Add configurable WeChat merge windows and clean debug logs

Remove redundant serde defaults from optional fields
fix: remove logs
2026-08-25 14:53:34 +00:00 · 2026-03-27 19:04:15 +08:00 · 2026-03-27 15:28:41 +08:00 · 2026-03-27 15:19:27 +08:00 · 2026-03-27 15:10:59 +08:00 · 2026-03-27 14:47:11 +08:00
38 changed files with 6123 additions and 224 deletions
@@ -121,6 +121,15 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4b46cbb362ab8752921c97e041f5e366ee6297bd428a31275b9fcf1e380f7299"

+[[package]]
+name = "ansi_term"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.21"
@@ -157,7 +166,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -168,7 +177,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
 "anstyle",
 "once_cell_polyfill",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -392,6 +401,17 @@ version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1505bd5d3d116872e7271a6d4e16d81d0c8570876c8de68093a09ac269d8aac0"

+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi 0.1.19",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.5.0"
@@ -941,6 +961,29 @@ dependencies = [
 "serde",
 ]

+[[package]]
+name = "bindgen"
+version = "0.59.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bd2a9a458e8f4304c52c43ebb0cfbd520289f8379a52e329a38afda99bf8eb8"
+dependencies = [
+ "bitflags 1.3.2",
+ "cexpr",
+ "clang-sys",
+ "clap 2.34.0",
+ "env_logger",
+ "lazy_static",
+ "lazycell",
+ "log",
+ "peeking_take_while",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash 1.1.0",
+ "shlex",
+ "which",
+]
+
 [[package]]
 name = "bindgen"
 version = "0.66.1"
@@ -1360,6 +1403,21 @@ dependencies = [
 "libloading",
 ]

+[[package]]
+name = "clap"
+version = "2.34.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0610544180c38b88101fecf2dd634b174a62eef6946f84dfc6a7127512b381c"
+dependencies = [
+ "ansi_term",
+ "atty",
+ "bitflags 1.3.2",
+ "strsim 0.8.0",
+ "textwrap",
+ "unicode-width 0.1.14",
+ "vec_map",
+]
+
 [[package]]
 name = "clap"
 version = "4.5.60"
@@ -1379,7 +1437,7 @@ dependencies = [
 "anstream",
 "anstyle",
 "clap_lex",
- "strsim",
+ "strsim 0.11.1",
 ]

 [[package]]
@@ -1388,7 +1446,7 @@ version = "4.5.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c757a3b7e39161a4e56f9365141ada2a6c915a8622c408ab6bb4b5d047371031"
 dependencies = [
- "clap",
+ "clap 4.5.60",
 ]

 [[package]]
@@ -1697,7 +1755,7 @@ dependencies = [
 "anes",
 "cast",
 "ciborium",
- "clap",
+ "clap 4.5.60",
 "criterion-plot",
 "is-terminal",
 "itertools 0.10.5",
@@ -1940,7 +1998,7 @@ dependencies = [
 "ident_case",
 "proc-macro2",
 "quote",
- "strsim",
+ "strsim 0.11.1",
 "syn 2.0.117",
 ]

@@ -2136,7 +2194,7 @@ dependencies = [
 "libc",
 "option-ext",
 "redox_users 0.5.2",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -2310,6 +2368,19 @@ dependencies = [
 "syn 2.0.117",
 ]

+[[package]]
+name = "env_logger"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a12e6657c4c97ebab115a42dcee77225f7f482cdd841cf7088c657a42e9e00e7"
+dependencies = [
+ "atty",
+ "humantime",
+ "log",
+ "regex",
+ "termcolor",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -2323,7 +2394,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
 "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -2848,6 +2919,15 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"

+[[package]]
+name = "hermit-abi"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.5.2"
@@ -3008,6 +3088,12 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"

+[[package]]
+name = "humantime"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "135b12329e5e3ce057a9f972339ea52bc954fe1e9358ef27f95e89716fbc5424"
+
 [[package]]
 name = "hyper"
 version = "0.14.32"
@@ -3150,7 +3236,7 @@ dependencies = [
 "libc",
 "percent-encoding",
 "pin-project-lite",
- "socket2 0.5.10",
+ "socket2 0.6.3",
 "system-configuration",
 "tokio",
 "tower-service",
@@ -3392,6 +3478,7 @@ dependencies = [
 name = "ironclaw"
 version = "0.22.0"
 dependencies = [
+ "aes",
 "aes-gcm",
 "aho-corasick",
 "anyhow",
@@ -3406,7 +3493,7 @@ dependencies = [
 "bytes",
 "chrono",
 "chrono-tz",
- "clap",
+ "clap 4.5.60",
 "clap_complete",
 "criterion",
 "cron",
@@ -3458,6 +3545,7 @@ dependencies = [
 "serde_json",
 "serde_yml",
 "sha2",
+ "silk-rs",
 "subtle",
 "tar",
 "tempfile",
@@ -3521,9 +3609,9 @@ version = "0.4.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3640c1c38b8e4e43584d8df18be5fc6b0aa314ce6ebf51b53313d4306cca8e46"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.5.2",
 "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -3757,7 +3845,7 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f2a50a585a1184a43621a9133b7702ba5cb7a87ca5e704056b19d8005de6faf"
 dependencies = [
- "bindgen",
+ "bindgen 0.66.1",
 "cc",
 ]

@@ -4143,7 +4231,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -4231,7 +4319,7 @@ version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91df4bbde75afed763b708b7eee1e8e7651e02d97f6d5dd763e89367e957b23b"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.5.2",
 "libc",
 ]

@@ -4709,7 +4797,7 @@ checksum = "5d0e4f59085d47d8241c88ead0f274e8a0cb551f3625263c05eb8dd897c34218"
 dependencies = [
 "cfg-if",
 "concurrent-queue",
- "hermit-abi",
+ "hermit-abi 0.5.2",
 "pin-project-lite",
 "rustix 1.1.4",
 "windows-sys 0.61.2",
@@ -4929,7 +5017,7 @@ dependencies = [
 "quinn-udp",
 "rustc-hash 2.1.1",
 "rustls 0.23.37",
- "socket2 0.5.10",
+ "socket2 0.6.3",
 "thiserror 2.0.18",
 "tokio",
 "tracing",
@@ -4966,9 +5054,9 @@ dependencies = [
 "cfg_aliases",
 "libc",
 "once_cell",
- "socket2 0.5.10",
+ "socket2 0.6.3",
 "tracing",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
 ]

 [[package]]
@@ -5481,7 +5569,7 @@ dependencies = [
 "errno",
 "libc",
 "linux-raw-sys 0.12.1",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -6107,6 +6195,18 @@ dependencies = [
 "rand_core 0.6.4",
 ]

+[[package]]
+name = "silk-rs"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "014e6619f35a385ff848570e73a0b8c36b31031e0ee11cac70192b50097b1cfe"
+dependencies = [
+ "bindgen 0.59.2",
+ "bytes",
+ "cc",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "simd-adler32"
 version = "0.3.8"
@@ -6163,7 +6263,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a766e1110788c36f4fa1c2b71b387a7815aa65f88ce0229841826633d93723e"
 dependencies = [
 "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -6235,6 +6335,12 @@ dependencies = [
 "unicode-properties",
 ]

+[[package]]
+name = "strsim"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -6388,7 +6494,7 @@ dependencies = [
 "getrandom 0.4.2",
 "once_cell",
 "rustix 1.1.4",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -6475,6 +6581,15 @@ dependencies = [
 "testcontainers",
 ]

+[[package]]
+name = "textwrap"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+dependencies = [
+ "unicode-width 0.1.14",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.69"
@@ -7188,7 +7303,7 @@ checksum = "f2f6fb2847f6742cd76af783a2a2c49e9375d0a111c7bef6f71cd9e738c72d6e"
 dependencies = [
 "memoffset",
 "tempfile",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -7341,6 +7456,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"

+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+
 [[package]]
 name = "version_check"
 version = "0.9.5"
@@ -8038,7 +8159,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.48.0",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -138,6 +138,7 @@ wasmtime-wasi = "28"  # WASI support for component model
 wasmparser = "0.220"  # WASM binary parsing for validation

 # Cryptography for secrets management
+aes = "0.8"
 aes-gcm = "0.10"
 hkdf = "0.12"
 hmac = "0.12"
@@ -174,6 +175,7 @@ base64 = "0.22.1"
 mime_guess = "2.0.5"
 clap_complete = "4.5.0"
 lru = "0.16.3"
+silk-rs = "0.2.0"

