fix(registry): version-pinned WASM artifact URLs + ChecksumMismatch source fallback (#832)

* fix(registry): version-pinned WASM artifact URLs + ChecksumMismatch fallback (#439)

Root cause: all artifact URLs used releases/latest/download/, which is a
moving target. Every release rebuilds all WASM extensions non-deterministically,
so sha256 baked into an older binary diverges from the content at 'latest'.
ChecksumMismatch was also a hard block with no source-build fallback.

Three-layer fix:

1. src/registry/installer.rs — allow source-build fallback for ChecksumMismatch
   on releases/latest URLs (moving-target artifact rotation, not tampering).
   Version-pinned URLs (releases/download/vX.Y.Z/) remain a hard block.
   Adds regression test (test_source_fallback_on_latest_url_mismatch) and
   updates test_should_attempt_source_fallback_policy to cover both URL types.

2. .github/workflows/release.yml — three CI changes:
   - build-wasm-extensions: version-detect, skip-if-unchanged, versioned filenames
     (name-{version}-wasm32-wasip2.tar.gz). Skip rebuild when manifest already has
     a non-null sha256 and the URL embeds the current version — stable checksums
     until source actually changes.
   - build-local-artifacts: patch manifests with version-pinned URL + sha256 (for
     binary embedding via build.rs).
   - update-registry-checksums: same URL patching for the main-branch PR.
   All three sed patterns use '.*' (greedy) to correctly handle pre-release
   version strings like 0.1.0-alpha.1.

3. registry/{tools,channels}/*.json — null out all 14 stale sha256 values.
   Null sha256 -> MissingChecksum -> source-build fallback (works on all binaries).
   Next release CI will populate version-pinned URLs + stable checksums.

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

* style: cargo fmt

* fix(ci): use JSON filename stem for WASM bundle names to fix manifest lookup

Manifests like registry/tools/slack.json have name='slack-tool', causing
the patching step to look for registry/tools/slack-tool.json (missing).

Introduce file_stem (JSON filename without .json) for the bundle filename
and checksums.txt entry, while keeping ext_name (manifest .name) for archive
contents — the installer extracts files by manifest.name so those must still
match. The patching step strips -{version}-wasm32-wasip2.tar.gz from the
filename stem and looks up registry/tools/slack.json correctly.

* fix(registry): tighten fallback URL check + deduplicate tests

Address PR review feedback:

1. Make should_attempt_source_fallback check repo-specific
   (github.com/nearai/ironclaw/releases/latest/) instead of a
   generic substring (/releases/latest/download/).

2. Remove duplicate ChecksumMismatch cases from
   test_should_attempt_source_fallback_policy — that coverage
   lives in the dedicated regression test
   test_source_fallback_on_latest_url_mismatch.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

---------

Co-authored-by: Claude Sonnet 4.6 <[email protected]>

registry/channels/discord.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/discord-wasm32-wasip2.tar.gz",
-      "sha256": "030707431717bca3411a48f311c6ab5f92a45c747de26cafe4f6e3e23a8b3b2d"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/channels/slack.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/slack-wasm32-wasip2.tar.gz",
-      "sha256": "6ed36077b67ac70a041f06f760f93ba79b33269885413c3c3f2c8c87ee60807e"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/channels/telegram.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/telegram-wasm32-wasip2.tar.gz",
-      "sha256": "98c86895a9c4b0a1e19fe8a47f1ccbfe7e972e112b05e584bc897130dc32283a"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/channels/whatsapp.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/whatsapp-wasm32-wasip2.tar.gz",
-      "sha256": "bd35cad18d87292ea8d2f52db9b514ed9f814a414de910f59073d475c26c4c14"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/github.json

@@ -20,7 +20,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/github-wasm32-wasip2.tar.gz",
-      "sha256": "6fcd32719a4ff15641a4b50fff8984686550f0c491dce60518f4126857d0c544"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/gmail.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/gmail-wasm32-wasip2.tar.gz",
-      "sha256": "023da7000b17568bf0e64b2e5013c8a042b2f323c85f1632339231c73d500e39"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/google-calendar.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/google-calendar-wasm32-wasip2.tar.gz",
-      "sha256": "fc42277b65881d6e9bcc5403dc54c7f5b3ddeaaaf04617fce2c5da05d76325f0"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/google-docs.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/google-docs-wasm32-wasip2.tar.gz",
-      "sha256": "385c04abd1e6b8011ccc330e1f4bd7ce58577e488959b51594aa04eb26cbe7cc"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/google-drive.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/google-drive-wasm32-wasip2.tar.gz",
-      "sha256": "1b107d575a5d52cc8c76d9a681802190f4373fb485f7f54f445533f097fa37c0"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/google-sheets.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/google-sheets-wasm32-wasip2.tar.gz",
-      "sha256": "c4f6b1e8c5126ac2c8a4b98e4283a3afa32223d2488fc3c3a609758c0c9beb90"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/google-slides.json

@@ -18,7 +18,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/google-slides-wasm32-wasip2.tar.gz",
-      "sha256": "7110b8565340c888e51f99e9c013bf4de8f8a7f7b33bace00eb8fc47831ff20b"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/slack.json

@@ -18,7 +18,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/slack-tool-wasm32-wasip2.tar.gz",
-      "sha256": "6ed36077b67ac70a041f06f760f93ba79b33269885413c3c3f2c8c87ee60807e"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/telegram.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/telegram-mtproto-wasm32-wasip2.tar.gz",
-      "sha256": "98c86895a9c4b0a1e19fe8a47f1ccbfe7e972e112b05e584bc897130dc32283a"
+      "sha256": null
     }
   },
   "auth_summary": {

registry/tools/web-search.json

@@ -19,7 +19,7 @@
   "artifacts": {
     "wasm32-wasip2": {
       "url": "https://github.com/nearai/ironclaw/releases/latest/download/web-search-wasm32-wasip2.tar.gz",
-      "sha256": "66cb2b9b00652385e9f30f17c74902b9222c17c53e9d3bd1ef42f5cab705bcf6"
+      "sha256": null
     }
   },
   "auth_summary": {