- P0: Switch libsql_backend to connection-per-operation pattern to fix
shared Connection concurrency issue across tokio tasks
- P0: Wrap secrets store INSERT+SELECT in transaction to fix TOCTOU race
- P0: Document encryption-at-rest limitations and json_patch divergence
- P1: Fix get_opt_text removing .filter(|s| !s.is_empty()) that conflated
empty strings with NULL
- P1: Replace datetime('now') with fmt_ts(&Utc::now()) for consistent
RFC 3339 timestamps across all queries
- P2: Use explicit _rowid column in FTS5 triggers and joins for stability
across VACUUM operations
- P2: Add tracing::warn when embedding provided but vector search disabled
in hybrid_search
- Extract shared connect_from_config() helper to deduplicate DB connection
logic across main.rs, cli/config.rs, and cli/mcp.rs
Co-Authored-By: Claude Opus 4.6 <[email protected]>
Introduce a Database trait abstraction (~60 async methods) enabling
compile-time backend selection between PostgreSQL and libSQL/Turso.
Convert all modules from concrete Store to Arc<dyn Database>, add
LibSqlSecretsStore and LibSqlWasmToolStore implementations, wire
libsql stores throughout CLI and main entry points, and make the
setup wizard backend-agnostic.
Key changes:
- src/db/: Database trait, PostgresDatabase adapter, LibSqlBackend
with native SQLite-dialect SQL, and idempotent migration system
- src/secrets/store.rs: LibSqlSecretsStore (all 8 trait methods)
- src/tools/wasm/storage.rs: LibSqlWasmToolStore (all 7 trait methods)
- src/main.rs, cli/tool.rs, cli/mcp.rs: backend-conditional wiring
- src/setup/channels.rs: SecretsContext uses Arc<dyn SecretsStore>
- Feature-gate postgres-only tests and examples
Co-Authored-By: Claude Opus 4.6 <[email protected]>