 # HTML to Markdown conversion (feature gated)
 html-to-markdown-rs = { version = "2.3", optional = true }
@@ -77,6 +77,7 @@ This document tracks feature parity between IronClaw (Rust implementation) and O
 | Linq | ✅ | ❌ | P3 | Real iMessage via API, no Mac required |
 | Feishu/Lark | ✅ | 🚧 | P3 | WASM channel with Event Subscription v2.0; Bitable/Docx tools planned |
 | LINE | ✅ | ❌ | P3 | |
+| WeChat (iLink bot) | ✅ | 🚧 | P2 | Extension-first channel (`channels-src/wechat`), single-account DM flow with QR login, typing, image send/receive, inbound file extraction, and inbound voice handling with SILK-to-WAV fallback; multi-account plus video and outbound file parity follow-up |
 | WebChat | ✅ | ✅ | - | Web gateway chat |
 | Matrix | ✅ | ❌ | P3 | E2EE support |
 | Mattermost | ✅ | ❌ | P3 | Emoji reactions, interactive buttons, model picker |
@@ -0,0 +1,2 @@
+/target
+/*.wasm
@@ -0,0 +1,568 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "aes"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b169f7a6d4742236a0a00c541b845991d0ac43e546831af1249753ab4c3aa3a0"
+dependencies = [
+ "cfg-if",
+ "cipher",
+ "cpufeatures",
+]
+
+[[package]]
+name = "ahash"
+version = "0.8.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a15f179cd60c4584b8a8c596927aadc462e27f2ca70c04e0071964a73ba7a75"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.102"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
+
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
+
+[[package]]
+name = "bitflags"
+version = "2.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
+
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
+[[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
+[[package]]
+name = "cipher"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
+dependencies = [
+ "crypto-common",
+ "inout",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+]
+
+[[package]]
+name = "equivalent"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+
+[[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "hashbrown"
+version = "0.14.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
+dependencies = [
+ "ahash",
+]
+
+[[package]]
+name = "hashbrown"
+version = "0.16.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
+
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
+[[package]]
+name = "id-arena"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
+
+[[package]]
+name = "indexmap"
+version = "2.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7714e70437a7dc3ac8eb7e6f8df75fd8eb422675fc7678aff7364301092b1017"
+dependencies = [
+ "equivalent",
+ "hashbrown 0.16.1",
+ "serde",
+ "serde_core",
+]
+
+[[package]]
+name = "inout"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "879f10e63c20629ecabbb64a8010319738c66a5cd0c29b02d63d272b03751d01"
+dependencies = [
+ "generic-array",
+]
+
+[[package]]
+name = "itoa"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
+
+[[package]]
+name = "leb128"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "884e2677b40cc8c339eaefcb701c32ef1fd2493d71118dc0ca4b6a736c93bd67"
+
+[[package]]
+name = "libc"
+version = "0.2.183"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"
+
+[[package]]
+name = "log"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
+
+[[package]]
+name = "md-5"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d89e7ee0cfbedfc4da3340218492196241d89eefb6dab27de5df917a6d2e78cf"
+dependencies = [
+ "cfg-if",
+ "digest",
+]
+
+[[package]]
+name = "memchr"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
+
+[[package]]
+name = "once_cell"
+version = "1.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
+[[package]]
+name = "prettyplease"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
+dependencies = [
+ "proc-macro2",
+ "syn",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "semver"
+version = "1.0.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
+[[package]]
+name = "serde"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "serde_json"
+version = "1.0.149"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
+dependencies = [
+ "itoa",
+ "memchr",
+ "serde",
+ "serde_core",
+ "zmij",
+]
+
+[[package]]
+name = "smallvec"
+version = "1.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
+
+[[package]]
+name = "spdx"
+version = "0.10.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3e17e880bafaeb362a7b751ec46bdc5b61445a188f80e0606e68167cd540fa3"
+dependencies = [
+ "smallvec",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.117"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "typenum"
+version = "1.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "562d481066bde0658276a35467c4af00bdc6ee726305698a55b86e61d7ad82bb"
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
+
+[[package]]
+name = "version_check"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
+
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
+[[package]]
+name = "wasm-encoder"
+version = "0.220.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e913f9242315ca39eff82aee0e19ee7a372155717ff0eb082c741e435ce25ed1"
+dependencies = [
+ "leb128",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasm-metadata"
+version = "0.220.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "185dfcd27fa5db2e6a23906b54c28199935f71d9a27a1a27b3a88d6fee2afae7"
+dependencies = [
+ "anyhow",
+ "indexmap",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "spdx",
+ "wasm-encoder",
+ "wasmparser",
+]
+
+[[package]]
+name = "wasmparser"
+version = "0.220.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8d07b6a3b550fefa1a914b6d54fc175dd11c3392da11eee604e6ffc759805d25"
+dependencies = [
+ "ahash",
+ "bitflags",
+ "hashbrown 0.14.5",
+ "indexmap",
+ "semver",
+]
+
+[[package]]
+name = "wechat-channel"
+version = "0.1.0"
+dependencies = [
+ "aes",
+ "base64",
+ "cipher",
+ "md-5",
+ "rand",
+ "serde",
+ "serde_json",
+ "wit-bindgen",
+]
+
+[[package]]
+name = "wit-bindgen"
+version = "0.36.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a2b3e15cd6068f233926e7d8c7c588b2ec4fb7cc7bf3824115e7c7e2a8485a3"
+dependencies = [
+ "wit-bindgen-rt",
+ "wit-bindgen-rust-macro",
+]
+
+[[package]]
+name = "wit-bindgen-core"
+version = "0.36.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b632a5a0fa2409489bd49c9e6d99fcc61bb3d4ce9d1907d44662e75a28c71172"
+dependencies = [
+ "anyhow",
+ "heck",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.36.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7947d0131c7c9da3f01dfde0ab8bd4c4cf3c5bd49b6dba0ae640f1fa752572ea"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "wit-bindgen-rust"
+version = "0.36.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4329de4186ee30e2ef30a0533f9b3c123c019a237a7c82d692807bf1b3ee2697"
+dependencies = [
+ "anyhow",
+ "heck",
+ "indexmap",
+ "prettyplease",
+ "syn",
+ "wasm-metadata",
+ "wit-bindgen-core",
+ "wit-component",
+]
+
+[[package]]
+name = "wit-bindgen-rust-macro"
+version = "0.36.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "177fb7ee1484d113b4792cc480b1ba57664bbc951b42a4beebe573502135b1fc"
+dependencies = [
+ "anyhow",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wit-bindgen-core",
+ "wit-bindgen-rust",
+]
+
+[[package]]
+name = "wit-component"
+version = "0.220.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b505603761ed400c90ed30261f44a768317348e49f1864e82ecdc3b2744e5627"
+dependencies = [
+ "anyhow",
+ "bitflags",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder",
+ "wasm-metadata",
+ "wasmparser",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-parser"
+version = "0.220.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae2a7999ed18efe59be8de2db9cb2b7f84d88b27818c79353dfc53131840fe1a"
+dependencies = [
+ "anyhow",
+ "id-arena",
+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "efbb2a062be311f2ba113ce66f697a4dc589f85e78a4aea276200804cea0ed87"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e8bc7269b54418e7aeeef514aa68f8690b8c0489a06b0136e5f57c4c5ccab89"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
@@ -0,0 +1,27 @@
+[package]
+name = "wechat-channel"
+version = "0.1.0"
+edition = "2021"
+description = "WeChat iLink Bot channel for IronClaw"
+license = "MIT OR Apache-2.0"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+wit-bindgen = "0.36"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+base64 = "0.22"
+aes = "0.8"
+cipher = "0.4"
+md-5 = "0.10"
+rand = "0.8"
+
+[profile.release]
+opt-level = "s"
+lto = true
+strip = true
+codegen-units = 1
+
+[workspace]
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(dirname "$0")"
+
+echo "Building WeChat channel WASM component..."
+
+cargo build --release --target wasm32-wasip2
+
+WASM_PATH="target/wasm32-wasip2/release/wechat_channel.wasm"
+
+if [ -f "$WASM_PATH" ]; then
+    if command -v wasm-tools >/dev/null 2>&1; then
+        wasm-tools component new "$WASM_PATH" -o wechat.wasm 2>/dev/null || cp "$WASM_PATH" wechat.wasm
+        wasm-tools strip wechat.wasm -o wechat.wasm
+    else
+        cp "$WASM_PATH" wechat.wasm
+        echo "wasm-tools not found; copied raw wasm output without component conversion/strip"
+    fi
+
+    echo "Built: wechat.wasm ($(du -h wechat.wasm | cut -f1))"
+    echo ""
+    echo "To install:"
+    echo "  mkdir -p ~/.ironclaw/channels"
+    echo "  cp wechat.wasm wechat.capabilities.json ~/.ironclaw/channels/"
+else
+    echo "Error: WASM output not found at $WASM_PATH"
+    exit 1
+fi
@@ -0,0 +1,277 @@
+use base64::Engine as _;
+
+use crate::near::agent::channel_host;
+use crate::types::{
+    BaseInfo, GetConfigRequest, GetConfigResponse, GetUpdatesRequest, GetUpdatesResponse,
+    GetUploadUrlRequest, GetUploadUrlResponse, MessageItem, OutboundWechatMessage,
+    SendMessageRequest, SendTypingRequest, SendTypingResponse, TextItem, WechatConfig,
+    MESSAGE_ITEM_TEXT, MESSAGE_STATE_FINISH, MESSAGE_TYPE_BOT,
+};
+
+pub fn base_info() -> BaseInfo {
+    BaseInfo {
+        channel_version: env!("CARGO_PKG_VERSION").to_string(),
+    }
+}
+
+fn ensure_trailing_slash(base_url: &str) -> String {
+    if base_url.ends_with('/') {
+        base_url.to_string()
+    } else {
+        format!("{base_url}/")
+    }
+}
+
+fn random_wechat_uin() -> String {
+    let seed = (channel_host::now_millis() % u32::MAX as u64) as u32;
+    base64::engine::general_purpose::STANDARD.encode(seed.to_string())
+}
+
+fn request_headers(body: &[u8]) -> String {
+    serde_json::json!({
+        "Content-Type": "application/json",
+        "AuthorizationType": "ilink_bot_token",
+        "Authorization": "Bearer {WECHAT_BOT_TOKEN}",
+        "Content-Length": body.len().to_string(),
+        "X-WECHAT-UIN": random_wechat_uin(),
+    })
+    .to_string()
+}
+
+fn summarize_body_preview(bytes: &[u8], limit: usize) -> String {
+    let preview = String::from_utf8_lossy(&bytes[..bytes.len().min(limit)]);
+    let normalized = preview.replace(['\n', '\r'], " ");
+    if bytes.len() > limit {
+        format!("{normalized}...")
+    } else {
+        normalized
+    }
+}
+
+pub fn get_updates(
+    config: &WechatConfig,
+    get_updates_buf: &str,
+) -> Result<GetUpdatesResponse, String> {
+    get_updates_with_timeout(config, get_updates_buf, config.long_poll_timeout_ms)
+}
+
+pub fn get_updates_with_timeout(
+    config: &WechatConfig,
+    get_updates_buf: &str,
+    timeout_ms: u32,
+) -> Result<GetUpdatesResponse, String> {
+    let body = serde_json::to_vec(&GetUpdatesRequest {
+        get_updates_buf: get_updates_buf.to_string(),
+        base_info: base_info(),
+    })
+    .map_err(|e| format!("Failed to encode getUpdates request: {e}"))?;
+    let headers = request_headers(&body);
+    let url = format!(
+        "{}ilink/bot/getupdates",
+        ensure_trailing_slash(&config.base_url)
+    );
+    channel_host::log(
+        channel_host::LogLevel::Info,
+        &format!(
+            "WeChat getUpdates request: cursor_len={} timeout_ms={}",
+            get_updates_buf.len(),
+            config.long_poll_timeout_ms
+        ),
+    );
+    let response =
+        channel_host::http_request("POST", &url, &headers, Some(&body), Some(timeout_ms))
+            .map_err(|e| format!("getUpdates request failed: {e}"))?;
+
+    channel_host::log(
+        channel_host::LogLevel::Info,
+        &format!(
+            "WeChat getUpdates response: status={} bytes={} has_image_marker={} has_aeskey_marker={} preview={}",
+            response.status,
+            response.body.len(),
+            response
+                .body
+                .windows(b"image_item".len())
+                .any(|window| window == b"image_item"),
+            response
+                .body
+                .windows(b"aeskey".len())
+                .any(|window| window == b"aeskey"),
+            summarize_body_preview(&response.body, 160)
+        ),
+    );
+
+    if response.status != 200 {
+        let body = String::from_utf8_lossy(&response.body);
+        return Err(format!("getUpdates returned {}: {}", response.status, body));
+    }
+
+    let parsed: GetUpdatesResponse = serde_json::from_slice(&response.body)
+        .map_err(|e| format!("Failed to parse getUpdates response: {e}"))?;
+    channel_host::log(
+        channel_host::LogLevel::Info,
+        &format!(
+            "WeChat getUpdates parsed: ret={:?} errcode={:?} msg_count={} next_cursor_len={}",
+            parsed.ret,
+            parsed.errcode,
+            parsed.msgs.len(),
+            parsed.get_updates_buf.as_deref().unwrap_or_default().len()
+        ),
+    );
+    Ok(parsed)
+}
+
+pub fn send_text_message(
+    config: &WechatConfig,
+    to_user_id: &str,
+    text: &str,
+    context_token: Option<&str>,
+) -> Result<(), String> {
+    let message = SendMessageRequest {
+        msg: OutboundWechatMessage {
+            from_user_id: String::new(),
+            to_user_id: to_user_id.to_string(),
+            client_id: format!("wechat-{}", channel_host::now_millis()),
+            message_type: MESSAGE_TYPE_BOT,
+            message_state: MESSAGE_STATE_FINISH,
+            item_list: vec![MessageItem {
+                r#type: Some(MESSAGE_ITEM_TEXT),
+                text_item: Some(TextItem {
+                    text: text.to_string(),
+                }),
+                image_item: None,
+                voice_item: None,
+                file_item: None,
+            }],
+            context_token: context_token.map(str::to_string),
+        },
+        base_info: base_info(),
+    };
+
+    send_message_request(config, &message)
+}
+
+pub fn send_message_request(
+    config: &WechatConfig,
+    message: &SendMessageRequest,
+) -> Result<(), String> {
+    let body = serde_json::to_vec(message)
+        .map_err(|e| format!("Failed to encode sendMessage request: {e}"))?;
+    let headers = request_headers(&body);
+    let url = format!(
+        "{}ilink/bot/sendmessage",
+        ensure_trailing_slash(&config.base_url)
+    );
+
+    let response = channel_host::http_request("POST", &url, &headers, Some(&body), Some(15_000))
+        .map_err(|e| format!("sendMessage request failed: {e}"))?;
+
+    if response.status != 200 {
+        let body = String::from_utf8_lossy(&response.body);
+        return Err(format!(
+            "sendMessage returned {}: {}",
+            response.status, body
+        ));
+    }
+
+    Ok(())
+}
+
+pub fn get_upload_url(
+    config: &WechatConfig,
+    request: &GetUploadUrlRequest,
+) -> Result<GetUploadUrlResponse, String> {
+    let body = serde_json::to_vec(request)
+        .map_err(|e| format!("Failed to encode getUploadUrl request: {e}"))?;
+    let headers = request_headers(&body);
+    let url = format!(
+        "{}ilink/bot/getuploadurl",
+        ensure_trailing_slash(&config.base_url)
+    );
+
+    let response = channel_host::http_request("POST", &url, &headers, Some(&body), Some(15_000))
+        .map_err(|e| format!("getUploadUrl request failed: {e}"))?;
+
+    if response.status != 200 {
+        let body = String::from_utf8_lossy(&response.body);
+        return Err(format!(
+            "getUploadUrl returned {}: {}",
+            response.status, body
+        ));
+    }
+
+    serde_json::from_slice(&response.body)
+        .map_err(|e| format!("Failed to parse getUploadUrl response: {e}"))
+}
+
+pub fn get_config(
+    config: &WechatConfig,
+    ilink_user_id: &str,
+    context_token: Option<&str>,
+) -> Result<GetConfigResponse, String> {
+    let body = serde_json::to_vec(&GetConfigRequest {
+        ilink_user_id: ilink_user_id.to_string(),
+        context_token: context_token.map(str::to_string),
+        base_info: base_info(),
+    })
+    .map_err(|e| format!("Failed to encode getConfig request: {e}"))?;
+    let headers = request_headers(&body);
+    let url = format!(
+        "{}ilink/bot/getconfig",
+        ensure_trailing_slash(&config.base_url)
+    );
+
+    let response = channel_host::http_request("POST", &url, &headers, Some(&body), Some(10_000))
+        .map_err(|e| format!("getConfig request failed: {e}"))?;
+
+    if response.status != 200 {
+        let body = String::from_utf8_lossy(&response.body);
+        return Err(format!("getConfig returned {}: {}", response.status, body));
+    }
+
+    serde_json::from_slice(&response.body)
+        .map_err(|e| format!("Failed to parse getConfig response: {e}"))
+}
+
+pub fn send_typing(
+    config: &WechatConfig,
+    ilink_user_id: &str,
+    typing_ticket: &str,
+    status: i32,
+) -> Result<(), String> {
+    let body = serde_json::to_vec(&SendTypingRequest {
+        ilink_user_id: ilink_user_id.to_string(),
+        typing_ticket: typing_ticket.to_string(),
+        status,
+        base_info: base_info(),
+    })
+    .map_err(|e| format!("Failed to encode sendTyping request: {e}"))?;
+    let headers = request_headers(&body);
+    let url = format!(
+        "{}ilink/bot/sendtyping",
+        ensure_trailing_slash(&config.base_url)
+    );
+
+    let response = channel_host::http_request("POST", &url, &headers, Some(&body), Some(10_000))
+        .map_err(|e| format!("sendTyping request failed: {e}"))?;
+
+    if response.status != 200 {
+        let body = String::from_utf8_lossy(&response.body);
+        return Err(format!("sendTyping returned {}: {}", response.status, body));
+    }
+
+    let parsed: SendTypingResponse = serde_json::from_slice(&response.body)
+        .map_err(|e| format!("Failed to parse sendTyping response: {e}"))?;
+
+    if parsed.ret.unwrap_or(0) != 0 {
+        let errmsg = parsed
+            .errmsg
+            .as_deref()
+            .unwrap_or("unknown WeChat sendTyping error");
+        return Err(format!(
+            "sendTyping returned ret={} errmsg={errmsg}",
+            parsed.ret.unwrap_or(-1)
+        ));
+    }
+
+    Ok(())
+}
@@ -0,0 +1,6 @@
+pub const TOKEN_SECRET_NAME: &str = "wechat_bot_token";
+pub const CONFIG_PATH: &str = "config.json";
+pub const GET_UPDATES_BUF_PATH: &str = "state/get_updates_buf.json";
+pub const CONTEXT_TOKENS_PATH: &str = "state/context_tokens.json";
+pub const TYPING_TICKETS_PATH: &str = "state/typing_tickets.json";
+pub const PENDING_INBOUND_PATH: &str = "state/pending_inbound.json";
@@ -0,0 +1,942 @@
+wit_bindgen::generate!({
+    world: "sandboxed-channel",
+    path: "../../wit/channel.wit",
+});
+
+mod api;
+mod auth;
+mod media;
+mod state;
+mod types;
+
+use exports::near::agent::channel::{
+    AgentResponse, ChannelConfig, Guest, PollConfig, StatusType, StatusUpdate,
+};
+use near::agent::channel_host::{self, EmittedMessage};
+use serde_json::json;
+
+use crate::auth::TOKEN_SECRET_NAME;
+use crate::state::{
+    load_config, load_context_tokens, load_get_updates_buf, load_pending_inbound_bundles,
+    load_typing_tickets, persist_config, persist_context_tokens, persist_get_updates_buf,
+    persist_pending_inbound_bundles, persist_typing_tickets, PendingInboundBundle,
+    StoredInboundAttachment, TypingTicketEntry,
+};
+use crate::types::{
+    OutboundMetadata, WechatConfig, WechatMessage, MESSAGE_ITEM_TEXT, MESSAGE_TYPE_USER,
+    TYPING_STATUS_CANCEL, TYPING_STATUS_TYPING,
+};
+
+const TYPING_TICKET_TTL_MS: u64 = 24 * 60 * 60 * 1000;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+enum WechatStatusAction {
+    Typing,
+    Cancel,
+}
+
+struct WechatChannel;
+
+impl Guest for WechatChannel {
+    fn on_start(config_json: String) -> Result<ChannelConfig, String> {
+        let config = serde_json::from_str::<WechatConfig>(&config_json)
+            .map_err(|e| format!("Failed to parse WeChat config: {e}"))?;
+        persist_config(&config)?;
+
+        Ok(ChannelConfig {
+            display_name: "WeChat".to_string(),
+            http_endpoints: Vec::new(),
+            poll: Some(PollConfig {
+                interval_ms: config.poll_interval_ms.max(30_000),
+                enabled: true,
+            }),
+        })
+    }
+
+    fn on_http_request(
+        _req: exports::near::agent::channel::IncomingHttpRequest,
+    ) -> exports::near::agent::channel::OutgoingHttpResponse {
+        exports::near::agent::channel::OutgoingHttpResponse {
+            status: 404,
+            headers_json: "{}".to_string(),
+            body: b"{\"error\":\"wechat channel does not expose webhooks\"}".to_vec(),
+        }
+    }
+
+    fn on_poll() {
+        if !channel_host::secret_exists(TOKEN_SECRET_NAME) {
+            channel_host::log(
+                channel_host::LogLevel::Warn,
+                "WeChat bot token is missing; skipping poll",
+            );
+            return;
+        }
+
+        let config = load_config();
+        let cursor = load_get_updates_buf();
+        let mut current_cursor = cursor.clone();
+        let mut context_tokens = load_context_tokens();
+        let mut pending_inbound = match load_pending_inbound_bundles() {
+            Ok(bundles) => bundles,
+            Err(error) => {
+                channel_host::log(
+                    channel_host::LogLevel::Error,
+                    &format!("Failed to load WeChat pending inbound bundles: {error}"),
+                );
+                return;
+            }
+        };
+        let mut pending_inbound_changed = false;
+
+        for bundle in take_due_pending_bundles(&mut pending_inbound, channel_host::now_millis()) {
+            pending_inbound_changed = true;
+            emit_buffered_bundle(bundle);
+        }
+
+        match api::get_updates(&config, &current_cursor) {
+            Ok(response) => {
+                if response.errcode == Some(-14) {
+                    channel_host::log(
+                        channel_host::LogLevel::Error,
+                        "WeChat getUpdates returned errcode=-14; reconnect the channel",
+                    );
+                    return;
+                }
+
+                if response.ret.unwrap_or(0) != 0 {
+                    let errmsg = response
+                        .errmsg
+                        .as_deref()
+                        .unwrap_or("unknown WeChat polling error");
+                    channel_host::log(
+                        channel_host::LogLevel::Warn,
+                        &format!(
+                            "WeChat getUpdates returned ret={} errmsg={errmsg}",
+                            response.ret.unwrap_or(-1)
+                        ),
+                    );
+                }
+
+                if let Some(next_cursor) = response.get_updates_buf.as_deref() {
+                    if next_cursor != current_cursor {
+                        current_cursor = next_cursor.to_string();
+                        if let Err(error) = persist_get_updates_buf(next_cursor) {
+                            channel_host::log(
+                                channel_host::LogLevel::Warn,
+                                &format!("Failed to persist WeChat polling cursor: {error}"),
+                            );
+                        }
+                    }
+                }
+
+                let mut context_tokens_changed = false;
+                for message in response.msgs {
+                    if let Some(from_user_id) = message.from_user_id.as_deref() {
+                        if let Some(context_token) = message.context_token.as_deref() {
+                            let changed = context_tokens
+                                .insert(from_user_id.to_string(), context_token.to_string())
+                                .as_deref()
+                                != Some(context_token);
+                            context_tokens_changed |= changed;
+                        }
+                    }
+                    match incoming_bundle_from_message(&config, message) {
+                        Ok(Some(bundle)) => {
+                            let emitted = process_incoming_bundle(
+                                &mut pending_inbound,
+                                bundle,
+                                &mut pending_inbound_changed,
+                                channel_host::now_millis(),
+                                u64::from(config.inbound_merge_window_ms),
+                            );
+                            for emitted_bundle in emitted {
+                                emit_buffered_bundle(emitted_bundle);
+                            }
+                        }
+                        Ok(None) => {}
+                        Err(error) => {
+                            channel_host::log(
+                                channel_host::LogLevel::Error,
+                                &format!("Failed to map WeChat inbound message: {error}"),
+                            );
+                        }
+                    }
+                }
+
+                collect_follow_up_bundles(
+                    &config,
+                    &mut current_cursor,
+                    &mut context_tokens,
+                    &mut context_tokens_changed,
+                    &mut pending_inbound,
+                    &mut pending_inbound_changed,
+                );
+
+                for bundle in
+                    take_due_pending_bundles(&mut pending_inbound, channel_host::now_millis())
+                {
+                    pending_inbound_changed = true;
+                    emit_buffered_bundle(bundle);
+                }
+
+                if context_tokens_changed {
+                    if let Err(error) = persist_context_tokens(&context_tokens) {
+                        channel_host::log(
+                            channel_host::LogLevel::Warn,
+                            &format!("Failed to persist WeChat context tokens: {error}"),
+                        );
+                    }
+                }
+
+                if pending_inbound_changed {
+                    if let Err(error) = persist_pending_inbound_bundles(&pending_inbound) {
+                        channel_host::log(
+                            channel_host::LogLevel::Warn,
+                            &format!("Failed to persist WeChat pending inbound bundles: {error}"),
+                        );
+                    }
+                }
+            }
+            Err(error) => {
+                channel_host::log(
+                    channel_host::LogLevel::Error,
+                    &format!("WeChat polling failed: {error}"),
+                );
+            }
+        }
+    }
+
+    fn on_respond(response: AgentResponse) -> Result<(), String> {
+        let metadata = serde_json::from_str::<OutboundMetadata>(&response.metadata_json)
+            .map_err(|e| format!("Invalid WeChat response metadata: {e}"))?;
+        let config = load_config();
+        let context_tokens = load_context_tokens();
+        let context_token = metadata
+            .context_token
+            .clone()
+            .or_else(|| context_tokens.get(&metadata.from_user_id).cloned());
+        if let Err(error) = send_typing_indicator(
+            &config,
+            &metadata,
+            context_token.as_deref(),
+            TYPING_STATUS_CANCEL,
+            false,
+        ) {
+            channel_host::log(
+                channel_host::LogLevel::Debug,
+                &format!("Failed to cancel WeChat typing indicator before reply: {error}"),
+            );
+        }
+
+        send_response(&config, &metadata, &response, context_token.as_deref())
+    }
+
+    fn on_status(update: StatusUpdate) {
+        let Some(action) = classify_status_update(&update) else {
+            return;
+        };
+        let metadata = match serde_json::from_str::<OutboundMetadata>(&update.metadata_json) {
+            Ok(metadata) => metadata,
+            Err(_) => {
+                channel_host::log(
+                    channel_host::LogLevel::Debug,
+                    "on_status: no valid WeChat metadata, skipping typing update",
+                );
+                return;
+            }
+        };
+        let config = load_config();
+        let context_tokens = load_context_tokens();
+        let context_token = resolve_context_token(&metadata, &context_tokens);
+
+        let (typing_status, allow_ticket_fetch) = match action {
+            WechatStatusAction::Typing => (TYPING_STATUS_TYPING, true),
+            WechatStatusAction::Cancel => (TYPING_STATUS_CANCEL, false),
+        };
+
+        if let Err(error) = send_typing_indicator(
+            &config,
+            &metadata,
+            context_token.as_deref(),
+            typing_status,
+            allow_ticket_fetch,
+        ) {
+            channel_host::log(
+                channel_host::LogLevel::Debug,
+                &format!("WeChat typing update failed: {error}"),
+            );
+        }
+    }
+
+    fn on_broadcast(_user_id: String, _response: AgentResponse) -> Result<(), String> {
+        Ok(())
+    }
+
+    fn on_shutdown() {}
+}
+
+fn incoming_bundle_from_message(
+    config: &WechatConfig,
+    message: WechatMessage,
+) -> Result<Option<PendingInboundBundle>, String> {
+    if message.message_type != Some(MESSAGE_TYPE_USER) {
+        return Ok(None);
+    }
+
+    let from_user_id = match message.from_user_id.as_deref() {
+        Some(user_id) => user_id,
+        None => return Ok(None),
+    };
+
+    let text = extract_text(&message);
+    let attachments = media::extract_inbound_attachments(config, &message)?
+        .into_iter()
+        .map(StoredInboundAttachment::from)
+        .collect::<Vec<_>>();
+    if text.trim().is_empty() && attachments.is_empty() {
+        return Ok(None);
+    }
+
+    Ok(Some(PendingInboundBundle {
+        from_user_id: from_user_id.to_string(),
+        to_user_id: message.to_user_id,
+        session_id: message.session_id,
+        context_token: message.context_token,
+        message_id: message.message_id,
+        flush_at_ms: 0,
+        text,
+        attachments,
+    }))
+}
+
+fn process_incoming_bundle(
+    pending_inbound: &mut std::collections::HashMap<String, PendingInboundBundle>,
+    mut bundle: PendingInboundBundle,
+    pending_inbound_changed: &mut bool,
+    now_ms: u64,
+    inbound_merge_window_ms: u64,
+) -> Vec<PendingInboundBundle> {
+    let key = bundle.from_user_id.clone();
+    let bundle_has_text = !bundle.text.trim().is_empty();
+    let bundle_has_attachments = !bundle.attachments.is_empty();
+
+    if let Some(mut pending) = pending_inbound.remove(&key) {
+        *pending_inbound_changed = true;
+
+        if bundle_has_text {
+            let incoming_metadata = bundle.clone();
+            pending.text = merge_text(&pending.text, &bundle.text);
+            pending.attachments.extend(bundle.attachments);
+            merge_bundle_metadata(&mut pending, &incoming_metadata);
+            return vec![pending];
+        }
+
+        let incoming_metadata = bundle.clone();
+        pending.attachments.extend(bundle.attachments);
+        merge_bundle_metadata(&mut pending, &incoming_metadata);
+        pending.flush_at_ms = next_flush_deadline(now_ms, inbound_merge_window_ms);
+        pending_inbound.insert(key, pending);
+        return Vec::new();
+    }
+
+    if bundle_has_attachments && !bundle_has_text {
+        *pending_inbound_changed = true;
+        bundle.flush_at_ms = next_flush_deadline(now_ms, inbound_merge_window_ms);
+        pending_inbound.insert(key, bundle);
+        Vec::new()
+    } else {
+        vec![bundle]
+    }
+}
+
+fn collect_follow_up_bundles(
+    config: &WechatConfig,
+    current_cursor: &mut String,
+    context_tokens: &mut std::collections::HashMap<String, String>,
+    context_tokens_changed: &mut bool,
+    pending_inbound: &mut std::collections::HashMap<String, PendingInboundBundle>,
+    pending_inbound_changed: &mut bool,
+) {
+    while !pending_inbound.is_empty() {
+        let now_ms = channel_host::now_millis();
+        let Some(timeout_ms) = next_follow_up_timeout_ms(pending_inbound, now_ms) else {
+            break;
+        };
+        if timeout_ms == 0 {
+            break;
+        }
+
+        let timeout_ms_u32 = timeout_ms.min(u64::from(u32::MAX)) as u32;
+        let response = match api::get_updates_with_timeout(config, current_cursor, timeout_ms_u32) {
+            Ok(response) => response,
+            Err(_) => break,
+        };
+
+        if response.errcode == Some(-14) {
+            channel_host::log(
+                channel_host::LogLevel::Error,
+                "WeChat getUpdates returned errcode=-14 during follow-up merge window; reconnect the channel",
+            );
+            break;
+        }
+
+        if response.ret.unwrap_or(0) != 0 {
+            let errmsg = response
+                .errmsg
+                .as_deref()
+                .unwrap_or("unknown WeChat polling error");
+            channel_host::log(
+                channel_host::LogLevel::Warn,
+                &format!(
+                    "WeChat getUpdates returned ret={} errmsg={errmsg} during follow-up merge window",
+                    response.ret.unwrap_or(-1)
+                ),
+            );
+        }
+
+        if let Some(next_cursor) = response.get_updates_buf.as_deref() {
+            if next_cursor != current_cursor {
+                *current_cursor = next_cursor.to_string();
+                if let Err(error) = persist_get_updates_buf(next_cursor) {
+                    channel_host::log(
+                        channel_host::LogLevel::Warn,
+                        &format!("Failed to persist WeChat polling cursor: {error}"),
+                    );
+                }
+            }
+        }
+
+        let mut saw_relevant_message = false;
+        for message in response.msgs {
+            if let Some(from_user_id) = message.from_user_id.as_deref() {
+                if let Some(context_token) = message.context_token.as_deref() {
+                    let changed = context_tokens
+                        .insert(from_user_id.to_string(), context_token.to_string())
+                        .as_deref()
+                        != Some(context_token);
+                    *context_tokens_changed |= changed;
+                }
+            }
+            match incoming_bundle_from_message(config, message) {
+                Ok(Some(bundle)) => {
+                    let emitted = process_incoming_bundle(
+                        pending_inbound,
+                        bundle,
+                        pending_inbound_changed,
+                        channel_host::now_millis(),
+                        u64::from(config.inbound_merge_window_ms),
+                    );
+                    for emitted_bundle in emitted {
+                        saw_relevant_message = true;
+                        emit_buffered_bundle(emitted_bundle);
+                    }
+                }
+                Ok(None) => {}
+                Err(error) => {
+                    channel_host::log(
+                        channel_host::LogLevel::Error,
+                        &format!("Failed to map WeChat inbound message: {error}"),
+                    );
+                }
+            }
+        }
+
+        if !saw_relevant_message && pending_inbound.is_empty() {
+            break;
+        }
+    }
+}
+
+fn next_flush_deadline(now_ms: u64, inbound_merge_window_ms: u64) -> u64 {
+    now_ms.saturating_add(inbound_merge_window_ms)
+}
+
+fn next_follow_up_timeout_ms(
+    pending_inbound: &std::collections::HashMap<String, PendingInboundBundle>,
+    now_ms: u64,
+) -> Option<u64> {
+    pending_inbound
+        .values()
+        .map(|bundle| bundle.flush_at_ms.saturating_sub(now_ms))
+        .min()
+}
+
+fn take_due_pending_bundles(
+    pending_inbound: &mut std::collections::HashMap<String, PendingInboundBundle>,
+    now_ms: u64,
+) -> Vec<PendingInboundBundle> {
+    let due_keys = pending_inbound
+        .iter()
+        .filter_map(|(key, bundle)| (bundle.flush_at_ms <= now_ms).then_some(key.clone()))
+        .collect::<Vec<_>>();
+
+    due_keys
+        .into_iter()
+        .filter_map(|key| pending_inbound.remove(&key))
+        .collect()
+}
+
+fn emit_buffered_bundle(bundle: PendingInboundBundle) {
+    let metadata = json!({
+        "from_user_id": bundle.from_user_id,
+        "to_user_id": bundle.to_user_id,
+        "message_id": bundle.message_id,
+        "session_id": bundle.session_id,
+        "context_token": bundle.context_token,
+    });
+
+    channel_host::emit_message(&EmittedMessage {
+        user_id: bundle.from_user_id.clone(),
+        user_name: None,
+        content: bundle.text,
+        thread_id: Some(format!("wechat:{}", bundle.from_user_id)),
+        metadata_json: metadata.to_string(),
+        attachments: bundle.attachments.into_iter().map(Into::into).collect(),
+    });
+}
+
+fn merge_bundle_metadata(target: &mut PendingInboundBundle, incoming: &PendingInboundBundle) {
+    if incoming.to_user_id.is_some() {
+        target.to_user_id = incoming.to_user_id.clone();
+    }
+    if incoming.session_id.is_some() {
+        target.session_id = incoming.session_id.clone();
+    }
+    if incoming.context_token.is_some() {
+        target.context_token = incoming.context_token.clone();
+    }
+    if incoming.message_id.is_some() {
+        target.message_id = incoming.message_id;
+    }
+}
+
+fn merge_text(existing: &str, incoming: &str) -> String {
+    let existing = existing.trim();
+    let incoming = incoming.trim();
+    match (existing.is_empty(), incoming.is_empty()) {
+        (true, true) => String::new(),
+        (true, false) => incoming.to_string(),
+        (false, true) => existing.to_string(),
+        (false, false) => format!("{existing}\n\n{incoming}"),
+    }
+}
+
+fn send_response(
+    config: &WechatConfig,
+    metadata: &OutboundMetadata,
+    response: &AgentResponse,
+    context_token: Option<&str>,
+) -> Result<(), String> {
+    let mut remaining_text = response.content.trim().to_string();
+    let mut sent_attachment = false;
+
+    for attachment in &response.attachments {
+        if !attachment.mime_type.starts_with("image/") {
+            return Err(format!(
+                "WeChat currently supports image attachments only, got {} ({})",
+                attachment.filename, attachment.mime_type
+            ));
+        }
+
+        let caption = if sent_attachment {
+            ""
+        } else {
+            remaining_text.as_str()
+        };
+        media::send_image_attachment(
+            config,
+            &metadata.from_user_id,
+            attachment,
+            context_token,
+            caption,
+        )?;
+        sent_attachment = true;
+        remaining_text.clear();
+    }
+
+    if !remaining_text.is_empty() || !sent_attachment {
+        api::send_text_message(
+            config,
+            &metadata.from_user_id,
+            &remaining_text,
+            context_token,
+        )?;
+    }
+
+    Ok(())
+}
+
+fn extract_text(message: &WechatMessage) -> String {
+    message
+        .item_list
+        .iter()
+        .find_map(|item| {
+            if item.r#type == Some(MESSAGE_ITEM_TEXT) {
+                item.text_item.as_ref().map(|item| item.text.clone())
+            } else if item.r#type == Some(crate::types::MESSAGE_ITEM_VOICE) {
+                item.voice_item
+                    .as_ref()
+                    .and_then(|item| item.text.as_ref())
+                    .cloned()
+            } else {
+                None
+            }
+        })
+        .unwrap_or_default()
+}
+
+fn is_terminal_text_status(message: &str) -> bool {
+    let trimmed = message.trim();
+    trimmed.eq_ignore_ascii_case("done")
+        || trimmed.eq_ignore_ascii_case("interrupted")
+        || trimmed.eq_ignore_ascii_case("awaiting approval")
+        || trimmed.eq_ignore_ascii_case("rejected")
+}
+
+fn classify_status_update(update: &StatusUpdate) -> Option<WechatStatusAction> {
+    match update.status {
+        StatusType::Thinking => Some(WechatStatusAction::Typing),
+        StatusType::Done
+        | StatusType::Interrupted
+        | StatusType::ApprovalNeeded
+        | StatusType::AuthRequired => Some(WechatStatusAction::Cancel),
+        StatusType::Status if is_terminal_text_status(&update.message) => {
+            Some(WechatStatusAction::Cancel)
+        }
+        StatusType::ToolStarted
+        | StatusType::ToolCompleted
+        | StatusType::ToolResult
+        | StatusType::Status
+        | StatusType::JobStarted
+        | StatusType::AuthCompleted => None,
+    }
+}
+
+fn resolve_context_token(
+    metadata: &OutboundMetadata,
+    context_tokens: &std::collections::HashMap<String, String>,
+) -> Option<String> {
+    metadata
+        .context_token
+        .clone()
+        .or_else(|| context_tokens.get(&metadata.from_user_id).cloned())
+}
+
+fn cached_typing_ticket(user_id: &str) -> Option<String> {
+    let tickets = load_typing_tickets();
+    let ticket = tickets.get(user_id)?;
+    let trimmed = ticket.ticket.trim();
+    if trimmed.is_empty() {
+        return None;
+    }
+
+    let age_ms = channel_host::now_millis().saturating_sub(ticket.fetched_at_ms);
+    if age_ms >= TYPING_TICKET_TTL_MS {
+        return None;
+    }
+
+    Some(trimmed.to_string())
+}
+
+fn persist_typing_ticket(user_id: &str, ticket: &str) -> Result<(), String> {
+    let mut tickets = load_typing_tickets();
+    tickets.insert(
+        user_id.to_string(),
+        TypingTicketEntry {
+            ticket: ticket.to_string(),
+            fetched_at_ms: channel_host::now_millis(),
+        },
+    );
+    persist_typing_tickets(&tickets)
+}
+
+fn clear_typing_ticket(user_id: &str) -> Result<(), String> {
+    let mut tickets = load_typing_tickets();
+    if tickets.remove(user_id).is_some() {
+        persist_typing_tickets(&tickets)?;
+    }
+    Ok(())
+}
+
+fn resolve_typing_ticket(
+    config: &WechatConfig,
+    user_id: &str,
+    context_token: Option<&str>,
+) -> Result<Option<String>, String> {
+    if let Some(ticket) = cached_typing_ticket(user_id) {
+        return Ok(Some(ticket));
+    }
+
+    let response = api::get_config(config, user_id, context_token)?;
+    if response.ret.unwrap_or(0) != 0 {
+        let errmsg = response
+            .errmsg
+            .as_deref()
+            .unwrap_or("unknown WeChat getConfig error");
+        return Err(format!(
+            "WeChat getConfig returned ret={} errmsg={errmsg}",
+            response.ret.unwrap_or(-1)
+        ));
+    }
+
+    let Some(ticket) = response
+        .typing_ticket
+        .as_deref()
+        .map(str::trim)
+        .filter(|ticket| !ticket.is_empty())
+    else {
+        return Ok(None);
+    };
+
+    if let Err(error) = persist_typing_ticket(user_id, ticket) {
+        channel_host::log(
+            channel_host::LogLevel::Warn,
+            &format!("Failed to persist WeChat typing ticket: {error}"),
+        );
+    }
+
+    Ok(Some(ticket.to_string()))
+}
+
+fn send_typing_indicator(
+    config: &WechatConfig,
+    metadata: &OutboundMetadata,
+    context_token: Option<&str>,
+    status: i32,
+    allow_ticket_fetch: bool,
+) -> Result<(), String> {
+    let ticket = if allow_ticket_fetch {
+        resolve_typing_ticket(config, &metadata.from_user_id, context_token)?
+    } else {
+        cached_typing_ticket(&metadata.from_user_id)
+    };
+
+    let Some(ticket) = ticket else {
+        return Ok(());
+    };
+
+    if let Err(error) = api::send_typing(config, &metadata.from_user_id, &ticket, status) {
+        let _ = clear_typing_ticket(&metadata.from_user_id);
+        return Err(error);
+    }
+
+    Ok(())
+}
+
+export!(WechatChannel);
+
+#[cfg(test)]
+mod tests {
+    use std::collections::HashMap;
+
+    use super::{
+        classify_status_update, extract_text, merge_text, process_incoming_bundle,
+        take_due_pending_bundles, PendingInboundBundle, StoredInboundAttachment,
+        WechatStatusAction,
+    };
+    use crate::exports::near::agent::channel::{StatusType, StatusUpdate};
+    use crate::types::{MessageItem, VoiceItem, WechatMessage, MESSAGE_ITEM_VOICE};
+
+    fn make_bundle(user_id: &str, text: &str, image_count: usize) -> PendingInboundBundle {
+        PendingInboundBundle {
+            from_user_id: user_id.to_string(),
+            to_user_id: Some("bot".to_string()),
+            session_id: Some("session-1".to_string()),
+            context_token: Some("ctx-1".to_string()),
+            message_id: Some(1),
+            flush_at_ms: 0,
+            text: text.to_string(),
+            attachments: (0..image_count)
+                .map(|index| StoredInboundAttachment {
+                    id: format!("att-{index}"),
+                    mime_type: "image/jpeg".to_string(),
+                    filename: Some(format!("photo-{index}.jpg")),
+                    size_bytes: Some(128),
+                    source_url: Some("https://example.com/image.jpg".to_string()),
+                    storage_key: None,
+                    extracted_text: None,
+                    extras_json: "{}".to_string(),
+                })
+                .collect(),
+        }
+    }
+
+    #[test]
+    fn test_classify_status_update_thinking_starts_typing() {
+        let update = StatusUpdate {
+            status: StatusType::Thinking,
+            message: "Thinking...".to_string(),
+            metadata_json: "{}".to_string(),
+        };
+
+        assert_eq!(
+            classify_status_update(&update),
+            Some(WechatStatusAction::Typing)
+        );
+    }
+
+    #[test]
+    fn test_classify_status_update_done_cancels_typing() {
+        let update = StatusUpdate {
+            status: StatusType::Done,
+            message: "Done".to_string(),
+            metadata_json: "{}".to_string(),
+        };
+
+        assert_eq!(
+            classify_status_update(&update),
+            Some(WechatStatusAction::Cancel)
+        );
+    }
+
+    #[test]
+    fn test_classify_status_update_approval_needed_cancels_typing() {
+        let update = StatusUpdate {
+            status: StatusType::ApprovalNeeded,
+            message: "Approval needed".to_string(),
+            metadata_json: "{}".to_string(),
+        };
+
+        assert_eq!(
+            classify_status_update(&update),
+            Some(WechatStatusAction::Cancel)
+        );
+    }
+
+    #[test]
+    fn test_classify_status_update_tool_started_is_ignored() {
+        let update = StatusUpdate {
+            status: StatusType::ToolStarted,
+            message: "Tool started".to_string(),
+            metadata_json: "{}".to_string(),
+        };
+
+        assert_eq!(classify_status_update(&update), None);
+    }
+
+    #[test]
+    fn test_classify_status_update_terminal_text_status_cancels_typing() {
+        let update = StatusUpdate {
+            status: StatusType::Status,
+            message: "Awaiting approval".to_string(),
+            metadata_json: "{}".to_string(),
+        };
+
+        assert_eq!(
+            classify_status_update(&update),
+            Some(WechatStatusAction::Cancel)
+        );
+    }
+
+    #[test]
+    fn test_classify_status_update_progress_status_is_ignored() {
+        let update = StatusUpdate {
+            status: StatusType::Status,
+            message: "Context compaction started".to_string(),
+            metadata_json: "{}".to_string(),
+        };
+
+        assert_eq!(classify_status_update(&update), None);
+    }
+
+    #[test]
+    fn test_merge_text_joins_non_empty_segments() {
+        assert_eq!(merge_text("", "hello"), "hello");
+        assert_eq!(merge_text("look", "what is this"), "look\n\nwhat is this");
+        assert_eq!(merge_text("look", ""), "look");
+    }
+
+    #[test]
+    fn test_extract_text_uses_voice_transcript_when_present() {
+        let message = WechatMessage {
+            message_id: Some(1),
+            from_user_id: Some("user-1".to_string()),
+            to_user_id: Some("bot-1".to_string()),
+            session_id: None,
+            message_type: None,
+            context_token: None,
+            item_list: vec![MessageItem {
+                r#type: Some(MESSAGE_ITEM_VOICE),
+                text_item: None,
+                image_item: None,
+                voice_item: Some(VoiceItem {
+                    media: None,
+                    encode_type: Some(6),
+                    playtime: Some(1500),
+                    text: Some("voice transcript".to_string()),
+                }),
+                file_item: None,
+            }],
+        };
+
+        assert_eq!(extract_text(&message), "voice transcript");
+    }
+
+    #[test]
+    fn test_process_incoming_bundle_merges_buffered_image_with_follow_up_text() {
+        let mut pending = HashMap::new();
+        let mut changed = false;
+
+        let emitted = process_incoming_bundle(
+            &mut pending,
+            make_bundle("u1", "", 1),
+            &mut changed,
+            100,
+            5_000,
+        );
+        assert!(emitted.is_empty());
+        assert!(changed);
+        assert_eq!(pending.len(), 1);
+        assert_eq!(pending["u1"].flush_at_ms, 5100);
+
+        changed = false;
+        let emitted = process_incoming_bundle(
+            &mut pending,
+            make_bundle("u1", "What is in this image?", 0),
+            &mut changed,
+            200,
+            5_000,
+        );
+        assert!(changed);
+        assert!(pending.is_empty());
+        assert_eq!(emitted.len(), 1);
+        assert_eq!(emitted[0].text, "What is in this image?");
+        assert_eq!(emitted[0].attachments.len(), 1);
+    }
+
+    #[test]
+    fn test_process_incoming_bundle_emits_text_and_images_together_without_buffering() {
+        let mut pending = HashMap::new();
+        let mut changed = false;
+
+        let emitted = process_incoming_bundle(
+            &mut pending,
+            make_bundle("u1", "Look at this image", 1),
+            &mut changed,
+            100,
+            5_000,
+        );
+        assert!(!changed);
+        assert!(pending.is_empty());
+        assert_eq!(emitted.len(), 1);
+        assert_eq!(emitted[0].text, "Look at this image");
+        assert_eq!(emitted[0].attachments.len(), 1);
+    }
+
+    #[test]
+    fn test_take_due_pending_bundles_emits_only_expired_entries() {
+        let mut pending = HashMap::new();
+        let mut expired = make_bundle("u1", "", 1);
+        expired.flush_at_ms = 100;
+        let mut fresh = make_bundle("u2", "", 1);
+        fresh.flush_at_ms = 300;
+        pending.insert(expired.from_user_id.clone(), expired);
+        pending.insert(fresh.from_user_id.clone(), fresh);
+
+        let due = take_due_pending_bundles(&mut pending, 200);
+        assert_eq!(due.len(), 1);
+        assert_eq!(due[0].from_user_id, "u1");
+        assert_eq!(pending.len(), 1);
+        assert!(pending.contains_key("u2"));
+    }
+}
@@ -0,0 +1,718 @@
+use aes::cipher::{generic_array::GenericArray, BlockEncrypt, KeyInit};
+use aes::Aes128;
+use base64::Engine as _;
+use md5::{Digest, Md5};
+use rand::RngCore;
+use serde_json::json;
+
+use crate::exports::near::agent::channel::Attachment;
+use crate::near::agent::channel_host::{self, InboundAttachment};
+use crate::types::{
+    CdnMedia, FileItem, ImageItem, MessageItem, SendMessageRequest, WechatConfig,
+    MESSAGE_ITEM_FILE, MESSAGE_ITEM_IMAGE, MESSAGE_ITEM_VOICE, MESSAGE_STATE_FINISH,
+    MESSAGE_TYPE_BOT, UPLOAD_MEDIA_TYPE_IMAGE,
+};
+
+const AES_BLOCK_SIZE: usize = 16;
+
+#[derive(Debug, Clone)]
+pub struct UploadImage {
+    pub download_encrypted_query_param: String,
+    pub aes_key_base64: String,
+    pub file_size_ciphertext: u64,
+}
+
+pub fn extract_inbound_attachments(
+    config: &WechatConfig,
+    message: &crate::types::WechatMessage,
+) -> Result<Vec<InboundAttachment>, String> {
+    message
+        .item_list
+        .iter()
+        .enumerate()
+        .filter_map(|(index, item)| {
+            map_inbound_attachment(config, message, item, index).transpose()
+        })
+        .collect()
+}
+
+pub fn send_image_attachment(
+    config: &WechatConfig,
+    to_user_id: &str,
+    attachment: &Attachment,
+    context_token: Option<&str>,
+    text: &str,
+) -> Result<(), String> {
+    if attachment.data.is_empty() {
+        return Err(format!(
+            "WeChat image attachment '{}' has no data",
+            attachment.filename
+        ));
+    }
+
+    let upload = upload_image(config, to_user_id, attachment)?;
+    if !text.trim().is_empty() {
+        crate::api::send_text_message(config, to_user_id, text.trim(), context_token)?;
+    }
+    let request = SendMessageRequest {
+        msg: crate::types::OutboundWechatMessage {
+            from_user_id: String::new(),
+            to_user_id: to_user_id.to_string(),
+            client_id: format!("wechat-{}", channel_host::now_millis()),
+            message_type: MESSAGE_TYPE_BOT,
+            message_state: MESSAGE_STATE_FINISH,
+            item_list: vec![MessageItem {
+                r#type: Some(MESSAGE_ITEM_IMAGE),
+                text_item: None,
+                image_item: Some(ImageItem {
+                    media: Some(CdnMedia {
+                        encrypt_query_param: Some(upload.download_encrypted_query_param.clone()),
+                        aes_key: Some(upload.aes_key_base64.clone()),
+                        encrypt_type: Some(1),
+                    }),
+                    aeskey: None,
+                    mid_size: Some(upload.file_size_ciphertext),
+                }),
+                voice_item: None,
+                file_item: None,
+            }],
+            context_token: context_token.map(str::to_string),
+        },
+        base_info: crate::api::base_info(),
+    };
+
+    crate::api::send_message_request(config, &request)
+}
+
+fn map_inbound_attachment(
+    config: &WechatConfig,
+    message: &crate::types::WechatMessage,
+    item: &MessageItem,
+    index: usize,
+) -> Result<Option<InboundAttachment>, String> {
+    if item.r#type == Some(MESSAGE_ITEM_IMAGE) {
+        return map_image_attachment(config, message, item, index);
+    }
+    if item.r#type == Some(MESSAGE_ITEM_VOICE) {
+        return map_voice_attachment(config, message, item, index);
+    }
+    if item.r#type == Some(MESSAGE_ITEM_FILE) {
+        return map_file_attachment(config, message, item, index);
+    }
+    Ok(None)
+}
+
+fn map_image_attachment(
+    config: &WechatConfig,
+    message: &crate::types::WechatMessage,
+    item: &MessageItem,
+    index: usize,
+) -> Result<Option<InboundAttachment>, String> {
+    if item.r#type != Some(MESSAGE_ITEM_IMAGE) {
+        return Ok(None);
+    }
+
+    let image = item.image_item.as_ref().ok_or_else(|| {
+        format!(
+            "WeChat image message {:?} is missing image_item payload",
+            message.message_id
+        )
+    })?;
+    let media = image.media.as_ref().ok_or_else(|| {
+        format!(
+            "WeChat image message {:?} is missing media payload",
+            message.message_id
+        )
+    })?;
+    let encrypt_query_param = media.encrypt_query_param.as_deref().ok_or_else(|| {
+        format!(
+            "WeChat image message {:?} is missing encrypt_query_param",
+            message.message_id
+        )
+    })?;
+    let message_id = message
+        .message_id
+        .ok_or_else(|| "WeChat image message is missing message_id".to_string())?;
+    let aes_key = preferred_image_aes_key(image, media).map(str::to_string);
+
+    Ok(Some(InboundAttachment {
+        id: format!("wechat-image-{}-{}", message_id, index),
+        mime_type: "image/jpeg".to_string(),
+        filename: Some(format!("wechat-image-{}-{}.jpg", message_id, index)),
+        size_bytes: image.mid_size,
+        source_url: Some(build_cdn_download_url(
+            &config.cdn_base_url,
+            encrypt_query_param,
+        )),
+        storage_key: None,
+        extracted_text: None,
+        extras_json: json!({ "wechat_aes_key": aes_key }).to_string(),
+    }))
+}
+
+fn map_file_attachment(
+    config: &WechatConfig,
+    message: &crate::types::WechatMessage,
+    item: &MessageItem,
+    index: usize,
+) -> Result<Option<InboundAttachment>, String> {
+    if item.r#type != Some(MESSAGE_ITEM_FILE) {
+        return Ok(None);
+    }
+
+    let file = item.file_item.as_ref().ok_or_else(|| {
+        format!(
+            "WeChat file message {:?} is missing file_item payload",
+            message.message_id
+        )
+    })?;
+    let media = file.media.as_ref().ok_or_else(|| {
+        format!(
+            "WeChat file message {:?} is missing media payload",
+            message.message_id
+        )
+    })?;
+    let encrypt_query_param = media.encrypt_query_param.as_deref().ok_or_else(|| {
+        format!(
+            "WeChat file message {:?} is missing encrypt_query_param",
+            message.message_id
+        )
+    })?;
+    let aes_key = media
+        .aes_key
+        .as_deref()
+        .filter(|value| !value.trim().is_empty())
+        .ok_or_else(|| {
+            format!(
+                "WeChat file message {:?} is missing aes_key",
+                message.message_id
+            )
+        })?;
+    let message_id = message
+        .message_id
+        .ok_or_else(|| "WeChat file message is missing message_id".to_string())?;
+    let filename = inbound_file_name(file, message_id, index);
+    let size_bytes = file.len.as_deref().and_then(parse_file_size);
+
+    Ok(Some(InboundAttachment {
+        id: format!("wechat-file-{}-{}", message_id, index),
+        mime_type: infer_file_mime_type(&filename),
+        filename: Some(filename),
+        size_bytes,
+        source_url: Some(build_cdn_download_url(
+            &config.cdn_base_url,
+            encrypt_query_param,
+        )),
+        storage_key: None,
+        extracted_text: None,
+        extras_json: json!({ "wechat_aes_key": aes_key }).to_string(),
+    }))
+}
+
+fn map_voice_attachment(
+    config: &WechatConfig,
+    message: &crate::types::WechatMessage,
+    item: &MessageItem,
+    index: usize,
+) -> Result<Option<InboundAttachment>, String> {
+    if item.r#type != Some(MESSAGE_ITEM_VOICE) {
+        return Ok(None);
+    }
+
+    let voice = item.voice_item.as_ref().ok_or_else(|| {
+        format!(
+            "WeChat voice message {:?} is missing voice_item payload",
+            message.message_id
+        )
+    })?;
+    let media = voice.media.as_ref().ok_or_else(|| {
+        format!(
+            "WeChat voice message {:?} is missing media payload",
+            message.message_id
+        )
+    })?;
+    let encrypt_query_param = media.encrypt_query_param.as_deref().ok_or_else(|| {
+        format!(
+            "WeChat voice message {:?} is missing encrypt_query_param",
+            message.message_id
+        )
+    })?;
+    let aes_key = media
+        .aes_key
+        .as_deref()
+        .filter(|value| !value.trim().is_empty())
+        .ok_or_else(|| {
+            format!(
+                "WeChat voice message {:?} is missing aes_key",
+                message.message_id
+            )
+        })?;
+    let message_id = message
+        .message_id
+        .ok_or_else(|| "WeChat voice message is missing message_id".to_string())?;
+    let (mime_type, extension) = infer_voice_media_type(voice.encode_type);
+    let duration_secs = voice.playtime.map(|millis| (millis / 1000) as u32);
+
+    Ok(Some(InboundAttachment {
+        id: format!("wechat-voice-{}-{}", message_id, index),
+        mime_type: mime_type.to_string(),
+        filename: Some(format!(
+            "wechat-voice-{}-{}.{}",
+            message_id, index, extension
+        )),
+        size_bytes: None,
+        source_url: Some(build_cdn_download_url(
+            &config.cdn_base_url,
+            encrypt_query_param,
+        )),
+        storage_key: None,
+        extracted_text: voice
+            .text
+            .as_deref()
+            .map(str::trim)
+            .filter(|value| !value.is_empty())
+            .map(str::to_string),
+        extras_json: build_voice_extras_json(aes_key, duration_secs),
+    }))
+}
+
+fn preferred_image_aes_key<'a>(image: &'a ImageItem, media: &'a CdnMedia) -> Option<&'a str> {
+    image
+        .aeskey
+        .as_deref()
+        .filter(|value| !value.trim().is_empty())
+        .or_else(|| {
+            media
+                .aes_key
+                .as_deref()
+                .filter(|value| !value.trim().is_empty())
+        })
+}
+
+fn inbound_file_name(file: &FileItem, message_id: i64, index: usize) -> String {
+    file.file_name
+        .as_deref()
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(str::to_string)
+        .unwrap_or_else(|| format!("wechat-file-{}-{}.bin", message_id, index))
+}
+
+fn parse_file_size(raw: &str) -> Option<u64> {
+    raw.trim().parse::<u64>().ok()
+}
+
+fn infer_voice_media_type(encode_type: Option<i32>) -> (&'static str, &'static str) {
+    match encode_type {
+        Some(7) => ("audio/mpeg", "mp3"),
+        Some(8) => ("audio/ogg", "ogg"),
+        Some(5) => ("audio/amr", "amr"),
+        Some(6) => ("audio/silk", "silk"),
+        _ => ("audio/silk", "silk"),
+    }
+}
+
+fn build_voice_extras_json(aes_key: &str, duration_secs: Option<u32>) -> String {
+    let mut extras = serde_json::Map::new();
+    extras.insert("wechat_aes_key".to_string(), json!(aes_key));
+    if let Some(duration_secs) = duration_secs {
+        extras.insert("duration_secs".to_string(), json!(duration_secs));
+    }
+    serde_json::Value::Object(extras).to_string()
+}
+
+fn infer_file_mime_type(filename: &str) -> String {
+    let extension = filename
+        .rsplit_once('.')
+        .map(|(_, ext)| ext.trim().to_ascii_lowercase());
+
+    match extension.as_deref() {
+        Some("pdf") => "application/pdf",
+        Some("doc") => "application/msword",
+        Some("docx") => "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+        Some("xls") => "application/vnd.ms-excel",
+        Some("xlsx") => "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        Some("ppt") => "application/vnd.ms-powerpoint",
+        Some("pptx") => "application/vnd.openxmlformats-officedocument.presentationml.presentation",
+        Some("txt") => "text/plain",
+        Some("csv") => "text/csv",
+        Some("json") => "application/json",
+        Some("xml") => "application/xml",
+        Some("md") => "text/markdown",
+        Some("zip") => "application/zip",
+        Some("tar") => "application/x-tar",
+        Some("gz") => "application/gzip",
+        Some("mp3") => "audio/mpeg",
+        Some("ogg") => "audio/ogg",
+        Some("wav") => "audio/wav",
+        Some("mp4") => "video/mp4",
+        Some("mov") => "video/quicktime",
+        Some("webm") => "video/webm",
+        Some("mkv") => "video/x-matroska",
+        Some("avi") => "video/x-msvideo",
+        Some("png") => "image/png",
+        Some("jpg") | Some("jpeg") => "image/jpeg",
+        Some("gif") => "image/gif",
+        Some("webp") => "image/webp",
+        Some("bmp") => "image/bmp",
+        _ => "application/octet-stream",
+    }
+    .to_string()
+}
+
+fn upload_image(
+    config: &WechatConfig,
+    to_user_id: &str,
+    attachment: &Attachment,
+) -> Result<UploadImage, String> {
+    let plaintext = &attachment.data;
+    let raw_size = plaintext.len() as u64;
+    let raw_md5 = hex_lower(md5_bytes(plaintext));
+    let file_size_ciphertext = padded_size(raw_size);
+    let filekey = hex_lower(random_bytes(16)?);
+    let aes_key = random_bytes(16)?;
+    let aes_key_hex = hex_lower(aes_key.clone());
+
+    let upload_url = crate::api::get_upload_url(
+        config,
+        &crate::types::GetUploadUrlRequest {
+            filekey: filekey.clone(),
+            media_type: UPLOAD_MEDIA_TYPE_IMAGE,
+            to_user_id: to_user_id.to_string(),
+            rawsize: raw_size,
+            rawfilemd5: raw_md5,
+            filesize: file_size_ciphertext,
+            no_need_thumb: true,
+            aeskey: aes_key_hex,
+            base_info: crate::api::base_info(),
+        },
+    )?;
+
+    let upload_param = upload_url
+        .upload_param
+        .as_deref()
+        .filter(|value| !value.trim().is_empty())
+        .ok_or_else(|| "WeChat getUploadUrl returned no upload_param".to_string())?;
+
+    if upload_url.thumb_upload_param.is_some() {
+        channel_host::log(
+            channel_host::LogLevel::Debug,
+            "WeChat image upload returned thumb_upload_param; ignoring for single-image flow",
+        );
+    }
+
+    let ciphertext = encrypt_aes_ecb_pkcs7(plaintext, &aes_key)?;
+    let upload_response = channel_host::http_request(
+        "POST",
+        &build_cdn_upload_url(&config.cdn_base_url, upload_param, &filekey),
+        r#"{"Content-Type":"application/octet-stream"}"#,
+        Some(&ciphertext),
+        Some(15_000),
+    )
+    .map_err(|e| format!("WeChat CDN upload failed: {e}"))?;
+
+    if upload_response.status != 200 {
+        let body = String::from_utf8_lossy(&upload_response.body);
+        return Err(format!(
+            "WeChat CDN upload returned {}: {}",
+            upload_response.status, body
+        ));
+    }
+
+    let headers: std::collections::HashMap<String, String> =
+        serde_json::from_str(&upload_response.headers_json)
+            .map_err(|e| format!("Failed to parse WeChat CDN upload headers: {e}"))?;
+    let download_encrypted_query_param = headers
+        .iter()
+        .find_map(|(key, value)| {
+            if key.eq_ignore_ascii_case("x-encrypted-param") {
+                Some(value.clone())
+            } else {
+                None
+            }
+        })
+        .filter(|value| !value.trim().is_empty())
+        .ok_or_else(|| "WeChat CDN upload response missing x-encrypted-param".to_string())?;
+
+    Ok(UploadImage {
+        download_encrypted_query_param,
+        aes_key_base64: base64::engine::general_purpose::STANDARD.encode(aes_key),
+        file_size_ciphertext,
+    })
+}
+
+fn build_cdn_download_url(cdn_base_url: &str, encrypted_query_param: &str) -> String {
+    format!(
+        "{}/download?encrypted_query_param={}",
+        cdn_base_url.trim_end_matches('/'),
+        percent_encode(encrypted_query_param)
+    )
+}
+
+fn build_cdn_upload_url(cdn_base_url: &str, upload_param: &str, filekey: &str) -> String {
+    format!(
+        "{}/upload?encrypted_query_param={}&filekey={}",
+        cdn_base_url.trim_end_matches('/'),
+        percent_encode(upload_param),
+        percent_encode(filekey)
+    )
+}
+
+fn percent_encode(value: &str) -> String {
+    let mut encoded = String::with_capacity(value.len());
+    for byte in value.bytes() {
+        if byte.is_ascii_alphanumeric() || matches!(byte, b'-' | b'_' | b'.' | b'~') {
+            encoded.push(byte as char);
+        } else {
+            encoded.push('%');
+            encoded.push(nibble_to_hex(byte >> 4));
+            encoded.push(nibble_to_hex(byte & 0x0F));
+        }
+    }
+    encoded
+}
+
+fn nibble_to_hex(nibble: u8) -> char {
+    match nibble {
+        0..=9 => (b'0' + nibble) as char,
+        10..=15 => (b'A' + (nibble - 10)) as char,
+        _ => '0',
+    }
+}
+
+fn encode_hex(bytes: &[u8]) -> String {
+    let mut out = String::with_capacity(bytes.len() * 2);
+    for byte in bytes {
+        out.push(nibble_to_hex(byte >> 4));
+        out.push(nibble_to_hex(byte & 0x0F));
+    }
+    out
+}
+
+fn hex_lower(bytes: Vec<u8>) -> String {
+    encode_hex(&bytes).to_ascii_lowercase()
+}
+
+fn encrypt_aes_ecb_pkcs7(plaintext: &[u8], key: &[u8]) -> Result<Vec<u8>, String> {
+    let cipher = Aes128::new_from_slice(key).map_err(|e| format!("Invalid AES key: {e}"))?;
+    let mut padded = plaintext.to_vec();
+    let pad_len = AES_BLOCK_SIZE - (padded.len() % AES_BLOCK_SIZE);
+    padded.extend(std::iter::repeat_n(pad_len as u8, pad_len));
+
+    for chunk in padded.chunks_exact_mut(AES_BLOCK_SIZE) {
+        cipher.encrypt_block(GenericArray::from_mut_slice(chunk));
+    }
+
+    Ok(padded)
+}
+
+fn md5_bytes(bytes: &[u8]) -> Vec<u8> {
+    Md5::digest(bytes).to_vec()
+}
+
+fn random_bytes(len: usize) -> Result<Vec<u8>, String> {
+    let mut bytes = vec![0u8; len];
+    rand::rngs::OsRng.fill_bytes(&mut bytes);
+    if bytes.iter().all(|byte| *byte == 0) {
+        return Err("OS RNG returned all-zero bytes unexpectedly".to_string());
+    }
+    Ok(bytes)
+}
+
+fn padded_size(raw_size: u64) -> u64 {
+    ((raw_size / AES_BLOCK_SIZE as u64) + 1) * AES_BLOCK_SIZE as u64
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{
+        build_voice_extras_json, encode_hex, encrypt_aes_ecb_pkcs7, infer_file_mime_type,
+        infer_voice_media_type, map_file_attachment, map_image_attachment, map_voice_attachment,
+        AES_BLOCK_SIZE,
+    };
+    use crate::types::{
+        CdnMedia, FileItem, ImageItem, MessageItem, VoiceItem, WechatConfig, WechatMessage,
+        MESSAGE_ITEM_FILE, MESSAGE_ITEM_IMAGE, MESSAGE_ITEM_VOICE,
+    };
+
+    #[test]
+    fn test_encrypt_aes_ecb_pkcs7_is_block_aligned() {
+        let key = [0x11u8; 16];
+        let plaintext = b"wechat image payload".to_vec();
+        let ciphertext = encrypt_aes_ecb_pkcs7(&plaintext, &key).unwrap();
+        assert_eq!(ciphertext.len() % AES_BLOCK_SIZE, 0);
+        assert_ne!(ciphertext, plaintext);
+        assert_eq!(
+            encode_hex(&ciphertext).to_ascii_lowercase(),
+            "a7464c94a03fb2c5aa783597a1d2f5a461f1cd5d83a7bd92721e8ac1853f881f"
+        );
+    }
+
+    #[test]
+    fn test_map_image_attachment_errors_when_message_id_missing() {
+        let config = WechatConfig::default();
+        let message = WechatMessage {
+            message_id: None,
+            from_user_id: Some("user-1".to_string()),
+            to_user_id: Some("bot-1".to_string()),
+            session_id: None,
+            message_type: None,
+            context_token: None,
+            item_list: vec![MessageItem {
+                r#type: Some(MESSAGE_ITEM_IMAGE),
+                text_item: None,
+                image_item: Some(ImageItem {
+                    media: Some(CdnMedia {
+                        encrypt_query_param: Some("enc".to_string()),
+                        aes_key: Some("aes".to_string()),
+                        encrypt_type: Some(1),
+                    }),
+                    aeskey: None,
+                    mid_size: Some(128),
+                }),
+                voice_item: None,
+                file_item: None,
+            }],
+        };
+
+        let error = map_image_attachment(&config, &message, &message.item_list[0], 0)
+            .expect_err("missing message_id should error");
+        assert!(error.contains("missing message_id"));
+    }
+
+    #[test]
+    fn test_map_file_attachment_uses_filename_and_size_metadata() {
+        let config = WechatConfig::default();
+        let message = WechatMessage {
+            message_id: Some(42),
+            from_user_id: Some("user-1".to_string()),
+            to_user_id: Some("bot-1".to_string()),
+            session_id: None,
+            message_type: None,
+            context_token: None,
+            item_list: vec![MessageItem {
+                r#type: Some(MESSAGE_ITEM_FILE),
+                text_item: None,
+                image_item: None,
+                voice_item: None,
+                file_item: Some(FileItem {
+                    media: Some(CdnMedia {
+                        encrypt_query_param: Some("enc".to_string()),
+                        aes_key: Some("YWJjZGVmZ2hpamtsbW5vcA==".to_string()),
+                        encrypt_type: Some(1),
+                    }),
+                    file_name: Some("report.PDF".to_string()),
+                    len: Some("256".to_string()),
+                }),
+            }],
+        };
+
+        let attachment = map_file_attachment(&config, &message, &message.item_list[0], 0)
+            .expect("file attachment should map")
+            .expect("file attachment should be present");
+        assert_eq!(attachment.id, "wechat-file-42-0");
+        assert_eq!(attachment.mime_type, "application/pdf");
+        assert_eq!(attachment.filename.as_deref(), Some("report.PDF"));
+        assert_eq!(attachment.size_bytes, Some(256));
+        assert!(attachment.extras_json.contains("wechat_aes_key"));
+    }
+
+    #[test]
+    fn test_map_file_attachment_errors_when_message_id_missing() {
+        let config = WechatConfig::default();
+        let message = WechatMessage {
+            message_id: None,
+            from_user_id: Some("user-1".to_string()),
+            to_user_id: Some("bot-1".to_string()),
+            session_id: None,
+            message_type: None,
+            context_token: None,
+            item_list: vec![MessageItem {
+                r#type: Some(MESSAGE_ITEM_FILE),
+                text_item: None,
+                image_item: None,
+                voice_item: None,
+                file_item: Some(FileItem {
+                    media: Some(CdnMedia {
+                        encrypt_query_param: Some("enc".to_string()),
+                        aes_key: Some("aes".to_string()),
+                        encrypt_type: Some(1),
+                    }),
+                    file_name: Some("report.pdf".to_string()),
+                    len: Some("256".to_string()),
+                }),
+            }],
+        };
+
+        let error = map_file_attachment(&config, &message, &message.item_list[0], 0)
+            .expect_err("missing message_id should error");
+        assert!(error.contains("missing message_id"));
+    }
+
+    #[test]
+    fn test_infer_file_mime_type_defaults_to_octet_stream() {
+        assert_eq!(
+            infer_file_mime_type("archive.unknown"),
+            "application/octet-stream"
+        );
+        assert_eq!(infer_file_mime_type("README"), "application/octet-stream");
+    }
+
+    #[test]
+    fn test_infer_voice_media_type_defaults_to_silk() {
+        assert_eq!(infer_voice_media_type(Some(6)), ("audio/silk", "silk"));
+        assert_eq!(infer_voice_media_type(Some(8)), ("audio/ogg", "ogg"));
+        assert_eq!(infer_voice_media_type(None), ("audio/silk", "silk"));
+    }
+
+    #[test]
+    fn test_build_voice_extras_json_includes_duration() {
+        let extras = build_voice_extras_json("aes-key", Some(9));
+        assert!(extras.contains("wechat_aes_key"));
+        assert!(extras.contains("duration_secs"));
+    }
+
+    #[test]
+    fn test_map_voice_attachment_sets_audio_metadata() {
+        let config = WechatConfig::default();
+        let message = WechatMessage {
+            message_id: Some(77),
+            from_user_id: Some("user-1".to_string()),
+            to_user_id: Some("bot-1".to_string()),
+            session_id: None,
+            message_type: None,
+            context_token: None,
+            item_list: vec![MessageItem {
+                r#type: Some(MESSAGE_ITEM_VOICE),
+                text_item: None,
+                image_item: None,
+                voice_item: Some(VoiceItem {
+                    media: Some(CdnMedia {
+                        encrypt_query_param: Some("enc".to_string()),
+                        aes_key: Some("YWJjZGVmZ2hpamtsbW5vcA==".to_string()),
+                        encrypt_type: Some(1),
+                    }),
+                    encode_type: Some(8),
+                    playtime: Some(4200),
+                    text: Some("hello from voice".to_string()),
+                }),
+                file_item: None,
+            }],
+        };
+
+        let attachment = map_voice_attachment(&config, &message, &message.item_list[0], 0)
+            .expect("voice attachment should map")
+            .expect("voice attachment should be present");
+        assert_eq!(attachment.id, "wechat-voice-77-0");
+        assert_eq!(attachment.mime_type, "audio/ogg");
+        assert_eq!(
+            attachment.filename.as_deref(),
+            Some("wechat-voice-77-0.ogg")
+        );
+        assert_eq!(
+            attachment.extracted_text.as_deref(),
+            Some("hello from voice")
+        );
+        assert!(attachment.extras_json.contains("duration_secs"));
+    }
+}
@@ -0,0 +1,158 @@
+use std::collections::HashMap;
+
+use serde::{Deserialize, Serialize};
+
+use crate::auth::{
+    CONFIG_PATH, CONTEXT_TOKENS_PATH, GET_UPDATES_BUF_PATH, PENDING_INBOUND_PATH,
+    TYPING_TICKETS_PATH,
+};
+use crate::near::agent::channel_host;
+use crate::types::WechatConfig;
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct TypingTicketEntry {
+    pub ticket: String,
+    pub fetched_at_ms: u64,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, Eq)]
+pub struct StoredInboundAttachment {
+    pub id: String,
+    pub mime_type: String,
+    pub filename: Option<String>,
+    pub size_bytes: Option<u64>,
+    pub source_url: Option<String>,
+    pub storage_key: Option<String>,
+    pub extracted_text: Option<String>,
+    pub extras_json: String,
+}
+
+impl From<channel_host::InboundAttachment> for StoredInboundAttachment {
+    fn from(value: channel_host::InboundAttachment) -> Self {
+        Self {
+            id: value.id,
+            mime_type: value.mime_type,
+            filename: value.filename,
+            size_bytes: value.size_bytes,
+            source_url: value.source_url,
+            storage_key: value.storage_key,
+            extracted_text: value.extracted_text,
+            extras_json: value.extras_json,
+        }
+    }
+}
+
+impl From<StoredInboundAttachment> for channel_host::InboundAttachment {
+    fn from(value: StoredInboundAttachment) -> Self {
+        Self {
+            id: value.id,
+            mime_type: value.mime_type,
+            filename: value.filename,
+            size_bytes: value.size_bytes,
+            source_url: value.source_url,
+            storage_key: value.storage_key,
+            extracted_text: value.extracted_text,
+            extras_json: value.extras_json,
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, Eq)]
+pub struct PendingInboundBundle {
+    pub from_user_id: String,
+    pub to_user_id: Option<String>,
+    pub session_id: Option<String>,
+    pub context_token: Option<String>,
+    pub message_id: Option<i64>,
+    pub flush_at_ms: u64,
+    pub text: String,
+    pub attachments: Vec<StoredInboundAttachment>,
+}
+
+pub fn load_config() -> WechatConfig {
+    channel_host::workspace_read(CONFIG_PATH)
+        .and_then(|raw| serde_json::from_str::<WechatConfig>(&raw).ok())
+        .unwrap_or_default()
+}
+
+pub fn persist_config(config: &WechatConfig) -> Result<(), String> {
+    let serialized =
+        serde_json::to_string(config).map_err(|e| format!("Failed to serialize config: {e}"))?;
+    channel_host::workspace_write(CONFIG_PATH, &serialized).map_err(|e| e.to_string())
+}
+
+pub fn load_get_updates_buf() -> String {
+    channel_host::workspace_read(GET_UPDATES_BUF_PATH)
+        .and_then(|raw| serde_json::from_str::<String>(&raw).ok())
+        .unwrap_or_default()
+}
+
+pub fn persist_get_updates_buf(value: &str) -> Result<(), String> {
+    let serialized =
+        serde_json::to_string(value).map_err(|e| format!("Failed to serialize cursor: {e}"))?;
+    channel_host::workspace_write(GET_UPDATES_BUF_PATH, &serialized).map_err(|e| e.to_string())
+}
+
+pub fn load_context_tokens() -> HashMap<String, String> {
+    channel_host::workspace_read(CONTEXT_TOKENS_PATH)
+        .and_then(|raw| serde_json::from_str::<HashMap<String, String>>(&raw).ok())
+        .unwrap_or_default()
+}
+
+pub fn persist_context_tokens(tokens: &HashMap<String, String>) -> Result<(), String> {
+    let serialized =
+        serde_json::to_string(tokens).map_err(|e| format!("Failed to serialize tokens: {e}"))?;
+    channel_host::workspace_write(CONTEXT_TOKENS_PATH, &serialized).map_err(|e| e.to_string())
+}
+
+pub fn load_typing_tickets() -> HashMap<String, TypingTicketEntry> {
+    channel_host::workspace_read(TYPING_TICKETS_PATH)
+        .and_then(|raw| serde_json::from_str::<HashMap<String, TypingTicketEntry>>(&raw).ok())
+        .unwrap_or_default()
+}
+
+pub fn persist_typing_tickets(tickets: &HashMap<String, TypingTicketEntry>) -> Result<(), String> {
+    let serialized =
+        serde_json::to_string(tickets).map_err(|e| format!("Failed to serialize tickets: {e}"))?;
+    channel_host::workspace_write(TYPING_TICKETS_PATH, &serialized).map_err(|e| e.to_string())
+}
+
+pub fn load_pending_inbound_bundles() -> Result<HashMap<String, PendingInboundBundle>, String> {
+    parse_pending_inbound_bundles(channel_host::workspace_read(PENDING_INBOUND_PATH).as_deref())
+}
+
+pub fn persist_pending_inbound_bundles(
+    bundles: &HashMap<String, PendingInboundBundle>,
+) -> Result<(), String> {
+    let serialized =
+        serde_json::to_string(bundles).map_err(|e| format!("Failed to serialize bundles: {e}"))?;
+    channel_host::workspace_write(PENDING_INBOUND_PATH, &serialized).map_err(|e| e.to_string())
+}
+
+fn parse_pending_inbound_bundles(
+    raw: Option<&str>,
+) -> Result<HashMap<String, PendingInboundBundle>, String> {
+    match raw {
+        None => Ok(HashMap::new()),
+        Some(raw) => serde_json::from_str(raw)
+            .map_err(|e| format!("Failed to parse pending inbound bundles: {e}")),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_parse_pending_inbound_bundles_missing_file_returns_empty_map() {
+        let bundles = parse_pending_inbound_bundles(None).expect("missing state should be empty");
+        assert!(bundles.is_empty());
+    }
+
+    #[test]
+    fn test_parse_pending_inbound_bundles_invalid_json_returns_error() {
+        let error =
+            parse_pending_inbound_bundles(Some("{not json")).expect_err("invalid json should err");
+        assert!(error.contains("Failed to parse pending inbound bundles"));
+    }
+}
@@ -0,0 +1,216 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct WechatConfig {
+    #[serde(default = "default_base_url")]
+    pub base_url: String,
+    #[serde(default = "default_cdn_base_url")]
+    pub cdn_base_url: String,
+    #[serde(default = "default_bot_type")]
+    pub bot_type: String,
+    #[serde(default = "default_poll_interval_ms")]
+    pub poll_interval_ms: u32,
+    #[serde(default = "default_long_poll_timeout_ms")]
+    pub long_poll_timeout_ms: u32,
+    #[serde(default = "default_inbound_merge_window_ms")]
+    pub inbound_merge_window_ms: u32,
+}
+
+fn default_base_url() -> String {
+    "https://ilinkai.weixin.qq.com".to_string()
+}
+
+fn default_cdn_base_url() -> String {
+    "https://novac2c.cdn.weixin.qq.com/c2c".to_string()
+}
+
+fn default_bot_type() -> String {
+    "3".to_string()
+}
+
+fn default_poll_interval_ms() -> u32 {
+    30_000
+}
+
+fn default_long_poll_timeout_ms() -> u32 {
+    35_000
+}
+
+fn default_inbound_merge_window_ms() -> u32 {
+    5_000
+}
+
+impl Default for WechatConfig {
+    fn default() -> Self {
+        Self {
+            base_url: default_base_url(),
+            cdn_base_url: default_cdn_base_url(),
+            bot_type: default_bot_type(),
+            poll_interval_ms: default_poll_interval_ms(),
+            long_poll_timeout_ms: default_long_poll_timeout_ms(),
+            inbound_merge_window_ms: default_inbound_merge_window_ms(),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct BaseInfo {
+    pub channel_version: String,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct GetUploadUrlRequest {
+    pub filekey: String,
+    pub media_type: i32,
+    pub to_user_id: String,
+    pub rawsize: u64,
+    pub rawfilemd5: String,
+    pub filesize: u64,
+    pub no_need_thumb: bool,
+    pub aeskey: String,
+    pub base_info: BaseInfo,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct GetUpdatesRequest {
+    pub get_updates_buf: String,
+    pub base_info: BaseInfo,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct GetConfigRequest {
+    pub ilink_user_id: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub context_token: Option<String>,
+    pub base_info: BaseInfo,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct GetUpdatesResponse {
+    pub ret: Option<i32>,
+    pub errcode: Option<i32>,
+    pub errmsg: Option<String>,
+    #[serde(default)]
+    pub msgs: Vec<WechatMessage>,
+    pub get_updates_buf: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct GetUploadUrlResponse {
+    pub upload_param: Option<String>,
+    pub thumb_upload_param: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct SendMessageRequest {
+    pub msg: OutboundWechatMessage,
+    pub base_info: BaseInfo,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct SendTypingRequest {
+    pub ilink_user_id: String,
+    pub typing_ticket: String,
+    pub status: i32,
+    pub base_info: BaseInfo,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct OutboundWechatMessage {
+    pub from_user_id: String,
+    pub to_user_id: String,
+    pub client_id: String,
+    pub message_type: i32,
+    pub message_state: i32,
+    pub item_list: Vec<MessageItem>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub context_token: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct WechatMessage {
+    pub message_id: Option<i64>,
+    pub from_user_id: Option<String>,
+    pub to_user_id: Option<String>,
+    pub session_id: Option<String>,
+    pub message_type: Option<i32>,
+    pub context_token: Option<String>,
+    #[serde(default)]
+    pub item_list: Vec<MessageItem>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct GetConfigResponse {
+    pub ret: Option<i32>,
+    pub errmsg: Option<String>,
+    pub typing_ticket: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct SendTypingResponse {
+    pub ret: Option<i32>,
+    pub errmsg: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct MessageItem {
+    pub r#type: Option<i32>,
+    pub text_item: Option<TextItem>,
+    pub image_item: Option<ImageItem>,
+    pub voice_item: Option<VoiceItem>,
+    pub file_item: Option<FileItem>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct TextItem {
+    pub text: String,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct CdnMedia {
+    pub encrypt_query_param: Option<String>,
+    pub aes_key: Option<String>,
+    pub encrypt_type: Option<i32>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct ImageItem {
+    pub media: Option<CdnMedia>,
+    pub aeskey: Option<String>,
+    pub mid_size: Option<u64>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct VoiceItem {
+    pub media: Option<CdnMedia>,
+    pub encode_type: Option<i32>,
+    pub playtime: Option<u64>,
+    pub text: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct FileItem {
+    pub media: Option<CdnMedia>,
+    pub file_name: Option<String>,
+    pub len: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize, Serialize)]
+pub struct OutboundMetadata {
+    pub from_user_id: String,
+    pub to_user_id: Option<String>,
+    pub message_id: Option<i64>,
+    pub session_id: Option<String>,
+    pub context_token: Option<String>,
+}
+
+pub const MESSAGE_TYPE_USER: i32 = 1;
+pub const MESSAGE_TYPE_BOT: i32 = 2;
+pub const MESSAGE_STATE_FINISH: i32 = 2;
+pub const MESSAGE_ITEM_TEXT: i32 = 1;
+pub const MESSAGE_ITEM_IMAGE: i32 = 2;
+pub const MESSAGE_ITEM_VOICE: i32 = 3;
+pub const MESSAGE_ITEM_FILE: i32 = 4;
+pub const TYPING_STATUS_TYPING: i32 = 1;
+pub const TYPING_STATUS_CANCEL: i32 = 2;
+pub const UPLOAD_MEDIA_TYPE_IMAGE: i32 = 1;
@@ -0,0 +1,51 @@
+{
+  "version": "0.1.0",
+  "wit_version": "0.3.0",
+  "type": "channel",
+  "name": "wechat",
+  "description": "WeChat iLink Bot channel for direct-message chat via long polling",
+  "setup": {
+    "required_secrets": [
+      {
+        "name": "wechat_bot_token",
+        "prompt": "Connect this channel from the WeChat setup flow. IronClaw stores the bot token after QR login succeeds.",
+        "optional": false
+      }
+    ],
+    "setup_url": "https://ilinkai.weixin.qq.com"
+  },
+  "capabilities": {
+    "http": {
+      "allowlist": [
+        { "host": "ilinkai.weixin.qq.com", "path_prefix": "/" },
+        { "host": "novac2c.cdn.weixin.qq.com", "path_prefix": "/c2c/" }
+      ],
+      "rate_limit": {
+        "requests_per_minute": 60,
+        "requests_per_hour": 1200
+      }
+    },
+    "secrets": {
+      "allowed_names": ["wechat_*"]
+    },
+    "channel": {
+      "allowed_paths": [],
+      "allow_polling": true,
+      "min_poll_interval_ms": 30000,
+      "workspace_prefix": "channels/wechat/",
+      "callback_timeout_secs": 45,
+      "emit_rate_limit": {
+        "messages_per_minute": 100,
+        "messages_per_hour": 5000
+      }
+    }
+  },
+  "config": {
+    "base_url": "https://ilinkai.weixin.qq.com",
+    "cdn_base_url": "https://novac2c.cdn.weixin.qq.com/c2c",
+    "bot_type": "3",
+    "poll_interval_ms": 30000,
+    "long_poll_timeout_ms": 35000,
+    "inbound_merge_window_ms": 5000
+  }
+}
@@ -269,7 +269,7 @@ dependencies = [

 [[package]]
 name = "whatsapp-channel"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
 "serde",
 "serde_json",
@@ -0,0 +1,262 @@
+# WeChat Integration Design
+
+**Date:** 2026-03-25
+**Status:** Ready for implementation
+**Goal:** Add WeChat support to IronClaw using the same upstream iLink Bot protocol as `@tencent-weixin/openclaw-weixin`, while keeping the implementation aligned with IronClaw's extension-first channel architecture.
+
+---
+
+## Upstream Baseline
+
+The current upstream npm package is `@tencent-weixin/openclaw-weixin` version `2.0.1`.
+
+From the package README and source, the upstream WeChat channel does all of the following:
+
+- logs in by QR code against `https://ilinkai.weixin.qq.com`
+- receives inbound messages by long-polling `ilink/bot/getupdates`
+- sends outbound messages through `ilink/bot/sendmessage`
+- uses `ilink/bot/getconfig` and `ilink/bot/sendtyping` for typing indicators
+- uses `ilink/bot/getuploadurl` for media uploads
+- persists `get_updates_buf` for long-poll resume
+- persists `context_token` so replies stay attached to the right WeChat session
+- supports multiple logged-in WeChat bot accounts
+- treats WeChat as a direct-message-only channel
+- block-sends replies instead of token streaming
+
+This design treats that upstream behavior as the capability boundary. We should not add scope based on features the upstream plugin does not have.
+
+---
+
+## Implementation Direction
+
+IronClaw should **not** try to load the upstream OpenClaw plugin directly.
+
+Instead, IronClaw should implement a **native channel extension** under `channels-src/wechat/` and only extend the host/runtime where that support is generic and reusable.
+
+### Why not host the npm plugin directly
+
+- The upstream package depends on `openclaw/plugin-sdk/*` APIs and runtime contracts that IronClaw does not have.
+- It assumes OpenClaw-specific lifecycle concepts such as `gateway.startAccount`.
+- Recreating an OpenClaw-compatible Node plugin host inside IronClaw would be more work and more fragile than implementing the protocol directly.
+
+### Why `channels-src/wechat/`
+
+- It matches the existing layering used by other platform channels.
+- It keeps platform protocol logic out of host-owned core modules.
+- It leaves room for the channel to move outside this repo later without changing the host model.
+
+Recommended layout:
+
+```text
+channels-src/
+  wechat/
+    Cargo.toml
+    build.sh
+    wechat.capabilities.json
+    src/
+      lib.rs
+      api.rs
+      auth.rs
+      state.rs
+      types.rs
+```
+
+---
+
+## Phase 1 Scope
+
+Phase 1 is a **single-account** implementation of the upstream WeChat channel.
+
+The point of this phase is to keep the channel aligned with upstream behavior while removing the one biggest source of host/runtime complexity: multi-account lifecycle.
+
+### Must-have in Phase 1
+
+- QR code login
+- one connected WeChat bot account
+- direct-message text receive/send
+- `getupdates` long-poll loop
+- `sendmessage` outbound replies
+- typing indicators via `getconfig` and `sendtyping`
+- inbound image download/decrypt for vision
+- outbound image upload/send via `getuploadurl`
+- `context_token` persistence
+- `get_updates_buf` persistence
+- login persistence across restart
+- extension-first packaging under `channels-src/wechat/`
+
+### Explicit simplification from upstream
+
+- multi-account support is deferred
+
+### Follow-up after Phase 1
+
+These are upstream features, so they belong on the roadmap, but they do not need to block the first implementation cut:
+
+- broader media parity beyond the current image + inbound-file + inbound-voice path (outbound files and video)
+
+We should not spend time listing non-goals that come from outside the upstream capability boundary.
+
+---
+
+## Proposed Architecture
+
+```mermaid
+flowchart LR
+    A["Core WASM channel host"] --> B["WeChat channel extension"]
+    C["Generic login UI/API"] --> D["QR login session"]
+    D --> E["Secret storage"]
+    E --> B
+    B --> F["getupdates long-poll"]
+    F --> G["IncomingMessage"]
+    G --> H["ChannelManager -> Agent"]
+    H --> I["sendmessage reply"]
+```
+
+### Extension responsibilities
+
+`channels-src/wechat/` should own:
+
+- iLink API request/response types
+- QR login protocol calls
+- long-polling `getupdates`
+- `context_token` storage and lookup
+- outbound `sendmessage`
+- WeChat-specific status/error mapping
+
+### Host responsibilities
+
+IronClaw core should only own reusable pieces:
+
+- installing and activating the WASM channel
+- generic secret persistence
+- generic QR/device-login session handling for channels
+- exposing login flow through authenticated UI/API
+- starting and polling the channel runtime
+
+---
+
+## Data And State Model
+
+Phase 1 is single-account, so state should stay simple.
+
+### Secrets
+
+- `wechat_bot_token`
+
+This is written after QR login succeeds and reused on restart.
+
+### Channel state
+
+Under the channel workspace prefix, persist:
+
+- `state/get_updates_buf.json`
+- `state/context_tokens.json`
+
+`context_tokens.json` maps the WeChat peer to its latest `context_token`.
+
+### Inbound message mapping
+
+For each inbound WeChat DM:
+
+- `channel = "wechat"`
+- `user_id = <wechat sender id>` or owner scope if it is the bound owner
+- `thread_id = Some("wechat:<sender_id>")`
+- `conversation_scope_id = Some("wechat:<sender_id>")`
+
+`metadata_json` should include:
+
+- `from_user_id`
+- `to_user_id`
+- `message_id`
+- `context_token`
+
+That is enough for `on_respond()` to send the reply back to the right peer.
+
+---
+
+## Minimal Host Uplift
+
+The current extension host is close, but Phase 1 still needs one important addition: a generic interactive login flow for channels.
+
+Minimum host support needed:
+
+1. Start a channel login session.
+2. Return QR payload plus a session identifier.
+3. Poll login session status.
+4. On success, write the returned token to channel secrets.
+5. Reload or reactivate the channel so polling starts automatically.
+
+This should be added as a generic channel-auth capability, not as WeChat-specific core logic.
+
+---
+
+## User Flow
+
+Phase 1 should be **web-first**, because the target user is a normal WeChat user rather than a CLI-only operator.
+
+1. Install or enable the `wechat` channel extension.
+2. Click "Connect WeChat".
+3. Web UI requests a login session from the host.
+4. Web UI displays the QR code.
+5. User scans and confirms on their phone.
+6. Host stores `wechat_bot_token`.
+7. Channel reloads and starts polling.
+8. User sends a DM in WeChat and receives IronClaw replies there.
+
+CLI support can still exist for development, but it should not be the primary Phase 1 UX.
+
+---
+
+## Message Handling Semantics
+
+### Inbound
+
+On each poll:
+
+1. load `get_updates_buf`
+2. call `getupdates`
+3. persist the new cursor if present
+4. normalize inbound text messages into `IncomingMessage`
+5. persist the latest `context_token` for that peer
+6. emit the message to the agent
+
+### Outbound
+
+On response:
+
+1. read peer routing info from `metadata_json`
+2. load the latest `context_token`
+3. convert the response to plain text if needed
+4. send one coalesced text reply via `sendmessage`
+
+This matches the upstream channel's block-send behavior.
+
+---
+
+## Testing Plan
+
+### Unit tests
+
+- QR login response parsing
+- `get_updates_buf` round-trip
+- `context_token` round-trip
+- inbound message normalization
+- outbound metadata routing
+
+### Integration tests
+
+Use a mock iLink server to cover:
+
+- QR login success and expiry
+- restart without re-login
+- inbound poll -> agent -> outbound text reply
+- cursor resume after restart
+
+---
+
+## Phase 2
+
+After Phase 1 is stable, add the upstream features we intentionally deferred:
+
+- multi-account support
+- media upload/send
@@ -15,13 +15,14 @@
    },
    "messaging": {
      "display_name": "Messaging Channels",
-      "description": "Discord, Telegram, Slack, and WhatsApp channels",
+      "description": "Discord, Telegram, Slack, WhatsApp, and WeChat channels",
      "extensions": [
        "channels/discord",
        "channels/telegram",
        "channels/slack",
        "channels/whatsapp",
-        "channels/feishu"
+        "channels/feishu",
+        "channels/wechat"
      ],
      "shared_auth": null
    },
@@ -0,0 +1,32 @@
+{
+  "name": "wechat",
+  "display_name": "WeChat Channel",
+  "kind": "channel",
+  "version": "0.1.0",
+  "wit_version": "0.3.0",
+  "description": "Talk to your agent through a WeChat iLink bot account",
+  "keywords": [
+    "messaging",
+    "chat",
+    "wechat",
+    "wechat",
+    "qr"
+  ],
+  "source": {
+    "dir": "channels-src/wechat",
+    "capabilities": "wechat.capabilities.json",
+    "crate_name": "wechat-channel"
+  },
+  "auth_summary": {
+    "method": "interactive",
+    "provider": "WeChat",
+    "secrets": [
+      "wechat_bot_token"
+    ],
+    "shared_auth": null,
+    "setup_url": "https://ilinkai.weixin.qq.com"
+  },
+  "tags": [
+    "messaging"
+  ]
+}
@@ -303,7 +303,6 @@ impl<'a> LoopDelegate for ChatDelegate<'a> {
        } else {
            tool_defs
        };
-
        // Update context for this iteration
        reason_ctx.available_tools = tool_defs;
        // Preserve force_text if already set (e.g. by truncation escalation).
@@ -31,7 +31,58 @@ fn requires_preexisting_uuid_thread(channel: &str) -> bool {
    matches!(channel, "gateway" | "test")
 }

+fn validate_inbound_text_for_message(
+    safety: &crate::safety::SafetyLayer,
+    content: &str,
+    attachments: &[crate::channels::IncomingAttachment],
+) -> crate::safety::ValidationResult {
+    if content.trim().is_empty() && !attachments.is_empty() {
+        crate::safety::ValidationResult::ok()
+    } else {
+        safety.validate_input(content)
+    }
+}
+
 impl Agent {
+    fn reject_unsafe_inbound_user_message(
+        &self,
+        message: &IncomingMessage,
+        content: &str,
+    ) -> Option<SubmissionResult> {
+        let validation =
+            validate_inbound_text_for_message(self.safety(), content, &message.attachments);
+        if !validation.is_valid {
+            let details = validation
+                .errors
+                .iter()
+                .map(|e| format!("{}: {}", e.field, e.message))
+                .collect::<Vec<_>>()
+                .join("; ");
+            return Some(SubmissionResult::error(format!(
+                "Input rejected by safety validation: {details}",
+            )));
+        }
+
+        let violations = self.safety().check_policy(content);
+        if violations
+            .iter()
+            .any(|rule| rule.action == crate::safety::PolicyAction::Block)
+        {
+            return Some(SubmissionResult::error("Input rejected by safety policy."));
+        }
+
+        if let Some(warning) = self.safety().scan_inbound_for_secrets(content) {
+            tracing::warn!(
+                user = %message.user_id,
+                channel = %message.channel,
+                "Inbound message blocked: contains leaked secret"
+            );
+            return Some(SubmissionResult::error(warning));
+        }
+
+        None
+    }
+
    /// Hydrate a historical thread from DB into memory if not already present.
    ///
    /// Called before `resolve_thread` so that the session manager finds the
@@ -227,34 +278,11 @@ impl Agent {
                        }

                        // Run the same safety checks that the normal path applies
-                        // (validation, policy, secret scan) so that blocked content
-                        // is never stored in pending_messages or serialized.
-                        let validation = self.safety().validate_input(content);
-                        if !validation.is_valid {
-                            let details = validation
-                                .errors
-                                .iter()
-                                .map(|e| format!("{}: {}", e.field, e.message))
-                                .collect::<Vec<_>>()
-                                .join("; ");
-                            return Ok(SubmissionResult::error(format!(
-                                "Input rejected by safety validation: {details}",
-                            )));
-                        }
-                        let violations = self.safety().check_policy(content);
-                        if violations
-                            .iter()
-                            .any(|rule| rule.action == crate::safety::PolicyAction::Block)
+                        // so blocked content is never stored in pending_messages.
+                        if let Some(rejection) =
+                            self.reject_unsafe_inbound_user_message(message, content)
                        {
-                            return Ok(SubmissionResult::error("Input rejected by safety policy."));
-                        }
-                        if let Some(warning) = self.safety().scan_inbound_for_secrets(content) {
-                            tracing::warn!(
-                                user = %message.user_id,
-                                channel = %message.channel,
-                                "Queued message blocked: contains leaked secret"
-                            );
-                            return Ok(SubmissionResult::error(warning));
+                            return Ok(rejection);
                        }

                        if !thread.queue_message(content.to_string()) {
@@ -308,39 +336,11 @@ impl Agent {
            }
        }

-        // Safety validation for user input
-        let validation = self.safety().validate_input(content);
-        if !validation.is_valid {
-            let details = validation
-                .errors
-                .iter()
-                .map(|e| format!("{}: {}", e.field, e.message))
-                .collect::<Vec<_>>()
-                .join("; ");
-            return Ok(SubmissionResult::error(format!(
-                "Input rejected by safety validation: {}",
-                details
-            )));
-        }
-
-        let violations = self.safety().check_policy(content);
-        if violations
-            .iter()
-            .any(|rule| rule.action == crate::safety::PolicyAction::Block)
-        {
-            return Ok(SubmissionResult::error("Input rejected by safety policy."));
-        }
-
-        // Scan inbound messages for secrets (API keys, tokens).
-        // Catching them here prevents the LLM from echoing them back, which
-        // would trigger the outbound leak detector and create error loops.
-        if let Some(warning) = self.safety().scan_inbound_for_secrets(content) {
-            tracing::warn!(
-                user = %message.user_id,
-                channel = %message.channel,
-                "Inbound message blocked: contains leaked secret"
-            );
-            return Ok(SubmissionResult::error(warning));
+        // Validate inbound content before the turn is created. Attachment-only
+        // messages are allowed to pass through so multimodal channels can send
+        // an empty text body alongside real image/document payloads.
+        if let Some(rejection) = self.reject_unsafe_inbound_user_message(message, content) {
+            return Ok(rejection);
        }

        // Handle explicit commands (starting with /) directly
@@ -1934,6 +1934,9 @@ fn rebuild_chat_messages_from_db(
 #[cfg(test)]
 mod tests {
    use super::*;
+    use crate::channels::{AttachmentKind, IncomingAttachment};
+    use crate::config::SafetyConfig;
+    use crate::safety::SafetyLayer;

    #[test]
    fn test_rebuild_chat_messages_user_assistant_only() {
@@ -2071,6 +2074,45 @@ mod tests {
        assert_eq!(result[7].content, "Written");
    }

+    #[test]
+    fn test_validate_inbound_text_rejects_empty_text_without_attachments() {
+        let safety = SafetyLayer::new(&SafetyConfig {
+            max_output_length: 10_000,
+            injection_check_enabled: true,
+        });
+
+        let result = validate_inbound_text_for_message(&safety, "", &[]);
+        assert!(!result.is_valid);
+        assert_eq!(result.errors.len(), 1);
+        assert_eq!(result.errors[0].field, "input");
+        assert_eq!(result.errors[0].message, "Input cannot be empty");
+    }
+
+    #[test]
+    fn test_validate_inbound_text_allows_empty_text_when_attachments_exist() {
+        let safety = SafetyLayer::new(&SafetyConfig {
+            max_output_length: 10_000,
+            injection_check_enabled: true,
+        });
+
+        let attachments = vec![IncomingAttachment {
+            id: "image-1".to_string(),
+            kind: AttachmentKind::Image,
+            mime_type: "image/jpeg".to_string(),
+            filename: Some("photo.jpg".to_string()),
+            size_bytes: Some(128),
+            source_url: Some("https://example.com/photo.jpg".to_string()),
+            storage_key: None,
+            extracted_text: None,
+            data: vec![1, 2, 3],
+            duration_secs: None,
+        }];
+
+        let result = validate_inbound_text_for_message(&safety, "", &attachments);
+        assert!(result.is_valid);
+        assert!(result.errors.is_empty());
+    }
+
    fn make_db_msg(role: &str, content: &str) -> crate::history::ConversationMessage {
        crate::history::ConversationMessage {
            id: uuid::Uuid::new_v4(),
@@ -0,0 +1,435 @@
+use std::time::Duration;
+
+use aes::Aes128;
+use aes::cipher::{BlockDecrypt, KeyInit, generic_array::GenericArray};
+use base64::Engine as _;
+use serde::Deserialize;
+use silk_rs::decode_silk;
+
+use crate::channels::wasm::capabilities::ChannelCapabilities;
+use crate::channels::wasm::host::{Attachment, ChannelHostState};
+
+const AES_BLOCK_SIZE: usize = 16;
+const MAX_ATTACHMENT_BYTES: usize = 20 * 1024 * 1024;
+const WECHAT_CHANNEL_NAME: &str = "wechat";
+const WECHAT_SILK_SAMPLE_RATE_HZ: i32 = 24_000;
+
+#[derive(Debug, Deserialize)]
+struct WechatAttachmentExtras {
+    wechat_aes_key: Option<String>,
+}
+
+pub(crate) async fn hydrate_attachment_for_channel(
+    channel_name: &str,
+    capabilities: &ChannelCapabilities,
+    attachment: &mut Attachment,
+) {
+    if !should_hydrate_wechat_attachment(channel_name, attachment) {
+        return;
+    }
+
+    let Some(source_url) = attachment.source_url.as_deref() else {
+        return;
+    };
+    let Some(encoded_aes_key) = wechat_aes_key(&attachment.extras_json) else {
+        tracing::warn!(
+            channel = %channel_name,
+            attachment_id = %attachment.id,
+            "Skipping WeChat attachment hydration: missing AES key metadata"
+        );
+        return;
+    };
+
+    match download_wechat_attachment_bytes(channel_name, capabilities, source_url).await {
+        Ok(ciphertext) => match decrypt_wechat_attachment_bytes(&ciphertext, &encoded_aes_key) {
+            Ok(plaintext) => {
+                attachment.size_bytes = Some(plaintext.len() as u64);
+                attachment.data = plaintext;
+                if attachment.mime_type.starts_with("image/") {
+                    attachment.mime_type = detect_image_mime(&attachment.data).to_string();
+                } else if is_wechat_silk_attachment(attachment) {
+                    if let Err(error) = maybe_transcode_wechat_silk_attachment(attachment) {
+                        tracing::warn!(
+                            channel = %channel_name,
+                            attachment_id = %attachment.id,
+                            error = %error,
+                            "Failed to transcode WeChat SILK attachment; preserving raw SILK"
+                        );
+                    }
+                }
+            }
+            Err(error) => {
+                tracing::warn!(
+                    channel = %channel_name,
+                    attachment_id = %attachment.id,
+                    error = %error,
+                    "Failed to decrypt WeChat attachment"
+                );
+            }
+        },
+        Err(error) => {
+            tracing::warn!(
+                channel = %channel_name,
+                attachment_id = %attachment.id,
+                error = %error,
+                "Failed to download WeChat attachment"
+            );
+        }
+    }
+}
+
+fn is_wechat_silk_attachment(attachment: &Attachment) -> bool {
+    attachment.mime_type.eq_ignore_ascii_case("audio/silk")
+        || attachment
+            .filename
+            .as_deref()
+            .and_then(|filename| filename.rsplit_once('.').map(|(_, ext)| ext))
+            .is_some_and(|ext| ext.eq_ignore_ascii_case("silk"))
+}
+
+fn should_hydrate_wechat_attachment(channel_name: &str, attachment: &Attachment) -> bool {
+    channel_name == WECHAT_CHANNEL_NAME
+        && attachment.data.is_empty()
+        && attachment.source_url.is_some()
+}
+
+fn wechat_aes_key(extras_json: &str) -> Option<String> {
+    if extras_json.trim().is_empty() {
+        return None;
+    }
+
+    serde_json::from_str::<WechatAttachmentExtras>(extras_json)
+        .ok()
+        .and_then(|extras| extras.wechat_aes_key)
+        .filter(|value| !value.trim().is_empty())
+}
+
+async fn download_wechat_attachment_bytes(
+    channel_name: &str,
+    capabilities: &ChannelCapabilities,
+    source_url: &str,
+) -> Result<Vec<u8>, String> {
+    let host_state = ChannelHostState::new(channel_name, capabilities.clone());
+    host_state.check_http_allowed(source_url, "GET")?;
+
+    let client = reqwest::Client::builder()
+        .connect_timeout(Duration::from_secs(10))
+        .redirect(reqwest::redirect::Policy::none())
+        .build()
+        .map_err(|e| format!("Failed to build HTTP client: {e}"))?;
+
+    let response = client
+        .get(source_url)
+        .timeout(Duration::from_secs(15))
+        .send()
+        .await
+        .map_err(|e| format!("WeChat CDN download failed: {e}"))?;
+
+    if response.status() != reqwest::StatusCode::OK {
+        return Err(format!(
+            "WeChat CDN download returned {}",
+            response.status()
+        ));
+    }
+
+    let bytes = response
+        .bytes()
+        .await
+        .map_err(|e| format!("Failed to read WeChat CDN response body: {e}"))?
+        .to_vec();
+
+    if bytes.is_empty() {
+        return Err("WeChat CDN download returned an empty body".to_string());
+    }
+    if bytes.len() > MAX_ATTACHMENT_BYTES {
+        return Err(format!(
+            "WeChat attachment exceeds {MAX_ATTACHMENT_BYTES} bytes"
+        ));
+    }
+
+    Ok(bytes)
+}
+
+fn decrypt_wechat_attachment_bytes(
+    ciphertext: &[u8],
+    encoded_aes_key: &str,
+) -> Result<Vec<u8>, String> {
+    let key = parse_aes_key(encoded_aes_key)?;
+    decrypt_aes_ecb_pkcs7(ciphertext, &key)
+}
+
+fn parse_aes_key(encoded: &str) -> Result<Vec<u8>, String> {
+    let decoded = if encoded.len() == 32 && encoded.bytes().all(|byte| byte.is_ascii_hexdigit()) {
+        decode_hex(encoded)?
+    } else {
+        base64::engine::general_purpose::STANDARD
+            .decode(encoded)
+            .map_err(|e| format!("Failed to decode WeChat AES key: {e}"))?
+    };
+
+    if decoded.len() == AES_BLOCK_SIZE {
+        return Ok(decoded);
+    }
+
+    if decoded.len() == 32 && decoded.iter().all(|byte| byte.is_ascii_hexdigit()) {
+        return decode_hex(
+            std::str::from_utf8(&decoded)
+                .map_err(|e| format!("WeChat AES key hex payload is not valid UTF-8: {e}"))?,
+        );
+    }
+
+    Err(format!(
+        "WeChat AES key must decode to 16 bytes or a 32-char hex string, got {} bytes",
+        decoded.len()
+    ))
+}
+
+fn decode_hex(input: &str) -> Result<Vec<u8>, String> {
+    if !input.len().is_multiple_of(2) {
+        return Err("hex input length must be even".to_string());
+    }
+    let mut bytes = Vec::with_capacity(input.len() / 2);
+    let chars: Vec<u8> = input.as_bytes().to_vec();
+    for idx in (0..chars.len()).step_by(2) {
+        let high = from_hex_digit(chars[idx])?;
+        let low = from_hex_digit(chars[idx + 1])?;
+        bytes.push((high << 4) | low);
+    }
+    Ok(bytes)
+}
+
+fn from_hex_digit(value: u8) -> Result<u8, String> {
+    match value {
+        b'0'..=b'9' => Ok(value - b'0'),
+        b'a'..=b'f' => Ok(value - b'a' + 10),
+        b'A'..=b'F' => Ok(value - b'A' + 10),
+        _ => Err(format!("invalid hex digit '{}'", value as char)),
+    }
+}
+
+fn decrypt_aes_ecb_pkcs7(ciphertext: &[u8], key: &[u8]) -> Result<Vec<u8>, String> {
+    if !ciphertext.len().is_multiple_of(AES_BLOCK_SIZE) {
+        return Err("ciphertext length is not a multiple of 16 bytes".to_string());
+    }
+
+    let cipher = Aes128::new_from_slice(key).map_err(|e| format!("Invalid AES key: {e}"))?;
+    let mut plaintext = ciphertext.to_vec();
+    for chunk in plaintext.chunks_exact_mut(AES_BLOCK_SIZE) {
+        cipher.decrypt_block(GenericArray::from_mut_slice(chunk));
+    }
+
+    let pad_len = *plaintext
+        .last()
+        .ok_or_else(|| "ciphertext decrypted to an empty buffer".to_string())?
+        as usize;
+    if pad_len == 0 || pad_len > AES_BLOCK_SIZE || pad_len > plaintext.len() {
+        return Err("invalid PKCS7 padding".to_string());
+    }
+    if !plaintext[plaintext.len() - pad_len..]
+        .iter()
+        .all(|byte| *byte as usize == pad_len)
+    {
+        return Err("invalid PKCS7 padding bytes".to_string());
+    }
+    plaintext.truncate(plaintext.len() - pad_len);
+    Ok(plaintext)
+}
+
+fn detect_image_mime(bytes: &[u8]) -> &'static str {
+    if bytes.starts_with(&[0x89, b'P', b'N', b'G', 0x0D, 0x0A, 0x1A, 0x0A]) {
+        "image/png"
+    } else if bytes.starts_with(&[0xFF, 0xD8, 0xFF]) {
+        "image/jpeg"
+    } else if bytes.starts_with(b"GIF87a") || bytes.starts_with(b"GIF89a") {
+        "image/gif"
+    } else if bytes.len() >= 12 && &bytes[..4] == b"RIFF" && &bytes[8..12] == b"WEBP" {
+        "image/webp"
+    } else {
+        "image/jpeg"
+    }
+}
+
+fn maybe_transcode_wechat_silk_attachment(attachment: &mut Attachment) -> Result<(), String> {
+    if attachment.data.is_empty() {
+        return Err("SILK attachment has no data".to_string());
+    }
+
+    let pcm = decode_silk(&attachment.data, WECHAT_SILK_SAMPLE_RATE_HZ)
+        .map_err(|error| format!("SILK decode failed: {error}"))?;
+    if pcm.is_empty() {
+        return Err("SILK decoder returned empty PCM".to_string());
+    }
+
+    let wav = pcm_s16le_to_wav(&pcm, WECHAT_SILK_SAMPLE_RATE_HZ as u32)?;
+    attachment.data = wav;
+    attachment.size_bytes = Some(attachment.data.len() as u64);
+    attachment.mime_type = "audio/wav".to_string();
+    if let Some(filename) = attachment.filename.as_mut() {
+        replace_attachment_extension(filename, "wav");
+    }
+    Ok(())
+}
+
+fn pcm_s16le_to_wav(pcm: &[u8], sample_rate_hz: u32) -> Result<Vec<u8>, String> {
+    if !pcm.len().is_multiple_of(2) {
+        return Err("PCM buffer length must be even for 16-bit mono audio".to_string());
+    }
+
+    let data_len = u32::try_from(pcm.len())
+        .map_err(|_| "PCM buffer exceeds WAV container size limits".to_string())?;
+    let total_len = 44u32
+        .checked_add(data_len)
+        .ok_or_else(|| "WAV container size overflowed".to_string())?;
+    let byte_rate = sample_rate_hz
+        .checked_mul(2)
+        .ok_or_else(|| "WAV byte rate overflowed".to_string())?;
+
+    let mut wav = Vec::with_capacity(total_len as usize);
+    wav.extend_from_slice(b"RIFF");
+    wav.extend_from_slice(&(total_len - 8).to_le_bytes());
+    wav.extend_from_slice(b"WAVE");
+    wav.extend_from_slice(b"fmt ");
+    wav.extend_from_slice(&16u32.to_le_bytes());
+    wav.extend_from_slice(&1u16.to_le_bytes());
+    wav.extend_from_slice(&1u16.to_le_bytes());
+    wav.extend_from_slice(&sample_rate_hz.to_le_bytes());
+    wav.extend_from_slice(&byte_rate.to_le_bytes());
+    wav.extend_from_slice(&2u16.to_le_bytes());
+    wav.extend_from_slice(&16u16.to_le_bytes());
+    wav.extend_from_slice(b"data");
+    wav.extend_from_slice(&data_len.to_le_bytes());
+    wav.extend_from_slice(pcm);
+    Ok(wav)
+}
+
+fn replace_attachment_extension(filename: &mut String, replacement: &str) {
+    if let Some((stem, _)) = filename.rsplit_once('.') {
+        *filename = format!("{stem}.{replacement}");
+    } else {
+        filename.push('.');
+        filename.push_str(replacement);
+    }
+}
+
+#[cfg(test)]
+fn encrypt_aes_ecb_pkcs7(plaintext: &[u8], key: &[u8]) -> Result<Vec<u8>, String> {
+    use aes::cipher::BlockEncrypt;
+
+    let cipher = Aes128::new_from_slice(key).map_err(|e| format!("Invalid AES key: {e}"))?;
+    let mut padded = plaintext.to_vec();
+    let pad_len = AES_BLOCK_SIZE - (padded.len() % AES_BLOCK_SIZE);
+    padded.extend(std::iter::repeat_n(pad_len as u8, pad_len));
+
+    for chunk in padded.chunks_exact_mut(AES_BLOCK_SIZE) {
+        cipher.encrypt_block(GenericArray::from_mut_slice(chunk));
+    }
+
+    Ok(padded)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{
+        Attachment, decrypt_wechat_attachment_bytes, detect_image_mime, encrypt_aes_ecb_pkcs7,
+        hydrate_attachment_for_channel, maybe_transcode_wechat_silk_attachment, pcm_s16le_to_wav,
+        should_hydrate_wechat_attachment,
+    };
+    use crate::channels::wasm::ChannelCapabilities;
+    use base64::Engine as _;
+
+    fn make_attachment() -> Attachment {
+        Attachment {
+            id: "wechat-image-1".to_string(),
+            mime_type: "image/jpeg".to_string(),
+            filename: Some("wechat-image.jpg".to_string()),
+            size_bytes: None,
+            source_url: Some(
+                "https://novac2c.cdn.weixin.qq.com/c2c/download?encrypted_query_param=test"
+                    .to_string(),
+            ),
+            storage_key: None,
+            extracted_text: None,
+            extras_json: String::new(),
+            data: Vec::new(),
+            duration_secs: None,
+        }
+    }
+
+    fn encode_test_extras_json(aes_key: &str) -> String {
+        serde_json::json!({ "wechat_aes_key": aes_key }).to_string()
+    }
+
+    #[test]
+    fn decrypt_wechat_image_bytes_round_trips() {
+        let key = [7u8; 16];
+        let plaintext = vec![0xFF, 0xD8, 0xFF, 0xDB, 0x00, 0x11];
+        let ciphertext = encrypt_aes_ecb_pkcs7(&plaintext, &key).unwrap();
+        let encoded_key = base64::engine::general_purpose::STANDARD.encode(key);
+        let decrypted = decrypt_wechat_attachment_bytes(&ciphertext, &encoded_key).unwrap();
+        assert_eq!(decrypted, plaintext);
+    }
+
+    #[test]
+    fn detect_image_mime_prefers_magic_bytes() {
+        assert_eq!(detect_image_mime(&[0xFF, 0xD8, 0xFF, 0x00]), "image/jpeg");
+        assert_eq!(
+            detect_image_mime(&[0x89, b'P', b'N', b'G', 0x0D, 0x0A, 0x1A, 0x0A]),
+            "image/png"
+        );
+    }
+
+    #[test]
+    fn wechat_attachment_hydration_applies_to_wechat_encrypted_media() {
+        let mut attachment = make_attachment();
+        attachment.extras_json = encode_test_extras_json("ZmFrZS1rZXk=");
+        assert!(should_hydrate_wechat_attachment("wechat", &attachment));
+        assert!(!should_hydrate_wechat_attachment("telegram", &attachment));
+
+        attachment.mime_type = "application/pdf".to_string();
+        assert!(should_hydrate_wechat_attachment("wechat", &attachment));
+    }
+
+    #[tokio::test]
+    async fn hydration_skips_when_metadata_is_missing() {
+        let mut attachment = make_attachment();
+        let caps = ChannelCapabilities::for_channel("wechat");
+        hydrate_attachment_for_channel("wechat", &caps, &mut attachment).await;
+        assert!(attachment.data.is_empty());
+        assert_eq!(attachment.size_bytes, None);
+    }
+
+    #[test]
+    fn pcm_s16le_to_wav_wraps_pcm_with_expected_header() {
+        let wav = pcm_s16le_to_wav(&[0x00, 0x00, 0x01, 0x00], 24_000).expect("wav wrapping");
+        assert!(wav.starts_with(b"RIFF"));
+        assert_eq!(&wav[8..12], b"WAVE");
+        assert_eq!(&wav[12..16], b"fmt ");
+        assert_eq!(&wav[36..40], b"data");
+        assert_eq!(&wav[40..44], &(4u32).to_le_bytes());
+        assert_eq!(&wav[44..], &[0x00, 0x00, 0x01, 0x00]);
+    }
+
+    #[test]
+    fn silk_transcode_failure_preserves_raw_silk_path_for_callers() {
+        let mut attachment = Attachment {
+            id: "wechat-voice-1".to_string(),
+            mime_type: "audio/silk".to_string(),
+            filename: Some("wechat-voice-1.silk".to_string()),
+            size_bytes: Some(3),
+            source_url: None,
+            storage_key: None,
+            extracted_text: None,
+            extras_json: encode_test_extras_json("ZmFrZS1rZXk="),
+            data: vec![1, 2, 3],
+            duration_secs: Some(1),
+        };
+
+        let original = attachment.data.clone();
+        let error =
+            maybe_transcode_wechat_silk_attachment(&mut attachment).expect_err("invalid SILK");
+        assert!(error.contains("SILK decode failed"));
+        assert_eq!(attachment.mime_type, "audio/silk");
+        assert_eq!(attachment.filename.as_deref(), Some("wechat-voice-1.silk"));
+        assert_eq!(attachment.data, original);
+    }
+}
@@ -35,6 +35,8 @@ pub struct Attachment {
    pub storage_key: Option<String>,
    /// Extracted text content (e.g., OCR result, PDF text, audio transcript).
    pub extracted_text: Option<String>,
+    /// Extensible metadata from the channel payload.
+    pub extras_json: String,
    /// Raw file bytes (for small files downloaded by the channel).
    pub data: Vec<u8>,
    /// Duration in seconds (for audio/video).
@@ -995,6 +997,7 @@ mod tests {
            source_url: None,
            storage_key: None,
            extracted_text: None,
+            extras_json: String::new(),
            data: Vec::new(),
            duration_secs: None,
        }
@@ -78,6 +78,7 @@
 //! }
 //! ```

+mod attachment_hydration;
 mod bundled;
 mod capabilities;
 mod error;
@@ -159,6 +159,11 @@ impl WasmChannelRouter {
        self.channels.read().await.get(channel_name).cloned()
    }

+    /// Get a registered channel directly by name.
+    pub async fn get_channel_by_name(&self, channel_name: &str) -> Option<Arc<WasmChannel>> {
+        self.channels.read().await.get(channel_name).cloned()
+    }
+
    /// Validate a secret for a channel.
    pub async fn validate_secret(&self, channel_name: &str, provided: &str) -> bool {
        let secrets = self.secrets.read().await;
@@ -710,6 +715,10 @@ mod tests {
        // Should not find non-existent path
        let not_found = router.get_channel_for_path("/webhook/telegram").await;
        assert!(not_found.is_none());
+
+        let found_by_name = router.get_channel_by_name("slack").await;
+        assert!(found_by_name.is_some());
+        assert_eq!(found_by_name.unwrap().channel_name(), "slack");
    }

    #[tokio::test]
@@ -139,6 +139,13 @@ impl ChannelCapabilitiesFile {
        serde_json::to_string(&self.config).unwrap_or_else(|_| "{}".to_string())
    }

+    /// Whether this channel declares owner/pairing gating in its config.
+    pub fn requires_binding(&self) -> bool {
+        ["owner_id", "dm_policy", "allow_from"]
+            .iter()
+            .any(|key| self.config.contains_key(*key))
+    }
+
    /// Get the webhook secret header name for this channel.
    ///
    /// Returns the configured header name from capabilities, or a sensible default.
@@ -569,6 +576,34 @@ mod tests {
        assert_eq!(caps.workspace_prefix, "integrations/custom/");
    }

+    #[test]
+    fn test_requires_binding_detects_dm_owner_fields() {
+        let telegram = ChannelCapabilitiesFile::from_json(
+            r#"{
+                "name": "telegram",
+                "config": {
+                    "owner_id": null,
+                    "dm_policy": "pairing",
+                    "allow_from": []
+                }
+            }"#,
+        )
+        .unwrap();
+        assert!(telegram.requires_binding());
+
+        let wechat = ChannelCapabilitiesFile::from_json(
+            r#"{
+                "name": "wechat",
+                "config": {
+                    "base_url": "https://ilinkai.weixin.qq.com",
+                    "bot_type": "3"
+                }
+            }"#,
+        )
+        .unwrap();
+        assert!(!wechat.requires_binding());
+    }
+
    #[test]
    fn test_emit_rate_limit() {
        let json = r#"{
@@ -190,7 +190,20 @@ async fn register_channel(
        // The credential injection system only replaces placeholders in URLs
        // and headers, so channels like Feishu that exchange app_id + app_secret
        // for a tenant token need the raw values in their config.
-        inject_channel_secrets_into_config(&channel_name, secrets_store, &mut config_updates).await;
+        inject_channel_secrets_into_config(
+            &channel_name,
+            &config.owner_id,
+            secrets_store,
+            &mut config_updates,
+        )
+        .await;
+        inject_channel_settings_into_config(
+            &channel_name,
+            &config.owner_id,
+            settings_store,
+            &mut config_updates,
+        )
+        .await;

        if !config_updates.is_empty() {
            channel_arc.update_config(config_updates).await;
@@ -396,6 +409,7 @@ pub async fn inject_channel_credentials(
 /// `feishu_app_secret` are injected as config keys `app_id` and `app_secret`.
 async fn inject_channel_secrets_into_config(
    channel_name: &str,
+    owner_id: &str,
    secrets_store: &Option<Arc<dyn SecretsStore + Send + Sync>>,
    config_updates: &mut std::collections::HashMap<String, serde_json::Value>,
 ) {
@@ -413,7 +427,7 @@ async fn inject_channel_secrets_into_config(
    };

    for &(config_key, secret_name) in secret_config_mappings {
-        match secrets.get_decrypted("default", secret_name).await {
+        match secrets.get_decrypted(owner_id, secret_name).await {
            Ok(decrypted) => {
                config_updates.insert(
                    config_key.to_string(),
@@ -442,3 +456,94 @@ async fn inject_channel_secrets_into_config(
        }
    }
 }
+
+/// Inject channel-specific settings into config for channels that persist
+/// runtime-discovered values (for example a custom API base URL after login).
+async fn inject_channel_settings_into_config(
+    channel_name: &str,
+    owner_id: &str,
+    settings_store: Option<&Arc<dyn crate::db::SettingsStore>>,
+    config_updates: &mut std::collections::HashMap<String, serde_json::Value>,
+) {
+    let Some(store) = settings_store else {
+        return;
+    };
+
+    let setting_mappings: &[(&str, &str)] = match channel_name {
+        "wechat" => &[("base_url", "extensions.wechat.base_url")],
+        _ => return,
+    };
+
+    for &(config_key, setting_path) in setting_mappings {
+        if let Ok(Some(serde_json::Value::String(value))) =
+            store.get_setting(owner_id, setting_path).await
+        {
+            let trimmed = value.trim();
+            if trimmed.is_empty() {
+                continue;
+            }
+            config_updates.insert(
+                config_key.to_string(),
+                serde_json::Value::String(trimmed.to_string()),
+            );
+            tracing::debug!(
+                channel = %channel_name,
+                config_key = %config_key,
+                setting_path = %setting_path,
+                "Injected setting into channel config"
+            );
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::sync::Arc;
+
+    use crate::db::{Database, SettingsStore};
+
+    #[tokio::test]
+    async fn test_inject_channel_settings_uses_owner_scope() -> Result<(), String> {
+        let dir = tempfile::tempdir().map_err(|e| format!("tempdir failed: {e}"))?;
+        let db_path = dir.path().join("wechat-settings.db");
+        let db = Arc::new(
+            crate::db::libsql::LibSqlBackend::new_local(&db_path)
+                .await
+                .map_err(|e| format!("create local libsql backend failed: {e}"))?,
+        );
+        db.run_migrations()
+            .await
+            .map_err(|e| format!("run libsql migrations failed: {e}"))?;
+
+        db.set_setting(
+            "default",
+            "extensions.wechat.base_url",
+            &serde_json::json!("https://default.example"),
+        )
+        .await
+        .map_err(|e| format!("persist default setting failed: {e}"))?;
+        db.set_setting(
+            "owner-123",
+            "extensions.wechat.base_url",
+            &serde_json::json!("https://owner.example"),
+        )
+        .await
+        .map_err(|e| format!("persist owner setting failed: {e}"))?;
+
+        let settings_store: Arc<dyn crate::db::SettingsStore> = db;
+        let mut config_updates = std::collections::HashMap::new();
+        super::inject_channel_settings_into_config(
+            "wechat",
+            "owner-123",
+            Some(&settings_store),
+            &mut config_updates,
+        )
+        .await;
+
+        assert_eq!(
+            config_updates.get("base_url"),
+            Some(&serde_json::json!("https://owner.example"))
+        );
+        Ok(())
+    }
+}
@@ -573,6 +573,7 @@ impl near::agent::channel_host::Host for ChannelStoreData {
                    source_url: a.source_url,
                    storage_key: a.storage_key,
                    extracted_text: a.extracted_text,
+                    extras_json: a.extras_json,
                    data,
                    duration_secs,
                }
@@ -1181,22 +1182,32 @@ impl WasmChannel {
        )
    }

-    fn log_on_start_host_state(&self, host_state: &mut ChannelHostState) {
+    fn log_host_state_entries(channel_name: &str, host_state: &mut ChannelHostState) {
        for entry in host_state.take_logs() {
            match entry.level {
+                crate::tools::wasm::LogLevel::Trace => {
+                    tracing::trace!(channel = %channel_name, "{}", entry.message);
+                }
+                crate::tools::wasm::LogLevel::Debug => {
+                    tracing::debug!(channel = %channel_name, "{}", entry.message);
+                }
+                crate::tools::wasm::LogLevel::Info => {
+                    tracing::info!(channel = %channel_name, "{}", entry.message);
+                }
                crate::tools::wasm::LogLevel::Error => {
-                    tracing::error!(channel = %self.name, "{}", entry.message);
+                    tracing::error!(channel = %channel_name, "{}", entry.message);
                }
                crate::tools::wasm::LogLevel::Warn => {
-                    tracing::warn!(channel = %self.name, "{}", entry.message);
-                }
-                _ => {
-                    tracing::debug!(channel = %self.name, "{}", entry.message);
+                    tracing::warn!(channel = %channel_name, "{}", entry.message);
                }
            }
        }
    }

+    fn log_on_start_host_state(&self, host_state: &mut ChannelHostState) {
+        Self::log_host_state_entries(&self.name, host_state);
+    }
+
    async fn execute_on_start_with_state(
        &self,
    ) -> Result<(Result<ChannelConfig, WasmChannelError>, ChannelHostState), WasmChannelError> {
@@ -1480,18 +1491,20 @@ impl WasmChannel {

                // Call on_poll using the generated typed interface
                let channel_iface = instance.near_agent_channel();
-                channel_iface
+                let poll_result = channel_iface
                    .call_on_poll(&mut store)
-                    .map_err(|e| Self::map_wasm_error(e, &prepared.name, prepared.limits.fuel))?;
+                    .map_err(|e| Self::map_wasm_error(e, &prepared.name, prepared.limits.fuel));

                let mut host_state =
                    Self::extract_host_state(&mut store, &prepared.name, &capabilities);

-                // Commit pending workspace writes to the persistent store
-                let pending_writes = host_state.take_pending_writes();
-                workspace_store.commit_writes(&pending_writes);
+                if poll_result.is_ok() {
+                    // Commit pending workspace writes only after a successful callback.
+                    let pending_writes = host_state.take_pending_writes();
+                    workspace_store.commit_writes(&pending_writes);
+                }

-                Ok(((), host_state))
+                Ok((poll_result, host_state))
            })
            .await
            .map_err(|e| WasmChannelError::ExecutionPanicked {
@@ -1503,7 +1516,10 @@ impl WasmChannel {

        let channel_name = self.name.clone();
        match result {
-            Ok(Ok(((), mut host_state))) => {
+            Ok(Ok((poll_result, mut host_state))) => {
+                Self::log_host_state_entries(&channel_name, &mut host_state);
+                poll_result?;
+
                // Process emitted messages
                let emitted = host_state.take_emitted_messages();
                self.process_emitted_messages(emitted).await?;
@@ -2181,6 +2197,16 @@ impl WasmChannel {
        };

        for emitted in messages {
+            let EmittedMessage {
+                user_id,
+                user_name,
+                content,
+                thread_id,
+                metadata_json,
+                attachments,
+                ..
+            } = emitted;
+
            // Check rate limit — acquire and release the write lock before send().await
            {
                let mut rate_limiter = self.rate_limiter.write().await;
@@ -2198,55 +2224,41 @@ impl WasmChannel {
            let (resolved_user_id, is_owner_sender) = resolve_message_scope(
                &self.owner_scope_id,
                self.owner_actor_id.as_deref(),
-                &emitted.user_id,
+                &user_id,
            );

            // Convert to IncomingMessage
-            let mut msg = IncomingMessage::new(&self.name, &resolved_user_id, &emitted.content)
+            let mut msg = IncomingMessage::new(&self.name, &resolved_user_id, &content)
                .with_owner_id(&self.owner_scope_id)
-                .with_sender_id(&emitted.user_id);
+                .with_sender_id(&user_id);

-            if let Some(name) = emitted.user_name {
+            if let Some(name) = user_name {
                msg = msg.with_user_name(name);
            }

-            if let Some(thread_id) = emitted.thread_id {
+            if let Some(thread_id) = thread_id {
                msg = msg.with_thread(thread_id);
            }

            // Convert attachments
-            if !emitted.attachments.is_empty() {
-                let incoming_attachments = emitted
-                    .attachments
-                    .iter()
-                    .map(|a| crate::channels::IncomingAttachment {
-                        id: a.id.clone(),
-                        kind: crate::channels::AttachmentKind::from_mime_type(&a.mime_type),
-                        mime_type: a.mime_type.clone(),
-                        filename: a.filename.clone(),
-                        size_bytes: a.size_bytes,
-                        source_url: a.source_url.clone(),
-                        storage_key: a.storage_key.clone(),
-                        extracted_text: a.extracted_text.clone(),
-                        data: a.data.clone(),
-                        duration_secs: a.duration_secs,
-                    })
-                    .collect();
+            if !attachments.is_empty() {
+                let incoming_attachments =
+                    convert_emitted_attachments(&self.name, &self.capabilities, attachments).await;
                msg = msg.with_attachments(incoming_attachments);
            }

            // Parse metadata JSON
-            msg = apply_emitted_metadata(msg, &emitted.metadata_json);
+            msg = apply_emitted_metadata(msg, &metadata_json);
            if is_owner_sender {
                // Store for owner-target routing (chat_id etc.).
-                self.update_broadcast_metadata(&emitted.metadata_json).await;
+                self.update_broadcast_metadata(&metadata_json).await;
            }

            // Send to stream — no locks held across this await
            tracing::info!(
                channel = %self.name,
-                user_id = %emitted.user_id,
-                content_len = emitted.content.len(),
+                user_id = %user_id,
+                content_len = content.len(),
                attachment_count = msg.attachments.len(),
                "Sending emitted message to agent"
            );
@@ -2331,6 +2343,7 @@ impl WasmChannel {
                                    && let Err(e) = Self::dispatch_emitted_messages(
                                        EmitDispatchContext {
                                            channel_name: &channel_name,
+                                            capabilities: &capabilities,
                                            owner_scope_id: &owner_scope_id,
                                            owner_actor_id: owner_actor_id.as_deref(),
                                            message_tx: &message_tx,
@@ -2416,18 +2429,20 @@ impl WasmChannel {

                // Call on_poll using the generated typed interface
                let channel_iface = instance.near_agent_channel();
-                channel_iface
+                let poll_result = channel_iface
                    .call_on_poll(&mut store)
-                    .map_err(|e| Self::map_wasm_error(e, &prepared.name, prepared.limits.fuel))?;
+                    .map_err(|e| Self::map_wasm_error(e, &prepared.name, prepared.limits.fuel));

                let mut host_state =
                    Self::extract_host_state(&mut store, &prepared.name, &capabilities);

-                // Commit pending workspace writes to the persistent store
-                let pending_writes = host_state.take_pending_writes();
-                workspace_store.commit_writes(&pending_writes);
+                if poll_result.is_ok() {
+                    // Commit pending workspace writes only after a successful callback.
+                    let pending_writes = host_state.take_pending_writes();
+                    workspace_store.commit_writes(&pending_writes);
+                }

-                Ok(host_state)
+                Ok((poll_result, host_state))
            })
            .await
            .map_err(|e| WasmChannelError::ExecutionPanicked {
@@ -2438,7 +2453,10 @@ impl WasmChannel {
        .await;

        match result {
-            Ok(Ok(mut host_state)) => {
+            Ok(Ok((poll_result, mut host_state))) => {
+                Self::log_host_state_entries(channel_name, &mut host_state);
+                poll_result?;
+
                let emitted = host_state.take_emitted_messages();
                tracing::debug!(
                    channel = %channel_name,
@@ -2484,6 +2502,16 @@ impl WasmChannel {
        };

        for emitted in messages {
+            let EmittedMessage {
+                user_id,
+                user_name,
+                content,
+                thread_id,
+                metadata_json,
+                attachments,
+                ..
+            } = emitted;
+
            // Check rate limit — acquire and release the write lock before send().await
            {
                let mut limiter = dispatch.rate_limiter.write().await;
@@ -2498,54 +2526,40 @@ impl WasmChannel {
                }
            }

-            let (resolved_user_id, is_owner_sender) = resolve_message_scope(
-                dispatch.owner_scope_id,
-                dispatch.owner_actor_id,
-                &emitted.user_id,
-            );
+            let (resolved_user_id, is_owner_sender) =
+                resolve_message_scope(dispatch.owner_scope_id, dispatch.owner_actor_id, &user_id);

            // Convert to IncomingMessage
-            let mut msg =
-                IncomingMessage::new(dispatch.channel_name, &resolved_user_id, &emitted.content)
-                    .with_owner_id(dispatch.owner_scope_id)
-                    .with_sender_id(&emitted.user_id);
+            let mut msg = IncomingMessage::new(dispatch.channel_name, &resolved_user_id, &content)
+                .with_owner_id(dispatch.owner_scope_id)
+                .with_sender_id(&user_id);

-            if let Some(name) = emitted.user_name {
+            if let Some(name) = user_name {
                msg = msg.with_user_name(name);
            }

-            if let Some(thread_id) = emitted.thread_id {
+            if let Some(thread_id) = thread_id {
                msg = msg.with_thread(thread_id);
            }

            // Convert attachments
-            if !emitted.attachments.is_empty() {
-                let incoming_attachments = emitted
-                    .attachments
-                    .iter()
-                    .map(|a| crate::channels::IncomingAttachment {
-                        id: a.id.clone(),
-                        kind: crate::channels::AttachmentKind::from_mime_type(&a.mime_type),
-                        mime_type: a.mime_type.clone(),
-                        filename: a.filename.clone(),
-                        size_bytes: a.size_bytes,
-                        source_url: a.source_url.clone(),
-                        storage_key: a.storage_key.clone(),
-                        extracted_text: a.extracted_text.clone(),
-                        data: a.data.clone(),
-                        duration_secs: a.duration_secs,
-                    })
-                    .collect();
+            if !attachments.is_empty() {
+                let incoming_attachments = convert_emitted_attachments(
+                    dispatch.channel_name,
+                    dispatch.capabilities,
+                    attachments,
+                )
+                .await;
                msg = msg.with_attachments(incoming_attachments);
            }

-            msg = apply_emitted_metadata(msg, &emitted.metadata_json);
+            msg = apply_emitted_metadata(msg, &metadata_json);
            if is_owner_sender {
                // Store for owner-target routing (chat_id etc.)
                do_update_broadcast_metadata(
                    dispatch.channel_name,
                    dispatch.owner_scope_id,
-                    &emitted.metadata_json,
+                    &metadata_json,
                    dispatch.last_broadcast_metadata,
                    dispatch.settings_store,
                )
@@ -2555,8 +2569,8 @@ impl WasmChannel {
            // Send to stream — no locks held across this await
            tracing::info!(
                channel = %dispatch.channel_name,
-                user_id = %emitted.user_id,
-                content_len = emitted.content.len(),
+                user_id = %user_id,
+                content_len = content.len(),
                attachment_count = msg.attachments.len(),
                "Sending polled message to agent"
            );
@@ -2581,6 +2595,7 @@ impl WasmChannel {

 struct EmitDispatchContext<'a> {
    channel_name: &'a str,
+    capabilities: &'a ChannelCapabilities,
    owner_scope_id: &'a str,
    owner_actor_id: Option<&'a str>,
    message_tx: &'a RwLock<Option<mpsc::Sender<IncomingMessage>>>,
@@ -3257,6 +3272,38 @@ async fn resolve_channel_host_credentials(
 /// Maximum total attachment size (50 MB).
 const MAX_TOTAL_ATTACHMENT_BYTES: u64 = 50 * 1024 * 1024;

+async fn convert_emitted_attachments(
+    channel_name: &str,
+    capabilities: &ChannelCapabilities,
+    attachments: Vec<crate::channels::wasm::host::Attachment>,
+) -> Vec<crate::channels::IncomingAttachment> {
+    let mut hydrated = attachments;
+    for attachment in &mut hydrated {
+        crate::channels::wasm::attachment_hydration::hydrate_attachment_for_channel(
+            channel_name,
+            capabilities,
+            attachment,
+        )
+        .await;
+    }
+
+    hydrated
+        .into_iter()
+        .map(|attachment| crate::channels::IncomingAttachment {
+            id: attachment.id,
+            kind: crate::channels::AttachmentKind::from_mime_type(&attachment.mime_type),
+            mime_type: attachment.mime_type,
+            filename: attachment.filename,
+            size_bytes: attachment.size_bytes,
+            source_url: attachment.source_url,
+            storage_key: attachment.storage_key,
+            extracted_text: attachment.extracted_text,
+            data: attachment.data,
+            duration_secs: attachment.duration_secs,
+        })
+        .collect()
+}
+
 /// Detect MIME type from file extension using the `mime_guess` crate.
 fn mime_from_extension(path: &str) -> String {
    mime_guess::from_path(path)
@@ -3469,6 +3516,8 @@ mod tests {

        let (tx, mut rx) = tokio::sync::mpsc::channel(10);
        let message_tx = Arc::new(tokio::sync::RwLock::new(Some(tx)));
+        let capabilities =
+            crate::channels::wasm::capabilities::ChannelCapabilities::for_channel("test-channel");

        let rate_limiter = Arc::new(tokio::sync::RwLock::new(
            crate::channels::wasm::host::ChannelEmitRateLimiter::new(
@@ -3485,6 +3534,7 @@ mod tests {
        let result = WasmChannel::dispatch_emitted_messages(
            EmitDispatchContext {
                channel_name: "test-channel",
+                capabilities: &capabilities,
                owner_scope_id: "default",
                owner_actor_id: None,
                message_tx: &message_tx,
@@ -3517,6 +3567,8 @@ mod tests {

        // No sender available (channel not started)
        let message_tx = Arc::new(tokio::sync::RwLock::new(None));
+        let capabilities =
+            crate::channels::wasm::capabilities::ChannelCapabilities::for_channel("test-channel");
        let rate_limiter = Arc::new(tokio::sync::RwLock::new(
            crate::channels::wasm::host::ChannelEmitRateLimiter::new(
                crate::channels::wasm::capabilities::EmitRateLimitConfig::default(),
@@ -3530,6 +3582,7 @@ mod tests {
        let result = WasmChannel::dispatch_emitted_messages(
            EmitDispatchContext {
                channel_name: "test-channel",
+                capabilities: &capabilities,
                owner_scope_id: "default",
                owner_actor_id: None,
                message_tx: &message_tx,
@@ -4520,6 +4573,8 @@ mod tests {

        let (tx, mut rx) = tokio::sync::mpsc::channel(10);
        let message_tx = Arc::new(tokio::sync::RwLock::new(Some(tx)));
+        let capabilities =
+            crate::channels::wasm::capabilities::ChannelCapabilities::for_channel("test-channel");

        let rate_limiter = Arc::new(tokio::sync::RwLock::new(
            crate::channels::wasm::host::ChannelEmitRateLimiter::new(
@@ -4536,6 +4591,7 @@ mod tests {
                source_url: Some("https://api.telegram.org/file/photo123".to_string()),
                storage_key: None,
                extracted_text: None,
+                extras_json: String::new(),
                data: Vec::new(),
                duration_secs: None,
            },
@@ -4547,6 +4603,7 @@ mod tests {
                source_url: None,
                storage_key: Some("store/doc456".to_string()),
                extracted_text: Some("Report contents...".to_string()),
+                extras_json: String::new(),
                data: Vec::new(),
                duration_secs: None,
            },
@@ -4559,6 +4616,7 @@ mod tests {
        let result = WasmChannel::dispatch_emitted_messages(
            EmitDispatchContext {
                channel_name: "test-channel",
+                capabilities: &capabilities,
                owner_scope_id: "default",
                owner_actor_id: None,
                message_tx: &message_tx,
@@ -4605,6 +4663,8 @@ mod tests {

        let (tx, mut rx) = tokio::sync::mpsc::channel(10);
        let message_tx = Arc::new(tokio::sync::RwLock::new(Some(tx)));
+        let capabilities =
+            crate::channels::wasm::capabilities::ChannelCapabilities::for_channel("telegram");
        let rate_limiter = Arc::new(tokio::sync::RwLock::new(
            crate::channels::wasm::host::ChannelEmitRateLimiter::new(
                crate::channels::wasm::capabilities::EmitRateLimitConfig::default(),
@@ -4620,6 +4680,7 @@ mod tests {
        let result = WasmChannel::dispatch_emitted_messages(
            EmitDispatchContext {
                channel_name: "telegram",
+                capabilities: &capabilities,
                owner_scope_id: "owner-scope",
                owner_actor_id: Some("telegram-owner"),
                message_tx: &message_tx,
@@ -4648,6 +4709,8 @@ mod tests {

        let (tx, mut rx) = tokio::sync::mpsc::channel(10);
        let message_tx = Arc::new(tokio::sync::RwLock::new(Some(tx)));
+        let capabilities =
+            crate::channels::wasm::capabilities::ChannelCapabilities::for_channel("telegram");
        let rate_limiter = Arc::new(tokio::sync::RwLock::new(
            crate::channels::wasm::host::ChannelEmitRateLimiter::new(
                crate::channels::wasm::capabilities::EmitRateLimitConfig::default(),
@@ -4662,6 +4725,7 @@ mod tests {
        let result = WasmChannel::dispatch_emitted_messages(
            EmitDispatchContext {
                channel_name: "telegram",
+                capabilities: &capabilities,
                owner_scope_id: "owner-scope",
                owner_actor_id: Some("telegram-owner"),
                message_tx: &message_tx,
@@ -4731,6 +4795,8 @@ mod tests {

        let (tx, mut rx) = tokio::sync::mpsc::channel(10);
        let message_tx = Arc::new(tokio::sync::RwLock::new(Some(tx)));
+        let capabilities =
+            crate::channels::wasm::capabilities::ChannelCapabilities::for_channel("test-channel");

        let rate_limiter = Arc::new(tokio::sync::RwLock::new(
            crate::channels::wasm::host::ChannelEmitRateLimiter::new(
@@ -4744,6 +4810,7 @@ mod tests {
        let result = WasmChannel::dispatch_emitted_messages(
            EmitDispatchContext {
                channel_name: "test-channel",
+                capabilities: &capabilities,
                owner_scope_id: "default",
                owner_actor_id: None,
                message_tx: &message_tx,
@@ -47,6 +47,7 @@ pub async fn extensions_list_handler(
                    &ext,
                    has_paired,
                    owner_bound_channels.contains(&ext.name),
+                    ext.requires_binding,
                )
            } else if ext.kind == crate::extensions::ExtensionKind::ChannelRelay {
                Some(if ext.active {
@@ -474,6 +474,14 @@ pub async fn start_server(
            "/api/extensions/{name}/setup",
            get(extensions_setup_handler).post(extensions_setup_submit_handler),
        )
+        .route(
+            "/api/extensions/{name}/login/start",
+            post(extensions_login_start_handler),
+        )
+        .route(
+            "/api/extensions/{name}/login/poll",
+            post(extensions_login_poll_handler),
+        )
        // Pairing
        .route("/api/pairing/{channel}", get(pairing_list_handler))
        .route(
@@ -593,7 +601,7 @@ pub async fn start_server(
                 style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; \
                 font-src https://fonts.gstatic.com; \
                 connect-src 'self'; \
-                 img-src 'self' data:; \
+                 img-src 'self' data: https://liteapp.weixin.qq.com; \
                 object-src 'none'; \
                 frame-ancestors 'none'; \
                 base-uri 'self'; \
@@ -2069,6 +2077,7 @@ async fn extensions_list_handler(
                    &ext,
                    has_paired,
                    owner_bound_channels.contains(&ext.name),
+                    ext.requires_binding,
                )
            } else if ext.kind == crate::extensions::ExtensionKind::ChannelRelay {
                Some(if ext.active {
@@ -2491,9 +2500,93 @@ async fn extensions_setup_handler(
        kind,
        secrets: setup.secrets,
        fields: setup.fields,
+        interactive_login: setup.interactive_login,
    }))
 }

+async fn extensions_login_start_handler(
+    State(state): State<Arc<GatewayState>>,
+    AuthenticatedUser(user): AuthenticatedUser,
+    Path(name): Path<String>,
+    Json(_req): Json<ExtensionInteractiveLoginStartRequest>,
+) -> Result<Json<ExtensionInteractiveLoginResponse>, (StatusCode, String)> {
+    let ext_mgr = state.extension_manager.as_ref().ok_or((
+        StatusCode::NOT_IMPLEMENTED,
+        "Extension manager not available (secrets store required)".to_string(),
+    ))?;
+
+    match ext_mgr.start_interactive_login(&name, &user.user_id).await {
+        Ok(result) => Ok(Json(ExtensionInteractiveLoginResponse {
+            success: true,
+            status: result.status,
+            message: result.message,
+            session_id: Some(result.session_id),
+            qr_code_url: result.qr_code_url,
+            instructions: result.instructions,
+            activated: None,
+        })),
+        Err(e) => Ok(Json(ExtensionInteractiveLoginResponse {
+            success: false,
+            status: "failed".to_string(),
+            message: e.to_string(),
+            session_id: None,
+            qr_code_url: None,
+            instructions: None,
+            activated: Some(false),
+        })),
+    }
+}
+
+async fn extensions_login_poll_handler(
+    State(state): State<Arc<GatewayState>>,
+    AuthenticatedUser(user): AuthenticatedUser,
+    Path(name): Path<String>,
+    Json(req): Json<ExtensionInteractiveLoginPollRequest>,
+) -> Result<Json<ExtensionInteractiveLoginResponse>, (StatusCode, String)> {
+    let ext_mgr = state.extension_manager.as_ref().ok_or((
+        StatusCode::NOT_IMPLEMENTED,
+        "Extension manager not available (secrets store required)".to_string(),
+    ))?;
+
+    match ext_mgr
+        .poll_interactive_login(&name, &req.session_id, &user.user_id)
+        .await
+    {
+        Ok(result) => {
+            if result.activated == Some(true) {
+                clear_auth_mode(&state, &user.user_id).await;
+                state.sse.broadcast_for_user(
+                    &user.user_id,
+                    AppEvent::AuthCompleted {
+                        extension_name: name.clone(),
+                        success: true,
+                        message: result.message.clone(),
+                    },
+                );
+            }
+
+            Ok(Json(ExtensionInteractiveLoginResponse {
+                success: result.status != "failed",
+                status: result.status,
+                message: result.message,
+                session_id: Some(result.session_id),
+                qr_code_url: result.qr_code_url,
+                instructions: None,
+                activated: result.activated,
+            }))
+        }
+        Err(e) => Ok(Json(ExtensionInteractiveLoginResponse {
+            success: false,
+            status: "failed".to_string(),
+            message: e.to_string(),
+            session_id: Some(req.session_id),
+            qr_code_url: None,
+            instructions: None,
+            activated: Some(false),
+        })),
+    }
+}
+
 async fn extensions_setup_submit_handler(
    State(state): State<Arc<GatewayState>>,
    AuthenticatedUser(user): AuthenticatedUser,
@@ -2948,12 +3041,13 @@ mod tests {
            tools: Vec::new(),
            needs_setup: true,
            has_auth: false,
+            requires_binding: true,
            installed: true,
            activation_error: None,
            version: None,
        };

-        let owner_bound = classify_wasm_channel_activation(&ext, false, true);
+        let owner_bound = classify_wasm_channel_activation(&ext, false, true, ext.requires_binding);
        if owner_bound != Some(ExtensionActivationStatus::Active) {
            return Err(format!(
                "owner-bound channel should be active, got {:?}",
@@ -2961,7 +3055,7 @@ mod tests {
            ));
        }

-        let unbound = classify_wasm_channel_activation(&ext, false, false);
+        let unbound = classify_wasm_channel_activation(&ext, false, false, ext.requires_binding);
        if unbound != Some(ExtensionActivationStatus::Pairing) {
            return Err(format!(
                "unbound channel should be pairing, got {:?}",
@@ -2972,6 +3066,36 @@ mod tests {
        Ok(())
    }

+    #[test]
+    fn test_wechat_active_channel_does_not_require_pairing_status() -> Result<(), String> {
+        let ext = InstalledExtension {
+            name: "wechat".to_string(),
+            kind: ExtensionKind::WasmChannel,
+            display_name: Some("WeChat".to_string()),
+            description: None,
+            url: None,
+            authenticated: true,
+            active: true,
+            tools: Vec::new(),
+            needs_setup: true,
+            has_auth: false,
+            requires_binding: false,
+            installed: true,
+            activation_error: None,
+            version: None,
+        };
+
+        let status = classify_wasm_channel_activation(&ext, false, false, ext.requires_binding);
+        if status != Some(ExtensionActivationStatus::Active) {
+            return Err(format!(
+                "wechat should be active after QR login, got {:?}",
+                status
+            ));
+        }
+
+        Ok(())
+    }
+
    #[test]
    fn test_channel_relay_activation_status_is_preserved() -> Result<(), String> {
        let relay = InstalledExtension {
@@ -2985,13 +3109,14 @@ mod tests {
            tools: Vec::new(),
            needs_setup: true,
            has_auth: false,
+            requires_binding: false,
            installed: true,
            activation_error: None,
            version: None,
        };

        let status = if relay.kind == crate::extensions::ExtensionKind::WasmChannel {
-            classify_wasm_channel_activation(&relay, false, false)
+            classify_wasm_channel_activation(&relay, false, false, relay.requires_binding)
        } else if relay.kind == crate::extensions::ExtensionKind::ChannelRelay {
            Some(if relay.active {
                ExtensionActivationStatus::Active
@@ -3211,6 +3336,293 @@ mod tests {
        }
    }

+    #[tokio::test]
+    async fn test_extensions_setup_returns_interactive_login_for_wechat() {
+        use axum::body::Body;
+        use tower::ServiceExt;
+
+        let secrets = test_secrets_store();
+        let (ext_mgr, _wasm_tools_dir, wasm_channels_dir) = test_ext_mgr(secrets);
+
+        std::fs::write(wasm_channels_dir.path().join("wechat.wasm"), b"\0asm fake")
+            .expect("write fake wechat wasm");
+        let caps = serde_json::json!({
+            "type": "channel",
+            "name": "wechat",
+            "setup": {
+                "required_secrets": [
+                    {"name": "wechat_bot_token", "prompt": "Connect WeChat"}
+                ]
+            }
+        });
+        std::fs::write(
+            wasm_channels_dir.path().join("wechat.capabilities.json"),
+            serde_json::to_string(&caps).expect("serialize wechat caps"),
+        )
+        .expect("write wechat capabilities");
+
+        let state = test_gateway_state(Some(ext_mgr));
+        let app = Router::new()
+            .route(
+                "/api/extensions/{name}/setup",
+                get(extensions_setup_handler),
+            )
+            .with_state(state);
+
+        let mut req = axum::http::Request::builder()
+            .method("GET")
+            .uri("/api/extensions/wechat/setup")
+            .body(Body::empty())
+            .expect("request");
+        req.extensions_mut().insert(UserIdentity {
+            user_id: "test".to_string(),
+            workspace_read_scopes: Vec::new(),
+        });
+
+        let resp = ServiceExt::<axum::http::Request<Body>>::oneshot(app, req)
+            .await
+            .expect("response");
+        assert_eq!(resp.status(), StatusCode::OK);
+
+        let body = axum::body::to_bytes(resp.into_body(), 1024 * 64)
+            .await
+            .expect("body");
+        let parsed: serde_json::Value = serde_json::from_slice(&body).expect("json response");
+
+        assert_eq!(parsed["name"], "wechat");
+        assert_eq!(parsed["interactive_login"]["method"], "qr_code");
+        assert_eq!(
+            parsed["interactive_login"]["button_label"],
+            "Connect WeChat"
+        );
+        assert_eq!(parsed["secrets"], serde_json::json!([]));
+        assert_eq!(parsed["fields"], serde_json::json!([]));
+    }
+
+    #[cfg(feature = "libsql")]
+    #[tokio::test]
+    async fn test_extensions_wechat_login_poll_broadcasts_auth_completed_and_activates() {
+        use axum::body::Body;
+        use tokio::time::{Duration, timeout};
+        use tower::ServiceExt;
+
+        let secrets = test_secrets_store();
+        let (ext_mgr, _wasm_tools_dir, wasm_channels_dir, db, _db_tmp) =
+            test_ext_mgr_with_db(secrets.clone()).await;
+
+        std::fs::write(wasm_channels_dir.path().join("wechat.wasm"), b"\0asm fake")
+            .expect("write fake wechat wasm");
+        let caps = serde_json::json!({
+            "type": "channel",
+            "name": "wechat",
+            "setup": {
+                "required_secrets": [
+                    {"name": "wechat_bot_token", "prompt": "Connect WeChat"}
+                ]
+            },
+            "capabilities": {
+                "channel": {
+                    "allowed_paths": ["/webhook/wechat"]
+                }
+            },
+            "config": {
+                "base_url": "https://ilinkai.weixin.qq.com",
+                "bot_type": "3"
+            }
+        });
+        std::fs::write(
+            wasm_channels_dir.path().join("wechat.capabilities.json"),
+            serde_json::to_string(&caps).expect("serialize wechat caps"),
+        )
+        .expect("write wechat capabilities");
+
+        let channel_manager = Arc::new(crate::channels::ChannelManager::new());
+        let runtime = Arc::new(
+            crate::channels::wasm::WasmChannelRuntime::new(
+                crate::channels::wasm::WasmChannelRuntimeConfig::for_testing(),
+            )
+            .expect("runtime"),
+        );
+        let pairing_store = Arc::new(crate::pairing::PairingStore::new());
+        let router = Arc::new(crate::channels::wasm::WasmChannelRouter::new());
+        ext_mgr
+            .set_channel_runtime(
+                Arc::clone(&channel_manager),
+                Arc::clone(&runtime),
+                Arc::clone(&pairing_store),
+                Arc::clone(&router),
+                std::collections::HashMap::new(),
+            )
+            .await;
+        ext_mgr
+            .set_test_wasm_channel_loader(Arc::new({
+                let runtime = Arc::clone(&runtime);
+                let pairing_store = Arc::clone(&pairing_store);
+                move |name| {
+                    Ok(make_test_loaded_channel(
+                        Arc::clone(&runtime),
+                        name,
+                        Arc::clone(&pairing_store),
+                    ))
+                }
+            }))
+            .await;
+        ext_mgr
+            .set_test_wechat_login_starter(Arc::new(|user_id, base_url, bot_type| {
+                Ok((
+                    crate::extensions::wechat_login::PendingWechatLogin {
+                        user_id: user_id.to_string(),
+                        session_id: "wechat-session-42".to_string(),
+                        qrcode: "qr-42".to_string(),
+                        qr_code_url: "https://qr.example/42".to_string(),
+                        started_at: std::time::Instant::now(),
+                        base_url: base_url.to_string(),
+                        bot_type: bot_type.to_string(),
+                        refresh_count: 0,
+                    },
+                    crate::extensions::InteractiveLoginStartResult {
+                        session_id: "wechat-session-42".to_string(),
+                        status: "pending".to_string(),
+                        message: "Open the WeChat QR page to continue.".to_string(),
+                        qr_code_url: Some("https://qr.example/42".to_string()),
+                        instructions: Some(
+                            "Keep this window open while you scan and confirm on your phone."
+                                .to_string(),
+                        ),
+                    },
+                ))
+            }))
+            .await;
+        ext_mgr
+            .set_test_wechat_login_poller(Arc::new(|session| {
+                if session.session_id != "wechat-session-42" {
+                    return Err(crate::extensions::ExtensionError::Other(format!(
+                        "unexpected session id: {}",
+                        session.session_id
+                    )));
+                }
+
+                Ok(
+                    crate::extensions::wechat_login::WechatLoginPollOutcome::Confirmed(
+                        crate::extensions::wechat_login::ConfirmedWechatLogin {
+                            bot_token: "wechat-token-42".to_string(),
+                            base_url: Some("https://wechat.example".to_string()),
+                            ilink_bot_id: "wx-bot-42".to_string(),
+                        },
+                    ),
+                )
+            }))
+            .await;
+
+        let state = test_gateway_state(Some(ext_mgr.clone()));
+        let mut receiver = state.sse.sender().subscribe();
+        let app = Router::new()
+            .route(
+                "/api/extensions/{name}/login/start",
+                post(extensions_login_start_handler),
+            )
+            .route(
+                "/api/extensions/{name}/login/poll",
+                post(extensions_login_poll_handler),
+            )
+            .with_state(state);
+
+        let mut start_req = axum::http::Request::builder()
+            .method("POST")
+            .uri("/api/extensions/wechat/login/start")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{"force":true}"#))
+            .expect("start request");
+        start_req.extensions_mut().insert(UserIdentity {
+            user_id: "test".to_string(),
+            workspace_read_scopes: Vec::new(),
+        });
+
+        let start_resp = ServiceExt::<axum::http::Request<Body>>::oneshot(app.clone(), start_req)
+            .await
+            .expect("start response");
+        assert_eq!(start_resp.status(), StatusCode::OK);
+        let start_body = axum::body::to_bytes(start_resp.into_body(), 1024 * 64)
+            .await
+            .expect("start body");
+        let start_json: serde_json::Value =
+            serde_json::from_slice(&start_body).expect("start json response");
+        assert_eq!(start_json["success"], serde_json::Value::Bool(true));
+        assert_eq!(start_json["status"], "pending");
+        assert_eq!(start_json["session_id"], "wechat-session-42");
+        assert_eq!(start_json["qr_code_url"], "https://qr.example/42");
+
+        let mut poll_req = axum::http::Request::builder()
+            .method("POST")
+            .uri("/api/extensions/wechat/login/poll")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{"session_id":"wechat-session-42"}"#))
+            .expect("poll request");
+        poll_req.extensions_mut().insert(UserIdentity {
+            user_id: "test".to_string(),
+            workspace_read_scopes: Vec::new(),
+        });
+
+        let poll_resp = ServiceExt::<axum::http::Request<Body>>::oneshot(app, poll_req)
+            .await
+            .expect("poll response");
+        assert_eq!(poll_resp.status(), StatusCode::OK);
+        let poll_body = axum::body::to_bytes(poll_resp.into_body(), 1024 * 64)
+            .await
+            .expect("poll body");
+        let poll_json: serde_json::Value =
+            serde_json::from_slice(&poll_body).expect("poll json response");
+        assert_eq!(poll_json["success"], serde_json::Value::Bool(true));
+        assert_eq!(poll_json["status"], "succeeded");
+        assert_eq!(poll_json["activated"], serde_json::Value::Bool(true));
+        assert!(
+            poll_json["message"]
+                .as_str()
+                .unwrap_or_default()
+                .contains("WeChat connected as wx-bot-42"),
+            "unexpected poll message: {poll_json:?}"
+        );
+
+        let auth_completed = timeout(Duration::from_secs(1), async {
+            loop {
+                match receiver.recv().await {
+                    Ok(scoped) => match scoped.event {
+                        crate::channels::web::types::AppEvent::AuthCompleted {
+                            extension_name,
+                            success,
+                            message,
+                        } => break (extension_name, success, message),
+                        _ => continue,
+                    },
+                    Err(error) => panic!("expected auth_completed event, got recv error: {error}"),
+                }
+            }
+        })
+        .await
+        .expect("timed out waiting for auth_completed");
+        assert_eq!(auth_completed.0, "wechat");
+        assert!(auth_completed.1);
+        assert!(auth_completed.2.contains("WeChat connected as wx-bot-42"));
+
+        assert!(
+            secrets
+                .exists("test", "wechat_bot_token")
+                .await
+                .expect("check wechat secret"),
+            "wechat token should be stored after successful poll"
+        );
+        assert!(
+            channel_manager.get_channel("wechat").await.is_some(),
+            "wechat should be hot-added after successful poll"
+        );
+        assert_eq!(
+            db.get_setting("test", "extensions.wechat.base_url")
+                .await
+                .expect("get wechat base_url setting"),
+            Some(serde_json::json!("https://wechat.example"))
+        );
+    }
+
    #[tokio::test]
    async fn test_extensions_setup_submit_returns_failure_when_not_activated() {
        use axum::body::Body;
@@ -3434,6 +3846,10 @@ mod tests {
            csp_str.contains("object-src 'none'"),
            "CSP must contain object-src 'none'"
        );
+        assert!(
+            csp_str.contains("img-src 'self' data: https://liteapp.weixin.qq.com"),
+            "CSP must allow WeChat QR images from liteapp.weixin.qq.com"
+        );
        assert!(
            csp_str.contains("frame-ancestors 'none'"),
            "CSP must contain frame-ancestors 'none'"
@@ -4191,6 +4607,66 @@ mod tests {
        (ext_mgr, wasm_tools_dir, wasm_channels_dir)
    }

+    #[cfg(feature = "libsql")]
+    async fn test_ext_mgr_with_db(
+        secrets: Arc<dyn crate::secrets::SecretsStore + Send + Sync>,
+    ) -> (
+        Arc<ExtensionManager>,
+        tempfile::TempDir,
+        tempfile::TempDir,
+        Arc<dyn crate::db::Database>,
+        tempfile::TempDir,
+    ) {
+        let tool_registry = Arc::new(ToolRegistry::new());
+        let mcp_sm = Arc::new(crate::tools::mcp::session::McpSessionManager::new());
+        let mcp_pm = Arc::new(crate::tools::mcp::process::McpProcessManager::new());
+        let wasm_tools_dir = tempfile::tempdir().expect("temp wasm tools dir");
+        let wasm_channels_dir = tempfile::tempdir().expect("temp wasm channels dir");
+        let (db, db_tmp) = crate::testing::test_db().await;
+        let ext_mgr = Arc::new(ExtensionManager::new(
+            mcp_sm,
+            mcp_pm,
+            secrets,
+            tool_registry,
+            None,
+            None,
+            wasm_tools_dir.path().to_path_buf(),
+            wasm_channels_dir.path().to_path_buf(),
+            None,
+            "test".to_string(),
+            Some(db.clone()),
+            vec![],
+        ));
+        (ext_mgr, wasm_tools_dir, wasm_channels_dir, db, db_tmp)
+    }
+
+    #[cfg(feature = "libsql")]
+    fn make_test_loaded_channel(
+        runtime: Arc<crate::channels::wasm::WasmChannelRuntime>,
+        name: &str,
+        pairing_store: Arc<crate::pairing::PairingStore>,
+    ) -> crate::channels::wasm::LoadedChannel {
+        let prepared = Arc::new(crate::channels::wasm::PreparedChannelModule::for_testing(
+            name,
+            format!("Mock channel: {name}"),
+        ));
+        let capabilities = crate::channels::wasm::ChannelCapabilities::for_channel(name)
+            .with_path(format!("/webhook/{name}"));
+
+        crate::channels::wasm::LoadedChannel {
+            channel: crate::channels::wasm::WasmChannel::new(
+                runtime,
+                prepared,
+                capabilities,
+                "default",
+                "{}".to_string(),
+                pairing_store,
+                None,
+            ),
+            capabilities_file: None,
+        }
+    }
+
    #[tokio::test]
    async fn test_relay_oauth_callback_missing_state_param() {
        use axum::body::Body;
@@ -3056,16 +3056,17 @@ function showConfigureModal(name) {
    .then((setup) => {
      const secrets = Array.isArray(setup.secrets) ? setup.secrets : [];
      const setupFields = Array.isArray(setup.fields) ? setup.fields : [];
-      if (secrets.length === 0 && setupFields.length === 0) {
-        showToast('No configuration needed for ' + name, 'info');
+      const interactiveLogin = setup.interactive_login || null;
+      if (secrets.length === 0 && setupFields.length === 0 && !interactiveLogin) {
+        showToast(I18n.t('extensions.noConfigNeeded', { name: name }), 'info');
        return;
      }
-      renderConfigureModal(name, secrets, setupFields);
+      renderConfigureModal(name, secrets, setupFields, interactiveLogin);
    })
-    .catch((err) => showToast('Failed to load setup: ' + err.message, 'error'));
+    .catch((err) => showToast(I18n.t('error.loadFailed', { message: err.message }), 'error'));
 }

-function renderConfigureModal(name, secrets, setupFields) {
+function renderConfigureModal(name, secrets, setupFields, interactiveLogin) {
  closeConfigureModal();
  const overlay = document.createElement('div');
  overlay.className = 'configure-overlay';
@@ -3091,6 +3092,13 @@ function renderConfigureModal(name, secrets, setupFields) {
    modal.appendChild(hint);
  }

+  if (interactiveLogin) {
+    const hint = document.createElement('div');
+    hint.className = 'configure-hint';
+    hint.textContent = interactiveLoginHintText(name, interactiveLogin);
+    modal.appendChild(hint);
+  }
+
  const form = document.createElement('div');
  form.className = 'configure-form';

@@ -3180,7 +3188,13 @@ function renderConfigureModal(name, secrets, setupFields) {
    fields.push({ kind: 'field', name: setupField.name, input: input });
  }

-  modal.appendChild(form);
+  if (fields.length > 0) {
+    modal.appendChild(form);
+  }
+
+  if (interactiveLogin) {
+    modal.appendChild(renderInteractiveLoginPanel(name));
+  }

  const error = document.createElement('div');
  error.className = 'configure-inline-error';
@@ -3195,11 +3209,23 @@ function renderConfigureModal(name, secrets, setupFields) {
  const actions = document.createElement('div');
  actions.className = 'configure-actions';

-  const submitBtn = document.createElement('button');
-  submitBtn.className = 'btn-ext activate';
-  submitBtn.textContent = I18n.t('config.save');
-  submitBtn.addEventListener('click', () => submitConfigureModal(name, fields));
-  actions.appendChild(submitBtn);
+  if (fields.length > 0) {
+    const submitBtn = document.createElement('button');
+    submitBtn.className = 'btn-ext activate';
+    submitBtn.textContent = I18n.t('config.save');
+    submitBtn.addEventListener('click', () => submitConfigureModal(name, fields));
+    actions.appendChild(submitBtn);
+  }
+
+  if (interactiveLogin) {
+    const loginBtn = document.createElement('button');
+    loginBtn.className = 'btn-ext activate';
+    loginBtn.dataset.defaultLabel = interactiveLoginDefaultLabel(name, interactiveLogin);
+    loginBtn.textContent = loginBtn.dataset.defaultLabel;
+    loginBtn.dataset.interactiveLogin = 'true';
+    loginBtn.addEventListener('click', () => startInteractiveLogin(name, overlay));
+    actions.appendChild(loginBtn);
+  }

  const cancelBtn = document.createElement('button');
  cancelBtn.className = 'btn-ext remove';
@@ -3211,7 +3237,200 @@ function renderConfigureModal(name, secrets, setupFields) {
  overlay.appendChild(modal);
  document.body.appendChild(overlay);

-  if (fields.length > 0) fields[0].input.focus();
+  if (fields.length > 0) {
+    fields[0].input.focus();
+  } else {
+    const loginBtn = overlay.querySelector('.configure-actions button[data-interactive-login="true"]');
+    if (loginBtn) loginBtn.focus();
+  }
+}
+
+function renderInteractiveLoginPanel(name) {
+  const panel = document.createElement('div');
+  panel.className = 'configure-qr-login';
+  panel.style.display = 'none';
+
+  const title = document.createElement('div');
+  title.className = 'configure-verification-title';
+  title.textContent =
+    name === 'wechat' ? I18n.t('config.wechatQrTitle') : I18n.t('auth.connect');
+  panel.appendChild(title);
+
+  const status = document.createElement('div');
+  status.className = 'configure-verification-instructions';
+  status.textContent = interactiveLoginStatusText(name, null);
+  status.dataset.qrStatus = 'true';
+  panel.appendChild(status);
+
+  const link = document.createElement('a');
+  link.className = 'configure-verification-link';
+  link.textContent =
+    name === 'wechat' ? I18n.t('config.wechatQrOpen') : I18n.t('auth.connect');
+  link.target = '_blank';
+  link.rel = 'noreferrer noopener';
+  link.style.display = 'none';
+  link.dataset.qrLink = 'true';
+  panel.appendChild(link);
+
+  return panel;
+}
+
+function interactiveLoginHintText(name, interactiveLogin) {
+  if (name === 'wechat') return I18n.t('config.wechatHint');
+  return (interactiveLogin && interactiveLogin.instructions) || '';
+}
+
+function interactiveLoginDefaultLabel(name, interactiveLogin) {
+  if (name === 'wechat') return I18n.t('config.wechatConnect');
+  return (interactiveLogin && interactiveLogin.button_label) || I18n.t('auth.connect');
+}
+
+function interactiveLoginWaitingLabel(name) {
+  if (name === 'wechat') return I18n.t('config.wechatWaiting');
+  return I18n.t('status.connecting');
+}
+
+function interactiveLoginStatusText(name, res) {
+  if (name !== 'wechat') return (res && res.message) || '';
+  if (!res) return I18n.t('config.wechatQrIntro');
+
+  switch (res.status) {
+    case 'pending':
+      return res.qr_code_url ? I18n.t('config.wechatQrReady') : I18n.t('config.wechatQrWaiting');
+    case 'scanned':
+      return I18n.t('config.wechatQrScanned');
+    case 'refreshed':
+      return I18n.t('config.wechatQrRefreshed');
+    case 'succeeded':
+      return I18n.t('config.wechatConnected');
+    case 'failed':
+      return res.message || I18n.t('config.wechatQrFailed');
+    default:
+      return res.message || I18n.t('config.wechatQrIntro');
+  }
+}
+
+function getInteractiveLoginButton(overlay) {
+  return overlay && overlay.querySelector('.configure-actions button[data-interactive-login="true"]');
+}
+
+function getInteractiveLoginPanel(overlay) {
+  return overlay && overlay.querySelector('.configure-qr-login');
+}
+
+function updateInteractiveLoginPanel(overlay, res) {
+  const panel = getInteractiveLoginPanel(overlay);
+  if (!panel) return;
+  const name = overlay && overlay.dataset ? overlay.dataset.extensionName : '';
+  const status = panel.querySelector('[data-qr-status="true"]');
+  const link = panel.querySelector('[data-qr-link="true"]');
+
+  panel.style.display = '';
+  if (status) {
+    if (name === 'wechat' && res.status === 'refreshed') {
+      status.textContent = I18n.t('config.wechatQrRefreshedHint');
+    } else {
+      status.textContent = interactiveLoginStatusText(name, res);
+    }
+  }
+
+  if (link && res.qr_code_url) {
+    link.href = res.qr_code_url;
+    link.style.display = '';
+  }
+}
+
+function setInteractiveLoginBusy(overlay, busy, label) {
+  const loginBtn = getInteractiveLoginButton(overlay);
+  if (!loginBtn) return;
+  loginBtn.disabled = !!busy;
+  loginBtn.textContent = label || loginBtn.dataset.defaultLabel || I18n.t('auth.connect');
+}
+
+function startInteractiveLogin(name, overlay) {
+  if (!overlay || !document.body.contains(overlay)) return;
+  clearConfigureInlineError(overlay);
+  setConfigureInlineStatus(
+    overlay,
+    name === 'wechat' ? I18n.t('config.wechatPreparingQr') : I18n.t('status.connecting'),
+  );
+  setInteractiveLoginBusy(overlay, true, interactiveLoginWaitingLabel(name));
+
+  apiFetch('/api/extensions/' + encodeURIComponent(name) + '/login/start', {
+    method: 'POST',
+    body: { force: true },
+  })
+    .then((res) => {
+      if (!overlay || !document.body.contains(overlay)) return;
+      if (!res.success || !res.session_id) {
+        setInteractiveLoginBusy(overlay, false);
+        setConfigureInlineError(
+          overlay,
+          res.message || I18n.t('config.interactiveLoginStartFailed'),
+        );
+        setConfigureInlineStatus(overlay, '');
+        return;
+      }
+
+      overlay.dataset.interactiveLoginSessionId = res.session_id;
+      updateInteractiveLoginPanel(overlay, res);
+      setConfigureInlineStatus(overlay, interactiveLoginStatusText(name, res));
+      pollInteractiveLogin(name, overlay, res.session_id);
+    })
+    .catch((err) => {
+      if (!overlay || !document.body.contains(overlay)) return;
+      setInteractiveLoginBusy(overlay, false);
+      setConfigureInlineError(
+        overlay,
+        err.message || I18n.t('config.interactiveLoginStartFailed'),
+      );
+      setConfigureInlineStatus(overlay, '');
+    });
+}
+
+function pollInteractiveLogin(name, overlay, sessionId) {
+  if (!overlay || !document.body.contains(overlay)) return;
+  if (overlay.dataset.interactiveLoginSessionId !== sessionId) return;
+
+  apiFetch('/api/extensions/' + encodeURIComponent(name) + '/login/poll', {
+    method: 'POST',
+    body: { session_id: sessionId },
+  })
+    .then((res) => {
+      if (!overlay || !document.body.contains(overlay)) return;
+      if (overlay.dataset.interactiveLoginSessionId !== sessionId) return;
+
+      updateInteractiveLoginPanel(overlay, res);
+      setConfigureInlineStatus(overlay, interactiveLoginStatusText(name, res));
+
+      if (res.status === 'pending' || res.status === 'scanned' || res.status === 'refreshed') {
+        if (res.status === 'refreshed') {
+          setInteractiveLoginBusy(overlay, true, interactiveLoginWaitingLabel(name));
+        }
+        window.setTimeout(function() {
+          pollInteractiveLogin(name, overlay, sessionId);
+        }, 0);
+        return;
+      }
+
+      if (res.success && res.activated) {
+        closeConfigureModal(name);
+        showToast(res.message || I18n.t('config.connectedSuccess', { name: name }), 'success');
+        refreshCurrentSettingsTab();
+        return;
+      }
+
+      setInteractiveLoginBusy(overlay, false);
+      setConfigureInlineError(overlay, res.message || I18n.t('config.interactiveLoginFailed'));
+      setConfigureInlineStatus(overlay, '');
+    })
+    .catch((err) => {
+      if (!overlay || !document.body.contains(overlay)) return;
+      if (overlay.dataset.interactiveLoginSessionId !== sessionId) return;
+      setInteractiveLoginBusy(overlay, false);
+      setConfigureInlineError(overlay, err.message || I18n.t('config.interactiveLoginFailed'));
+      setConfigureInlineStatus(overlay, '');
+    });
 }

 function renderTelegramVerificationChallenge(overlay, verification) {
@@ -3517,9 +3736,9 @@ function renderWasmChannelStepper(ext) {
  var status = ext.activation_status || 'installed';

  var steps = [
-    { label: 'Installed', key: 'installed' },
-    { label: 'Configured', key: 'configured' },
-    { label: status === 'pairing' ? 'Awaiting Pairing' : 'Active', key: 'active' },
+    { label: I18n.t('status.installed'), key: 'installed' },
+    { label: I18n.t('status.configured'), key: 'configured' },
+    { label: status === 'pairing' ? I18n.t('status.pairingShort') : I18n.t('status.active'), key: 'active' },
  ];

  var reachedIdx;
@@ -54,7 +54,9 @@ I18n.register('en', {
  'status.restart': 'Restart',
  'status.active': 'Active',
  'status.installed': 'Installed',
+  'status.configured': 'Configured',
  'status.awaitingPairing': 'Awaiting Pairing',
+  'status.pairingShort': 'Pairing',
  
  // Dashboard
  'dashboard.connections': 'Connections',
@@ -359,6 +361,23 @@ I18n.register('en', {
  'config.telegramStartOver': 'Start over',
  'config.telegramStartOverHint': 'Telegram verification did not complete. Click Start over to generate a new code and try again.',
  'config.telegramOpenBot': 'Open bot in Telegram',
+  'config.wechatHint': 'Open the WeChat QR page in a new tab, then scan and confirm in WeChat.',
+  'config.wechatConnect': 'Open QR Page',
+  'config.wechatWaiting': 'Waiting for scan...',
+  'config.wechatPreparingQr': 'Preparing WeChat QR page...',
+  'config.wechatQrTitle': 'Open WeChat QR Page',
+  'config.wechatQrOpen': 'Open QR Page',
+  'config.wechatQrIntro': 'The QR flow opens in a separate tab.',
+  'config.wechatQrReady': 'QR page is ready. Open it in a new tab, then scan and confirm in WeChat.',
+  'config.wechatQrWaiting': 'Preparing the WeChat QR page...',
+  'config.wechatQrScanned': 'QR scanned. Confirm the login in WeChat.',
+  'config.wechatQrRefreshed': 'QR page refreshed.',
+  'config.wechatQrRefreshedHint': 'The previous QR page expired. Open the new page and scan again.',
+  'config.wechatConnected': 'WeChat connected.',
+  'config.wechatQrFailed': 'WeChat connection failed.',
+  'config.interactiveLoginStartFailed': 'Failed to start interactive login',
+  'config.interactiveLoginFailed': 'Interactive login failed',
+  'config.connectedSuccess': '{name} connected successfully',
  'config.optional': ' (optional)',
  'config.alreadySet': '(already set — leave empty to keep)',
  'config.alreadyConfigured': 'Already configured',
@@ -54,7 +54,9 @@ I18n.register('zh-CN', {
  'status.restart': '重启',
  'status.active': '已激活',
  'status.installed': '已安装',
+  'status.configured': '已配置',
  'status.awaitingPairing': '等待配对',
+  'status.pairingShort': '配对中',
  
  // 仪表盘
  'dashboard.connections': '连接数',
@@ -358,6 +360,24 @@ I18n.register('zh-CN', {
  'config.telegramCommandLabel': '请在 Telegram 中发送：',
  'config.telegramStartOver': '重新开始',
  'config.telegramStartOverHint': 'Telegram 验证未完成。点击“重新开始”以生成新的验证码并重试。',
+  'config.telegramOpenBot': '在 Telegram 中打开机器人',
+  'config.wechatHint': '在新标签页打开微信扫码页，然后在微信里扫码并确认。',
+  'config.wechatConnect': '打开扫码页',
+  'config.wechatWaiting': '等待扫码中...',
+  'config.wechatPreparingQr': '正在准备微信扫码页...',
+  'config.wechatQrTitle': '打开微信扫码页',
+  'config.wechatQrOpen': '打开扫码页',
+  'config.wechatQrIntro': '扫码流程会在新标签页中打开。',
+  'config.wechatQrReady': '扫码页已就绪。请在新标签页打开后，用微信扫码并确认。',
+  'config.wechatQrWaiting': '正在准备微信扫码页...',
+  'config.wechatQrScanned': '已扫码，请在微信中确认登录。',
+  'config.wechatQrRefreshed': '扫码页已刷新。',
+  'config.wechatQrRefreshedHint': '之前的扫码页已过期，请打开新页面重新扫码。',
+  'config.wechatConnected': '微信已连接。',
+  'config.wechatQrFailed': '微信连接失败。',
+  'config.interactiveLoginStartFailed': '启动交互式登录失败',
+  'config.interactiveLoginFailed': '交互式登录失败',
+  'config.connectedSuccess': '{name} 连接成功',
  'config.optional': '（可选）',
  'config.alreadySet': '（已设置 — 留空以保持不变）',
  'config.alreadyConfigured': '已配置',
@@ -2961,15 +2961,18 @@ body {
 /* WASM channel setup stepper */
 .ext-stepper {
  display: flex;
-  align-items: center;
+  align-items: flex-start;
  gap: 0;
  margin: 8px 0 4px;
+  min-width: 0;
 }

 .stepper-step {
  display: flex;
  align-items: center;
-  gap: 4px;
+  gap: 6px;
+  min-width: 0;
+  flex: 1 1 0;
 }

 .stepper-circle {
@@ -2986,7 +2989,10 @@ body {

 .stepper-label {
  font-size: var(--text-xs);
-  white-space: nowrap;
+  white-space: normal;
+  overflow-wrap: anywhere;
+  line-height: 1.25;
+  min-width: 0;
 }

 .stepper-step.completed .stepper-circle {
@@ -3043,7 +3049,8 @@ body {
  height: 2px;
  background: var(--border);
  margin: 0 4px;
-  flex-shrink: 0;
+  flex: 0 0 20px;
+  align-self: center;
 }

 .stepper-connector.completed {
@@ -3238,6 +3245,17 @@ body {
  border: 1px solid var(--border);
 }

+.configure-qr-login {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  margin: 16px 0 0 0;
+  padding: 12px;
+  border-radius: 8px;
+  background: var(--bg-secondary);
+  border: 1px solid var(--border);
+}
+
 .configure-verification-title {
  font-size: var(--text-sm);
  font-weight: 600;
@@ -3262,14 +3280,29 @@ body {
 }

 .configure-verification-link {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
  width: fit-content;
+  padding: 10px 14px;
+  border-radius: 10px;
+  border: 1px solid var(--accent);
+  background: var(--accent-subtle);
  color: var(--accent, var(--text-link, #4ea3ff));
  font-size: var(--text-sm);
+  font-weight: 600;
  text-decoration: none;
+  transition: background var(--transition-fast), transform 150ms var(--ease-spring);
 }

 .configure-verification-link:hover {
-  text-decoration: underline;
+  background: var(--badge-sandbox-bg);
+  transform: translateY(-1px);
+  text-decoration: none;
+}
+
+.configure-verification-link:active {
+  transform: scale(0.98);
 }

 .configure-inline-error {
@@ -306,6 +306,7 @@ pub fn classify_wasm_channel_activation(
    ext: &crate::extensions::InstalledExtension,
    has_paired: bool,
    has_owner_binding: bool,
+    requires_binding: bool,
 ) -> Option<ExtensionActivationStatus> {
    if ext.kind != crate::extensions::ExtensionKind::WasmChannel {
        return None;
@@ -316,7 +317,7 @@ pub fn classify_wasm_channel_activation(
    } else if !ext.authenticated {
        ExtensionActivationStatus::Installed
    } else if ext.active {
-        if has_paired || has_owner_binding {
+        if !requires_binding || has_paired || has_owner_binding {
            ExtensionActivationStatus::Active
        } else {
            ExtensionActivationStatus::Pairing
@@ -386,6 +387,8 @@ pub struct ExtensionSetupResponse {
    pub kind: String,
    pub secrets: Vec<SecretFieldInfo>,
    pub fields: Vec<SetupFieldInfo>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub interactive_login: Option<crate::extensions::InteractiveLoginInfo>,
 }

 #[derive(Debug, Serialize)]
@@ -418,6 +421,32 @@ pub struct ExtensionSetupRequest {
    pub fields: std::collections::HashMap<String, String>,
 }

+#[derive(Debug, Deserialize)]
+pub struct ExtensionInteractiveLoginStartRequest {
+    #[serde(default)]
+    pub force: bool,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct ExtensionInteractiveLoginPollRequest {
+    pub session_id: String,
+}
+
+#[derive(Debug, Serialize)]
+pub struct ExtensionInteractiveLoginResponse {
+    pub success: bool,
+    pub status: String,
+    pub message: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub session_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub qr_code_url: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub instructions: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub activated: Option<bool>,
+}
+
 #[derive(Debug, Serialize)]
 pub struct ActionResponse {
    pub success: bool,
@@ -17,9 +17,16 @@ use crate::channels::wasm::{
 use crate::channels::{ChannelManager, OutgoingResponse};
 use crate::extensions::discovery::OnlineDiscovery;
 use crate::extensions::registry::ExtensionRegistry;
+use crate::extensions::wechat_login::{
+    PendingWechatLogin, WECHAT_BASE_URL_SETTING_PATH, WECHAT_CHANNEL_NAME, WECHAT_DEFAULT_BASE_URL,
+    WECHAT_DEFAULT_BOT_TYPE, WechatLoginPollOutcome,
+    interactive_login_info as wechat_interactive_login_info, poll_login as poll_wechat_login,
+    purge_expired_logins as purge_expired_wechat_logins, start_login as start_wechat_login,
+};
 use crate::extensions::{
    ActivateResult, AuthResult, ConfigureResult, ExtensionError, ExtensionKind, ExtensionSource,
-    InstallResult, InstalledExtension, RegistryEntry, ResultSource, SearchResult, ToolAuthState,
+    InstallResult, InstalledExtension, InteractiveLoginInfo, InteractiveLoginPollResult,
+    InteractiveLoginStartResult, RegistryEntry, ResultSource, SearchResult, ToolAuthState,
    UpgradeOutcome, UpgradeResult, VerificationChallenge,
 };
 use crate::hooks::HookRegistry;
@@ -95,6 +102,7 @@ struct ChannelRuntimeState {
 pub struct ExtensionSetupSchema {
    pub secrets: Vec<crate::channels::web::types::SecretFieldInfo>,
    pub fields: Vec<crate::channels::web::types::SetupFieldInfo>,
+    pub interactive_login: Option<InteractiveLoginInfo>,
 }

 /// Only these global (non-namespaced) setting paths may be written by extension
@@ -112,6 +120,20 @@ type TestWasmChannelLoader =
 #[cfg(test)]
 type TestTelegramBindingResolver =
    Arc<dyn Fn(&str, Option<i64>) -> Result<TelegramBindingResult, ExtensionError> + Send + Sync>;
+#[cfg(test)]
+type TestWechatLoginStarter = Arc<
+    dyn Fn(
+            &str,
+            &str,
+            &str,
+        ) -> Result<(PendingWechatLogin, InteractiveLoginStartResult), ExtensionError>
+        + Send
+        + Sync,
+>;
+#[cfg(test)]
+type TestWechatLoginPoller = Arc<
+    dyn Fn(&mut PendingWechatLogin) -> Result<WechatLoginPollOutcome, ExtensionError> + Send + Sync,
+>;

 const TELEGRAM_OWNER_BIND_TIMEOUT_SECS: u64 = 120;
 const TELEGRAM_OWNER_BIND_CHALLENGE_TTL_SECS: u64 = 300;
@@ -430,10 +452,15 @@ pub struct ExtensionManager {
    /// Set by the web gateway at startup via `enable_gateway_mode()`.
    gateway_base_url: RwLock<Option<String>>,
    pending_telegram_verification: RwLock<HashMap<String, PendingTelegramVerificationChallenge>>,
+    pending_wechat_logins: RwLock<HashMap<String, PendingWechatLogin>>,
    #[cfg(test)]
    test_wasm_channel_loader: RwLock<Option<TestWasmChannelLoader>>,
    #[cfg(test)]
    test_telegram_binding_resolver: RwLock<Option<TestTelegramBindingResolver>>,
+    #[cfg(test)]
+    test_wechat_login_starter: RwLock<Option<TestWechatLoginStarter>>,
+    #[cfg(test)]
+    test_wechat_login_poller: RwLock<Option<TestWechatLoginPoller>>,
 }

 /// Sanitize a URL for logging by removing query parameters and credentials.
@@ -543,15 +570,20 @@ impl ExtensionManager {
            gateway_mode: std::sync::atomic::AtomicBool::new(false),
            gateway_base_url: RwLock::new(None),
            pending_telegram_verification: RwLock::new(HashMap::new()),
+            pending_wechat_logins: RwLock::new(HashMap::new()),
            #[cfg(test)]
            test_wasm_channel_loader: RwLock::new(None),
            #[cfg(test)]
            test_telegram_binding_resolver: RwLock::new(None),
+            #[cfg(test)]
+            test_wechat_login_starter: RwLock::new(None),
+            #[cfg(test)]
+            test_wechat_login_poller: RwLock::new(None),
        }
    }

    #[cfg(test)]
-    async fn set_test_wasm_channel_loader(&self, loader: TestWasmChannelLoader) {
+    pub(crate) async fn set_test_wasm_channel_loader(&self, loader: TestWasmChannelLoader) {
        *self.test_wasm_channel_loader.write().await = Some(loader);
    }

@@ -560,6 +592,16 @@ impl ExtensionManager {
        *self.test_telegram_binding_resolver.write().await = Some(resolver);
    }

+    #[cfg(test)]
+    pub(crate) async fn set_test_wechat_login_starter(&self, starter: TestWechatLoginStarter) {
+        *self.test_wechat_login_starter.write().await = Some(starter);
+    }
+
+    #[cfg(test)]
+    pub(crate) async fn set_test_wechat_login_poller(&self, poller: TestWechatLoginPoller) {
+        *self.test_wechat_login_poller.write().await = Some(poller);
+    }
+
    #[cfg(test)]
    pub(crate) async fn set_test_telegram_pending_verification(
        &self,
@@ -841,6 +883,16 @@ impl ExtensionManager {
            overrides.insert("bot_username".to_string(), serde_json::json!(username));
        }

+        if name == WECHAT_CHANNEL_NAME
+            && let Some(store) = self.store.as_ref()
+            && let Ok(Some(serde_json::Value::String(base_url))) = store
+                .get_setting(&self.user_id, WECHAT_BASE_URL_SETTING_PATH)
+                .await
+            && !base_url.trim().is_empty()
+        {
+            overrides.insert("base_url".to_string(), serde_json::json!(base_url));
+        }
+
        overrides
    }

@@ -1393,6 +1445,7 @@ impl ExtensionManager {
                            tools,
                            needs_setup: false,
                            has_auth: false,
+                            requires_binding: false,
                            installed: true,
                            activation_error: None,
                            version: None,
@@ -1444,6 +1497,7 @@ impl ExtensionManager {
                            tools: if active { vec![name] } else { Vec::new() },
                            needs_setup: auth_state == ToolAuthState::NeedsSetup,
                            has_auth: auth_state != ToolAuthState::NoAuth,
+                            requires_binding: false,
                            installed: true,
                            activation_error: None,
                            version,
@@ -1473,20 +1527,25 @@ impl ExtensionManager {
                            .get_with_kind(&name, Some(ExtensionKind::WasmChannel))
                            .await;
                        let display_name = registry_entry.as_ref().map(|e| e.display_name.clone());
-                        let version = if let Some(ref cap_path) = discovered.capabilities_path {
-                            tokio::fs::read(cap_path)
-                                .await
-                                .ok()
-                                .and_then(|bytes| {
-                                    crate::channels::wasm::ChannelCapabilitiesFile::from_bytes(
-                                        &bytes,
-                                    )
+                        let (version, requires_binding) =
+                            if let Some(ref cap_path) = discovered.capabilities_path {
+                                tokio::fs::read(cap_path)
+                                    .await
                                    .ok()
-                                })
-                                .and_then(|cap| cap.version)
-                        } else {
-                            None
-                        };
+                                    .and_then(|bytes| {
+                                        crate::channels::wasm::ChannelCapabilitiesFile::from_bytes(
+                                            &bytes,
+                                        )
+                                        .ok()
+                                    })
+                                    .map(|cap| {
+                                        let requires_binding = cap.requires_binding();
+                                        (cap.version, requires_binding)
+                                    })
+                            } else {
+                                None
+                            }
+                            .unwrap_or((None, false));
                        let version =
                            version.or_else(|| registry_entry.and_then(|e| e.version.clone()));
                        extensions.push(InstalledExtension {
@@ -1500,6 +1559,7 @@ impl ExtensionManager {
                            tools: Vec::new(),
                            needs_setup: auth_state == ToolAuthState::NeedsSetup,
                            has_auth: auth_state != ToolAuthState::NoAuth,
+                            requires_binding,
                            installed: true,
                            activation_error,
                            version,
@@ -1538,6 +1598,7 @@ impl ExtensionManager {
                    tools: Vec::new(),
                    needs_setup: false,
                    has_auth: true,
+                    requires_binding: false,
                    installed: true,
                    activation_error,
                    version: None,
@@ -1572,6 +1633,7 @@ impl ExtensionManager {
                    tools: Vec::new(),
                    needs_setup: false,
                    has_auth: false,
+                    requires_binding: false,
                    installed: false,
                    activation_error: None,
                    version: entry.version,
@@ -3630,6 +3692,15 @@ impl ExtensionManager {
            return Ok(AuthResult::authenticated(name, ExtensionKind::WasmChannel));
        }

+        if name == WECHAT_CHANNEL_NAME {
+            return Ok(AuthResult::awaiting_token(
+                name,
+                ExtensionKind::WasmChannel,
+                "Open the WeChat channel setup to scan a QR code and connect it.".to_string(),
+                cap_file.setup.setup_url.clone(),
+            ));
+        }
+
        // Prompt for the first missing secret
        let secret = &missing[0];
        Ok(AuthResult::awaiting_token(
@@ -4119,6 +4190,10 @@ impl ExtensionManager {

        let webhook_path = format!("/webhook/{}", name);
        let existing_channel = match router.get_channel_for_path(&webhook_path).await {
+            Some(ch) => Some(ch),
+            None => router.get_channel_by_name(name).await,
+        };
+        let existing_channel = match existing_channel {
            Some(ch) => ch,
            None => {
                return Ok(ActivateResult {
@@ -4766,6 +4841,21 @@ impl ExtensionManager {
            }
            !expired
        });
+
+        let mut wechat_logins = self.pending_wechat_logins.write().await;
+        purge_expired_wechat_logins(&mut wechat_logins);
+    }
+
+    fn interactive_login_info_for_extension(
+        name: &str,
+        kind: ExtensionKind,
+    ) -> Option<InteractiveLoginInfo> {
+        match (kind, name) {
+            (ExtensionKind::WasmChannel, WECHAT_CHANNEL_NAME) => {
+                Some(wechat_interactive_login_info())
+            }
+            _ => None,
+        }
    }

    /// Get the setup schema for an extension (secret/text fields and their status).
@@ -4785,6 +4875,10 @@ impl ExtensionManager {
                    return Ok(ExtensionSetupSchema {
                        secrets: Vec::new(),
                        fields: Vec::new(),
+                        interactive_login: Self::interactive_login_info_for_extension(
+                            name,
+                            ExtensionKind::WasmChannel,
+                        ),
                    });
                }
                let cap_bytes = tokio::fs::read(&cap_path)
@@ -4794,6 +4888,14 @@ impl ExtensionManager {
                    crate::channels::wasm::ChannelCapabilitiesFile::from_bytes(&cap_bytes)
                        .map_err(|e| ExtensionError::Other(e.to_string()))?;

+                if name == WECHAT_CHANNEL_NAME {
+                    return Ok(ExtensionSetupSchema {
+                        secrets: Vec::new(),
+                        fields: Vec::new(),
+                        interactive_login: Some(wechat_interactive_login_info()),
+                    });
+                }
+
                let mut secrets = Vec::new();
                for secret in &cap_file.setup.required_secrets {
                    let provided = self
@@ -4814,6 +4916,7 @@ impl ExtensionManager {
                Ok(ExtensionSetupSchema {
                    secrets,
                    fields: Vec::new(),
+                    interactive_login: None,
                })
            }
            ExtensionKind::WasmTool => {
@@ -4821,6 +4924,7 @@ impl ExtensionManager {
                    return Ok(ExtensionSetupSchema {
                        secrets: Vec::new(),
                        fields: Vec::new(),
+                        interactive_login: None,
                    });
                };

@@ -4860,7 +4964,11 @@ impl ExtensionManager {
                        });
                    }
                }
-                Ok(ExtensionSetupSchema { secrets, fields })
+                Ok(ExtensionSetupSchema {
+                    secrets,
+                    fields,
+                    interactive_login: None,
+                })
            }
            ExtensionKind::ChannelRelay => {
                let relay_url_key = format!("extensions.{name}.relay_url");
@@ -4895,15 +5003,214 @@ impl ExtensionManager {
                        provided: current_url.is_some(),
                        input_type: crate::tools::wasm::ToolSetupFieldInputType::Text,
                    }],
+                    interactive_login: None,
                })
            }
            _ => Ok(ExtensionSetupSchema {
                secrets: Vec::new(),
                fields: Vec::new(),
+                interactive_login: None,
            }),
        }
    }

+    async fn resolve_wechat_base_url(&self, user_id: &str) -> String {
+        if let Some(store) = &self.store
+            && let Ok(Some(serde_json::Value::String(value))) = store
+                .get_setting(user_id, WECHAT_BASE_URL_SETTING_PATH)
+                .await
+        {
+            let trimmed = value.trim();
+            if !trimmed.is_empty() {
+                return trimmed.to_string();
+            }
+        }
+
+        let cap_path = self
+            .wasm_channels_dir
+            .join(format!("{}.capabilities.json", WECHAT_CHANNEL_NAME));
+        if let Ok(cap_bytes) = tokio::fs::read(&cap_path).await
+            && let Ok(cap_file) =
+                crate::channels::wasm::ChannelCapabilitiesFile::from_bytes(&cap_bytes)
+            && let Some(value) = cap_file
+                .config
+                .get("base_url")
+                .and_then(|value| value.as_str())
+        {
+            let trimmed = value.trim();
+            if !trimmed.is_empty() {
+                return trimmed.to_string();
+            }
+        }
+
+        WECHAT_DEFAULT_BASE_URL.to_string()
+    }
+
+    async fn resolve_wechat_bot_type(&self) -> String {
+        let cap_path = self
+            .wasm_channels_dir
+            .join(format!("{}.capabilities.json", WECHAT_CHANNEL_NAME));
+        if let Ok(cap_bytes) = tokio::fs::read(&cap_path).await
+            && let Ok(cap_file) =
+                crate::channels::wasm::ChannelCapabilitiesFile::from_bytes(&cap_bytes)
+            && let Some(value) = cap_file
+                .config
+                .get("bot_type")
+                .and_then(|value| value.as_str())
+        {
+            let trimmed = value.trim();
+            if !trimmed.is_empty() {
+                return trimmed.to_string();
+            }
+        }
+
+        WECHAT_DEFAULT_BOT_TYPE.to_string()
+    }
+
+    pub async fn start_interactive_login(
+        &self,
+        name: &str,
+        user_id: &str,
+    ) -> Result<InteractiveLoginStartResult, ExtensionError> {
+        Self::validate_extension_name(name)?;
+        let kind = self.determine_installed_kind(name, user_id).await?;
+        if Self::interactive_login_info_for_extension(name, kind).is_none() {
+            return Err(ExtensionError::AuthNotSupported(format!(
+                "Interactive login is not supported for '{}'",
+                name
+            )));
+        }
+
+        if name != WECHAT_CHANNEL_NAME {
+            return Err(ExtensionError::AuthNotSupported(format!(
+                "Interactive login is not implemented for '{}'",
+                name
+            )));
+        }
+
+        self.cleanup_expired_auths().await;
+
+        let base_url = self.resolve_wechat_base_url(user_id).await;
+        let bot_type = self.resolve_wechat_bot_type().await;
+        #[cfg(test)]
+        let login_result =
+            if let Some(starter) = self.test_wechat_login_starter.read().await.as_ref() {
+                starter(user_id, &base_url, &bot_type)
+            } else {
+                start_wechat_login(user_id, &base_url, &bot_type).await
+            };
+        #[cfg(not(test))]
+        let login_result = start_wechat_login(user_id, &base_url, &bot_type).await;
+
+        let (session, result) = login_result?;
+
+        self.pending_wechat_logins
+            .write()
+            .await
+            .insert(session.session_id.clone(), session);
+
+        Ok(result)
+    }
+
+    pub async fn poll_interactive_login(
+        &self,
+        name: &str,
+        session_id: &str,
+        user_id: &str,
+    ) -> Result<InteractiveLoginPollResult, ExtensionError> {
+        Self::validate_extension_name(name)?;
+        let kind = self.determine_installed_kind(name, user_id).await?;
+        if Self::interactive_login_info_for_extension(name, kind).is_none() {
+            return Err(ExtensionError::AuthNotSupported(format!(
+                "Interactive login is not supported for '{}'",
+                name
+            )));
+        }
+
+        if name != WECHAT_CHANNEL_NAME {
+            return Err(ExtensionError::AuthNotSupported(format!(
+                "Interactive login is not implemented for '{}'",
+                name
+            )));
+        }
+
+        self.cleanup_expired_auths().await;
+
+        let mut sessions = self.pending_wechat_logins.write().await;
+        let Some(session) = sessions.get_mut(session_id) else {
+            return Err(ExtensionError::Other(
+                "This WeChat login session no longer exists. Start again.".to_string(),
+            ));
+        };
+        if session.user_id != user_id {
+            return Err(ExtensionError::AuthFailed(
+                "This WeChat login session belongs to another user".to_string(),
+            ));
+        }
+
+        #[cfg(test)]
+        let outcome = if let Some(poller) = self.test_wechat_login_poller.read().await.as_ref() {
+            poller(session)
+        } else {
+            poll_wechat_login(session).await
+        }?;
+        #[cfg(not(test))]
+        let outcome = poll_wechat_login(session).await?;
+
+        match outcome {
+            WechatLoginPollOutcome::Pending(result) => {
+                if matches!(result.status.as_str(), "failed") {
+                    sessions.remove(session_id);
+                }
+                Ok(result)
+            }
+            WechatLoginPollOutcome::Confirmed(confirmed) => {
+                sessions.remove(session_id);
+                drop(sessions);
+
+                if let Some(base_url) = confirmed.base_url.as_deref()
+                    && let Some(store) = &self.store
+                {
+                    let _ = store
+                        .set_setting(
+                            user_id,
+                            WECHAT_BASE_URL_SETTING_PATH,
+                            &serde_json::Value::String(base_url.to_string()),
+                        )
+                        .await;
+                }
+
+                let mut secrets = std::collections::HashMap::new();
+                secrets.insert("wechat_bot_token".to_string(), confirmed.bot_token);
+                let configure = self
+                    .configure(name, &secrets, &std::collections::HashMap::new(), user_id)
+                    .await?;
+
+                Ok(InteractiveLoginPollResult {
+                    session_id: session_id.to_string(),
+                    status: if configure.activated {
+                        "succeeded".to_string()
+                    } else {
+                        "failed".to_string()
+                    },
+                    message: if configure.activated {
+                        format!(
+                            "WeChat connected as {}. {}",
+                            confirmed.ilink_bot_id, configure.message
+                        )
+                    } else {
+                        format!(
+                            "WeChat login succeeded for {} but activation failed: {}",
+                            confirmed.ilink_bot_id, configure.message
+                        )
+                    },
+                    qr_code_url: None,
+                    activated: Some(configure.activated),
+                })
+            }
+        }
+    }
+
    async fn configure_telegram_binding(
        &self,
        name: &str,
@@ -6029,8 +6336,13 @@ mod tests {
        normalize_hosted_callback_url, send_telegram_text_message,
        telegram_message_matches_verification_code,
    };
+    use crate::extensions::wechat_login::{
+        ConfirmedWechatLogin, PendingWechatLogin, WECHAT_BASE_URL_SETTING_PATH,
+        WechatLoginPollOutcome,
+    };
    use crate::extensions::{
-        ExtensionError, ExtensionKind, ExtensionSource, InstallResult, VerificationChallenge,
+        ExtensionError, ExtensionKind, ExtensionSource, InstallResult, InteractiveLoginStartResult,
+        VerificationChallenge,
    };
    use crate::pairing::PairingStore;

@@ -6978,6 +7290,203 @@ mod tests {
        )
    }

+    #[cfg(feature = "libsql")]
+    #[tokio::test]
+    async fn test_wechat_interactive_login_poll_persists_state_and_activates() -> Result<(), String>
+    {
+        let dir = tempfile::tempdir().map_err(|err| format!("temp dir: {err}"))?;
+        let channels_dir = dir.path().join("channels");
+        std::fs::create_dir_all(&channels_dir).map_err(|err| format!("channels dir: {err}"))?;
+        std::fs::write(channels_dir.join("wechat.wasm"), b"mock")
+            .map_err(|err| format!("write wasm: {err}"))?;
+        std::fs::write(
+            channels_dir.join("wechat.capabilities.json"),
+            serde_json::to_vec(&serde_json::json!({
+                "type": "channel",
+                "name": "wechat",
+                "setup": {
+                    "required_secrets": [
+                        {
+                            "name": "wechat_bot_token",
+                            "prompt": "Connect WeChat",
+                            "optional": false
+                        }
+                    ]
+                },
+                "capabilities": {
+                    "channel": {
+                        "allowed_paths": ["/webhook/wechat"]
+                    }
+                },
+                "config": {
+                    "base_url": "https://ilinkai.weixin.qq.com",
+                    "bot_type": "3"
+                }
+            }))
+            .map_err(|err| format!("serialize capabilities: {err}"))?,
+        )
+        .map_err(|err| format!("write capabilities: {err}"))?;
+
+        let (db, _db_tmp) = crate::testing::test_db().await;
+        let manager = {
+            use crate::secrets::{InMemorySecretsStore, SecretsCrypto};
+            use crate::testing::credentials::TEST_CRYPTO_KEY;
+            use crate::tools::ToolRegistry;
+            use crate::tools::mcp::process::McpProcessManager;
+            use crate::tools::mcp::session::McpSessionManager;
+
+            let master_key = secrecy::SecretString::from(TEST_CRYPTO_KEY.to_string());
+            let crypto = Arc::new(
+                SecretsCrypto::new(master_key)
+                    .unwrap_or_else(|err| panic!("failed to construct test crypto: {err}")),
+            );
+
+            Arc::new(ExtensionManager::new(
+                Arc::new(McpSessionManager::new()),
+                Arc::new(McpProcessManager::new()),
+                Arc::new(InMemorySecretsStore::new(crypto)),
+                Arc::new(ToolRegistry::new()),
+                None,
+                None,
+                dir.path().join("tools"),
+                channels_dir.clone(),
+                None,
+                "test".to_string(),
+                Some(db.clone()),
+                Vec::new(),
+            ))
+        };
+
+        let channel_manager = Arc::new(ChannelManager::new());
+        let runtime = Arc::new(
+            WasmChannelRuntime::new(WasmChannelRuntimeConfig::for_testing())
+                .map_err(|err| format!("runtime: {err}"))?,
+        );
+        let pairing_store = Arc::new(PairingStore::with_base_dir(
+            dir.path().join("pairing-state"),
+        ));
+        let router = Arc::new(WasmChannelRouter::new());
+        manager
+            .set_channel_runtime(
+                Arc::clone(&channel_manager),
+                Arc::clone(&runtime),
+                Arc::clone(&pairing_store),
+                Arc::clone(&router),
+                std::collections::HashMap::new(),
+            )
+            .await;
+        manager
+            .set_test_wasm_channel_loader(Arc::new({
+                let runtime = Arc::clone(&runtime);
+                let pairing_store = Arc::clone(&pairing_store);
+                move |name| {
+                    Ok(make_test_loaded_channel(
+                        Arc::clone(&runtime),
+                        name,
+                        Arc::clone(&pairing_store),
+                    ))
+                }
+            }))
+            .await;
+        manager
+            .set_test_wechat_login_starter(Arc::new(|user_id, base_url, bot_type| {
+                Ok((
+                    PendingWechatLogin {
+                        user_id: user_id.to_string(),
+                        session_id: "wechat-session-1".to_string(),
+                        qrcode: "qr-123".to_string(),
+                        qr_code_url: "https://qr.example/one".to_string(),
+                        started_at: std::time::Instant::now(),
+                        base_url: base_url.to_string(),
+                        bot_type: bot_type.to_string(),
+                        refresh_count: 0,
+                    },
+                    InteractiveLoginStartResult {
+                        session_id: "wechat-session-1".to_string(),
+                        status: "pending".to_string(),
+                        message: "Open the WeChat QR page to continue.".to_string(),
+                        qr_code_url: Some("https://qr.example/one".to_string()),
+                        instructions: Some(
+                            "Keep this window open while you scan and confirm on your phone."
+                                .to_string(),
+                        ),
+                    },
+                ))
+            }))
+            .await;
+        manager
+            .set_test_wechat_login_poller(Arc::new(|session| {
+                if session.session_id != "wechat-session-1" {
+                    return Err(ExtensionError::Other(format!(
+                        "unexpected session id: {}",
+                        session.session_id
+                    )));
+                }
+                Ok(WechatLoginPollOutcome::Confirmed(ConfirmedWechatLogin {
+                    bot_token: "wechat-token-123".to_string(),
+                    base_url: Some("https://wechat.example".to_string()),
+                    ilink_bot_id: "wx-bot-1".to_string(),
+                }))
+            }))
+            .await;
+
+        let start = manager
+            .start_interactive_login("wechat", "test")
+            .await
+            .map_err(|err| format!("start interactive login: {err}"))?;
+        require_eq(
+            start.session_id.clone(),
+            "wechat-session-1".to_string(),
+            "start session id",
+        )?;
+        require_eq(start.status, "pending".to_string(), "start status")?;
+
+        let poll = manager
+            .poll_interactive_login("wechat", &start.session_id, "test")
+            .await
+            .map_err(|err| format!("poll interactive login: {err}"))?;
+
+        require_eq(poll.status, "succeeded".to_string(), "poll status")?;
+        require_eq(poll.activated, Some(true), "poll activated")?;
+        require(
+            poll.message.contains("WeChat connected as wx-bot-1"),
+            format!("unexpected poll message: {}", poll.message),
+        )?;
+        require(
+            manager.active_channel_names.read().await.contains("wechat"),
+            "wechat should be marked active after successful login",
+        )?;
+        require(
+            channel_manager.get_channel("wechat").await.is_some(),
+            "wechat should be hot-added to the running channel manager",
+        )?;
+        require_eq(
+            manager.load_persisted_active_channels("test").await,
+            vec!["wechat".to_string()],
+            "persisted active channels",
+        )?;
+        require(
+            manager
+                .secrets
+                .exists("test", "wechat_bot_token")
+                .await
+                .map_err(|err| format!("check stored wechat token: {err}"))?,
+            "wechat bot token should be stored after successful login",
+        )?;
+        let persisted_base_url = manager
+            .store
+            .as_ref()
+            .ok_or_else(|| "db-backed manager missing".to_string())?
+            .get_setting("test", WECHAT_BASE_URL_SETTING_PATH)
+            .await
+            .map_err(|err| format!("wechat base_url setting query: {err}"))?;
+        require_eq(
+            persisted_base_url,
+            Some(serde_json::json!("https://wechat.example")),
+            "wechat base_url setting",
+        )
+    }
+
    #[tokio::test]
    async fn test_telegram_hot_activation_returns_verification_challenge_before_binding()
    -> Result<(), String> {
@@ -19,6 +19,7 @@
 pub mod discovery;
 pub mod manager;
 pub mod registry;
+pub(crate) mod wechat_login;

 pub use discovery::OnlineDiscovery;
 pub use manager::ExtensionManager;
@@ -69,12 +70,12 @@ pub struct RegistryEntry {
    /// Where to get this extension.
    pub source: ExtensionSource,
    /// Fallback source when the primary source fails (e.g., download 404 → build from source).
-    #[serde(default, skip_serializing_if = "Option::is_none")]
+    #[serde(skip_serializing_if = "Option::is_none")]
    pub fallback_source: Option<Box<ExtensionSource>>,
    /// How authentication works.
    pub auth_hint: AuthHint,
    /// Extension version (semver), if known.
-    #[serde(default, skip_serializing_if = "Option::is_none")]
+    #[serde(skip_serializing_if = "Option::is_none")]
    pub version: Option<String>,
 }

@@ -87,17 +88,14 @@ pub enum ExtensionSource {
    /// Downloadable WASM binary.
    WasmDownload {
        wasm_url: String,
-        #[serde(default)]
        capabilities_url: Option<String>,
    },
    /// Build from local source directory.
    WasmBuildable {
        #[serde(alias = "repo_url")]
        source_dir: String,
-        #[serde(default)]
        build_dir: Option<String>,
        /// Crate name used to locate the build artifact binary.
-        #[serde(default)]
        crate_name: Option<String>,
    },
    /// Discovered online (not yet validated for a specific source type).
@@ -389,13 +387,9 @@ impl<'de> Deserialize<'de> for AuthResult {
        struct Raw {
            name: String,
            kind: ExtensionKind,
-            #[serde(default)]
            auth_url: Option<String>,
-            #[serde(default)]
            callback_type: Option<String>,
-            #[serde(default)]
            instructions: Option<String>,
-            #[serde(default)]
            setup_url: Option<String>,
            #[serde(default)]
            awaiting_token: bool,
@@ -439,6 +433,52 @@ impl<'de> Deserialize<'de> for AuthResult {
    }
 }

+/// Interactive login metadata surfaced to setup UIs.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct InteractiveLoginInfo {
+    /// Login method identifier (for example `qr_code`).
+    pub method: String,
+    /// User-facing button label.
+    pub button_label: String,
+    /// Optional short instructions shown above the login control.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub instructions: Option<String>,
+}
+
+/// Result of starting an interactive extension login flow.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct InteractiveLoginStartResult {
+    /// Opaque session identifier used by follow-up poll requests.
+    pub session_id: String,
+    /// Flow status (`pending`, `error`).
+    pub status: String,
+    /// Human-readable message for the UI.
+    pub message: String,
+    /// Optional QR/image URL for browser display.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub qr_code_url: Option<String>,
+    /// Optional short instructions shown alongside the QR code.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub instructions: Option<String>,
+}
+
+/// Result of polling an interactive extension login flow.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct InteractiveLoginPollResult {
+    /// Session identifier associated with this poll result.
+    pub session_id: String,
+    /// Flow status (`pending`, `scanned`, `refreshed`, `succeeded`, `failed`).
+    pub status: String,
+    /// Human-readable message for the UI.
+    pub message: String,
+    /// Optional refreshed QR/image URL.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub qr_code_url: Option<String>,
+    /// Whether the extension was successfully activated as part of login completion.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub activated: Option<bool>,
+}
+
 /// Result of activating an extension.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ActivateResult {
@@ -506,6 +546,10 @@ pub struct InstalledExtension {
    /// Whether this extension has an auth configuration (OAuth or manual token).
    #[serde(default)]
    pub has_auth: bool,
+    /// Whether this extension still needs owner binding / pairing before it should
+    /// be treated as fully active in the UI.
+    #[serde(default)]
+    pub requires_binding: bool,
    /// Whether this extension is installed locally (false = available in registry but not installed).
    #[serde(default = "default_true")]
    pub installed: bool,
@@ -956,6 +1000,7 @@ mod tests {
            tools: vec!["send_email".to_string(), "read_inbox".to_string()],
            needs_setup: true,
            has_auth: true,
+            requires_binding: false,
            installed: false,
            activation_error: Some("token expired".to_string()),
            version: None,
@@ -0,0 +1,443 @@
+use std::time::{Duration, Instant};
+
+use reqwest::Client;
+use serde::Deserialize;
+use uuid::Uuid;
+
+use crate::extensions::{
+    ExtensionError, InteractiveLoginInfo, InteractiveLoginPollResult, InteractiveLoginStartResult,
+};
+
+pub(crate) const WECHAT_CHANNEL_NAME: &str = "wechat";
+pub(crate) const WECHAT_BASE_URL_SETTING_PATH: &str = "extensions.wechat.base_url";
+pub(crate) const WECHAT_DEFAULT_BASE_URL: &str = "https://ilinkai.weixin.qq.com";
+pub(crate) const WECHAT_DEFAULT_BOT_TYPE: &str = "3";
+
+const LOGIN_SESSION_TTL: Duration = Duration::from_secs(5 * 60);
+const QR_LONG_POLL_TIMEOUT: Duration = Duration::from_secs(35);
+const QR_FETCH_TIMEOUT: Duration = Duration::from_secs(15);
+const MAX_QR_REFRESH_COUNT: u8 = 3;
+
+#[derive(Debug, Clone)]
+pub(crate) struct PendingWechatLogin {
+    pub user_id: String,
+    pub session_id: String,
+    pub qrcode: String,
+    pub qr_code_url: String,
+    pub started_at: Instant,
+    pub base_url: String,
+    pub bot_type: String,
+    pub refresh_count: u8,
+}
+
+impl PendingWechatLogin {
+    pub fn is_fresh(&self) -> bool {
+        self.started_at.elapsed() < LOGIN_SESSION_TTL
+    }
+}
+
+#[derive(Debug, Clone)]
+pub(crate) struct ConfirmedWechatLogin {
+    pub bot_token: String,
+    pub base_url: Option<String>,
+    pub ilink_bot_id: String,
+}
+
+pub(crate) enum WechatLoginPollOutcome {
+    Pending(InteractiveLoginPollResult),
+    Confirmed(ConfirmedWechatLogin),
+}
+
+#[derive(Debug, Clone, Deserialize)]
+struct QrCodeResponse {
+    qrcode: String,
+    qrcode_img_content: String,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+struct QrStatusResponse {
+    status: String,
+    bot_token: Option<String>,
+    ilink_bot_id: Option<String>,
+    baseurl: Option<String>,
+}
+
+pub(crate) fn interactive_login_info() -> InteractiveLoginInfo {
+    InteractiveLoginInfo {
+        method: "qr_code".to_string(),
+        button_label: "Connect WeChat".to_string(),
+        instructions: Some("Scan the QR code with WeChat to connect this channel.".to_string()),
+    }
+}
+
+pub(crate) fn purge_expired_logins(
+    sessions: &mut std::collections::HashMap<String, PendingWechatLogin>,
+) {
+    sessions.retain(|_, session| session.is_fresh());
+}
+
+pub(crate) async fn start_login(
+    user_id: &str,
+    base_url: &str,
+    bot_type: &str,
+) -> Result<(PendingWechatLogin, InteractiveLoginStartResult), ExtensionError> {
+    let qr = fetch_qr_code(base_url, bot_type).await?;
+    Ok(build_pending_login(user_id, base_url, bot_type, qr))
+}
+
+pub(crate) async fn poll_login(
+    session: &mut PendingWechatLogin,
+) -> Result<WechatLoginPollOutcome, ExtensionError> {
+    if !session.is_fresh() {
+        return Ok(WechatLoginPollOutcome::Pending(
+            InteractiveLoginPollResult {
+                session_id: session.session_id.clone(),
+                status: "failed".to_string(),
+                message: "The QR code expired. Start a new WeChat connection.".to_string(),
+                qr_code_url: None,
+                activated: Some(false),
+            },
+        ));
+    }
+
+    let status = poll_qr_status(&session.base_url, &session.qrcode).await?;
+    let refreshed_qr = if status.status == "expired" && session.refresh_count < MAX_QR_REFRESH_COUNT
+    {
+        Some(fetch_qr_code(&session.base_url, &session.bot_type).await?)
+    } else {
+        None
+    };
+
+    handle_poll_status(session, status, refreshed_qr)
+}
+
+fn build_pending_login(
+    user_id: &str,
+    base_url: &str,
+    bot_type: &str,
+    qr: QrCodeResponse,
+) -> (PendingWechatLogin, InteractiveLoginStartResult) {
+    let session_id = Uuid::new_v4().to_string();
+    let session = PendingWechatLogin {
+        user_id: user_id.to_string(),
+        session_id: session_id.clone(),
+        qrcode: qr.qrcode,
+        qr_code_url: qr.qrcode_img_content.clone(),
+        started_at: Instant::now(),
+        base_url: base_url.to_string(),
+        bot_type: bot_type.to_string(),
+        refresh_count: 0,
+    };
+
+    let result = InteractiveLoginStartResult {
+        session_id,
+        status: "pending".to_string(),
+        message: "Open the WeChat QR page to continue.".to_string(),
+        qr_code_url: Some(qr.qrcode_img_content),
+        instructions: Some(
+            "Keep this window open while you scan and confirm on your phone.".to_string(),
+        ),
+    };
+
+    (session, result)
+}
+
+fn handle_poll_status(
+    session: &mut PendingWechatLogin,
+    status: QrStatusResponse,
+    refreshed_qr: Option<QrCodeResponse>,
+) -> Result<WechatLoginPollOutcome, ExtensionError> {
+    match status.status.as_str() {
+        "wait" => Ok(WechatLoginPollOutcome::Pending(
+            InteractiveLoginPollResult {
+                session_id: session.session_id.clone(),
+                status: "pending".to_string(),
+                message: "Waiting for the QR code to be scanned.".to_string(),
+                qr_code_url: None,
+                activated: None,
+            },
+        )),
+        "scaned" => Ok(WechatLoginPollOutcome::Pending(
+            InteractiveLoginPollResult {
+                session_id: session.session_id.clone(),
+                status: "scanned".to_string(),
+                message: "QR code scanned. Confirm the login in WeChat.".to_string(),
+                qr_code_url: None,
+                activated: None,
+            },
+        )),
+        "expired" => {
+            session.refresh_count = session.refresh_count.saturating_add(1);
+            if session.refresh_count > MAX_QR_REFRESH_COUNT {
+                return Ok(WechatLoginPollOutcome::Pending(
+                    InteractiveLoginPollResult {
+                        session_id: session.session_id.clone(),
+                        status: "failed".to_string(),
+                        message: "The QR code expired too many times. Start again.".to_string(),
+                        qr_code_url: None,
+                        activated: Some(false),
+                    },
+                ));
+            }
+
+            let refreshed = refreshed_qr.ok_or_else(|| {
+                ExtensionError::Other(
+                    "WeChat QR status expired without a refreshed QR code".to_string(),
+                )
+            })?;
+            session.qrcode = refreshed.qrcode;
+            session.qr_code_url = refreshed.qrcode_img_content.clone();
+            session.started_at = Instant::now();
+
+            Ok(WechatLoginPollOutcome::Pending(
+                InteractiveLoginPollResult {
+                    session_id: session.session_id.clone(),
+                    status: "refreshed".to_string(),
+                    message: "The QR code expired, so a fresh one was generated.".to_string(),
+                    qr_code_url: Some(refreshed.qrcode_img_content),
+                    activated: None,
+                },
+            ))
+        }
+        "confirmed" => {
+            let bot_token = status.bot_token.filter(|token| !token.trim().is_empty());
+            let ilink_bot_id = status
+                .ilink_bot_id
+                .filter(|value| !value.trim().is_empty())
+                .ok_or_else(|| {
+                    ExtensionError::Other(
+                        "WeChat login succeeded but no bot account id was returned".to_string(),
+                    )
+                })?;
+
+            let bot_token = bot_token.ok_or_else(|| {
+                ExtensionError::Other(
+                    "WeChat login succeeded but no bot token was returned".to_string(),
+                )
+            })?;
+
+            Ok(WechatLoginPollOutcome::Confirmed(ConfirmedWechatLogin {
+                bot_token,
+                base_url: status.baseurl.filter(|value| !value.trim().is_empty()),
+                ilink_bot_id,
+            }))
+        }
+        other => {
+            tracing::warn!(status = other, "Unexpected WeChat QR status");
+            Ok(WechatLoginPollOutcome::Pending(
+                InteractiveLoginPollResult {
+                    session_id: session.session_id.clone(),
+                    status: "failed".to_string(),
+                    message: format!("Unexpected WeChat login status: {other}"),
+                    qr_code_url: None,
+                    activated: Some(false),
+                },
+            ))
+        }
+    }
+}
+
+fn ensure_trailing_slash(base_url: &str) -> String {
+    if base_url.ends_with('/') {
+        base_url.to_string()
+    } else {
+        format!("{base_url}/")
+    }
+}
+
+async fn fetch_qr_code(base_url: &str, bot_type: &str) -> Result<QrCodeResponse, ExtensionError> {
+    let base = ensure_trailing_slash(base_url);
+    let url = format!(
+        "{base}ilink/bot/get_bot_qrcode?bot_type={}",
+        urlencoding::encode(bot_type)
+    );
+    let client = Client::builder()
+        .timeout(QR_FETCH_TIMEOUT)
+        .build()
+        .map_err(|e| ExtensionError::Other(format!("Failed to create WeChat login client: {e}")))?;
+
+    let response = client
+        .get(&url)
+        .send()
+        .await
+        .map_err(|e| ExtensionError::Other(format!("Failed to fetch WeChat QR code: {e}")))?;
+
+    if !response.status().is_success() {
+        let status = response.status();
+        let body = response.text().await.unwrap_or_default();
+        tracing::warn!(status = %status, "WeChat QR code request failed");
+        return Err(ExtensionError::Other(format!(
+            "WeChat QR code request failed with {status}: {body}"
+        )));
+    }
+
+    response
+        .json::<QrCodeResponse>()
+        .await
+        .map_err(|e| ExtensionError::Other(format!("Failed to parse WeChat QR code response: {e}")))
+}
+
+async fn poll_qr_status(base_url: &str, qrcode: &str) -> Result<QrStatusResponse, ExtensionError> {
+    let base = ensure_trailing_slash(base_url);
+    let url = format!(
+        "{base}ilink/bot/get_qrcode_status?qrcode={}",
+        urlencoding::encode(qrcode)
+    );
+    let client = Client::builder()
+        .timeout(QR_LONG_POLL_TIMEOUT)
+        .build()
+        .map_err(|e| ExtensionError::Other(format!("Failed to create WeChat poll client: {e}")))?;
+
+    let response = client
+        .get(&url)
+        .header("iLink-App-ClientVersion", "1")
+        .send()
+        .await;
+
+    let response = match response {
+        Ok(response) => response,
+        Err(error) if error.is_timeout() => {
+            return Ok(QrStatusResponse {
+                status: "wait".to_string(),
+                bot_token: None,
+                ilink_bot_id: None,
+                baseurl: None,
+            });
+        }
+        Err(error) => {
+            return Err(ExtensionError::Other(format!(
+                "Failed to poll WeChat QR status: {error}"
+            )));
+        }
+    };
+
+    if !response.status().is_success() {
+        let status = response.status();
+        let body = response.text().await.unwrap_or_default();
+        tracing::warn!(status = %status, "WeChat QR status poll failed");
+        return Err(ExtensionError::Other(format!(
+            "WeChat QR status poll failed with {status}: {body}"
+        )));
+    }
+
+    response
+        .json::<QrStatusResponse>()
+        .await
+        .map_err(|e| ExtensionError::Other(format!("Failed to parse WeChat QR status: {e}")))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{
+        QrCodeResponse, QrStatusResponse, WechatLoginPollOutcome, build_pending_login,
+        handle_poll_status,
+    };
+
+    #[test]
+    fn test_build_pending_login_returns_qr_state_and_result() {
+        let (session, start_result) = build_pending_login(
+            "owner",
+            "https://ilink.example",
+            "3",
+            QrCodeResponse {
+                qrcode: "qr-123".to_string(),
+                qrcode_img_content: "https://qr.example/one".to_string(),
+            },
+        );
+
+        assert_eq!(session.user_id, "owner");
+        assert_eq!(session.base_url, "https://ilink.example");
+        assert_eq!(session.bot_type, "3");
+        assert_eq!(session.qrcode, "qr-123");
+        assert_eq!(session.qr_code_url, "https://qr.example/one");
+        assert_eq!(start_result.status, "pending");
+        assert_eq!(
+            start_result.qr_code_url.as_deref(),
+            Some("https://qr.example/one")
+        );
+        assert_eq!(start_result.session_id, session.session_id);
+    }
+
+    #[test]
+    fn test_handle_poll_status_confirms_login() -> Result<(), String> {
+        let (mut session, _) = build_pending_login(
+            "owner",
+            "https://ilink.example",
+            "3",
+            QrCodeResponse {
+                qrcode: "qr-123".to_string(),
+                qrcode_img_content: "https://qr.example/one".to_string(),
+            },
+        );
+        let outcome = handle_poll_status(
+            &mut session,
+            QrStatusResponse {
+                status: "confirmed".to_string(),
+                bot_token: Some("bot-token-123".to_string()),
+                ilink_bot_id: Some("wx-bot-1".to_string()),
+                baseurl: Some("https://override.example".to_string()),
+            },
+            None,
+        )
+        .map_err(|e| e.to_string())?;
+
+        match outcome {
+            WechatLoginPollOutcome::Confirmed(confirmed) => {
+                assert_eq!(confirmed.bot_token, "bot-token-123");
+                assert_eq!(confirmed.ilink_bot_id, "wx-bot-1");
+                assert_eq!(
+                    confirmed.base_url.as_deref(),
+                    Some("https://override.example")
+                );
+                Ok(())
+            }
+            WechatLoginPollOutcome::Pending(result) => Err(format!(
+                "expected confirmed login, got pending status {}",
+                result.status
+            )),
+        }
+    }
+
+    #[test]
+    fn test_handle_poll_status_refreshes_expired_qr() -> Result<(), String> {
+        let (mut session, _) = build_pending_login(
+            "owner",
+            "https://ilink.example",
+            "3",
+            QrCodeResponse {
+                qrcode: "qr-initial".to_string(),
+                qrcode_img_content: "https://qr.example/initial".to_string(),
+            },
+        );
+        let outcome = handle_poll_status(
+            &mut session,
+            QrStatusResponse {
+                status: "expired".to_string(),
+                bot_token: None,
+                ilink_bot_id: None,
+                baseurl: None,
+            },
+            Some(QrCodeResponse {
+                qrcode: "qr-refreshed".to_string(),
+                qrcode_img_content: "https://qr.example/refreshed".to_string(),
+            }),
+        )
+        .map_err(|e| e.to_string())?;
+
+        match outcome {
+            WechatLoginPollOutcome::Pending(result) => {
+                assert_eq!(result.status, "refreshed");
+                assert_eq!(
+                    result.qr_code_url.as_deref(),
+                    Some("https://qr.example/refreshed")
+                );
+                assert_eq!(session.qrcode, "qr-refreshed");
+                assert_eq!(session.refresh_count, 1);
+                Ok(())
+            }
+            WechatLoginPollOutcome::Confirmed(_) => {
+                Err("expected QR refresh before confirmation".to_string())
+            }
+        }
+    }
+}
@@ -119,6 +119,7 @@ impl TranscriptionMiddleware {
                Some(f) => f,
                None => {
                    tracing::warn!(
+                        attachment_id = %attachment.id,
                        mime = %attachment.mime_type,
                        "Skipping audio attachment with unsupported format"
                    );
@@ -128,11 +129,6 @@ impl TranscriptionMiddleware {

            match self.provider.transcribe(&attachment.data, format).await {
                Ok(text) => {
-                    tracing::info!(
-                        attachment_id = %attachment.id,
-                        text_len = text.len(),
-                        "Transcribed audio attachment"
-                    );
                    transcriptions.push((i, text));
                }
                Err(e) => {
Author	SHA1	Message	Date
Coffee	0d7f7b817f	Add configurable WeChat merge windows and clean debug logs	2026-03-27 19:04:15 +08:00
Coffee	da733b4711	Remove redundant serde defaults from optional fields	2026-03-27 15:28:41 +08:00
Coffee	452f98c1b4	fix: remove logs	2026-03-27 15:19:27 +08:00
Coffee	5f0a7e8c42	fix: error params	2026-03-27 15:10:59 +08:00
Coffee	921ffd9bad	chore: lock file	2026-03-27 14:47:11 +08:00
Coffee	4ed469e913	Merge branch 'staging' into feat/wechat-integration # Conflicts: # Cargo.lock	2026-03-27 14:46:13 +08:00
Coffee	6bc339f83c	Add SILK voice fallback and WeChat polling diagnostics	2026-03-27 14:45:30 +08:00
Coffee	7284e05cd9	Add WeChat inbound file and voice attachment support	2026-03-27 10:44:47 +08:00
Coffee	935631421f	Fix web auth event type after AppEvent migration	2026-03-26 19:38:29 +08:00
Coffee	6510b05bba	Merge branch 'staging' into feat/wechat-integration	2026-03-26 19:29:03 +08:00
Coffee	5705366efb	Add WeChat image messaging and QR login polish	2026-03-26 18:59:26 +08:00
Coffee	5b2dbd6ea8	Fix WeChat extension status and login i18n	2026-03-26 13:18:17 +08:00
Coffee	7dfc5ddd0d	Add WeChat typing indicators to the DM channel	2026-03-26 12:09:07 +08:00
Coffee	60aaecd684	Rename Weixin channel integration to WeChat	2026-03-25 15:33:59 +08:00
Coffee	a64c694777	Add Weixin interactive login integration tests	2026-03-25 14:58:16 +08:00
Coffee	e30d9fe9db	Add Weixin channel with QR login and web setup flow	2026-03-25 13:40:03 +08:00