SessionDB could leave native SQLite handles open when construction failed
partway through schema/pragma/FTS/repair/lock/interrupt handling. Other
short-lived callers (MCP reads/polling, session search, reactions, trace
upload, insights, shutdown recovery) opened temporary SessionDB handles
without a complete ownership boundary. API-server profile caches and
RetainDB shutdown had similar late-close races. Under sustained load this
exhausted file descriptors (EMFILE).
- Close partially initialized SessionDB connections on every constructor
exception path via a finally block guarded by an initialization-complete
flag.
- Close temporary/cross-profile SessionDB handles in finally blocks across
CLI, MCP, search, trace, reactions, insights, and recovery paths.
- Add API-server per-profile cache ownership and disconnect cleanup.
- Make RetainDB writer-queue shutdown exception-safe: track connections per
thread, close on worker exit, reject new enqueues after shutdown starts,
and sweep any connections left by short-lived threads.
- Add regression coverage for constructor failures, worker-thread readers,
API disconnect failures, shutdown recovery, RetainDB late enqueue, and
foreign-loop async clients.
Salvage notes: the original PR's per-thread WAL-reader ownership changes
were superseded by main's read-connection pool (permits + checkout/return);
its cron timeout-abandon fix is credited separately to #72822's earlier
identical fix.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Main's 243c9182b1/a16fd675df/7142dc4580 added load_config_readonly
sibling stubs across 38 files; our pruned versions of 11 of those files
kept only the load_config stubs. Re-applied the pairing at every
surviving site (26 patch()/setattr sites) — same return_value/
side_effect as the adjacent load_config stub. 494 tests green across
the 11 files.
Final pass: per_model_threshold_init_ordering, memory_provider_init,
plugin_context_engine_init, api_max_retries_config,
invalid_context_length_warning, tool_call_guardrail_runtime all stub
agent_init config reads that now resolve through load_config_readonly().
Verified by running the complete 59-file suspect list (every test file
that stubs load_config in string or attribute form and intersects the
swapped modules): 3,063 tests, 0 failed.
A memory provider tool whose name collides with a built-in core tool
(e.g. clarify, delegate_task) was skipped from agent.tools at init but
lingered in MemoryManager._tool_to_provider, where the has_tool dispatch
branch could route a call to a tool that was never registered (#40466).
Block the collision at registration instead of patching dispatch:
- MemoryManager.add_provider rejects any tool whose name is in
_HERMES_CORE_TOOLS (warn + skip), so it never enters the routing table.
- get_all_tool_schemas applies the same filter, so the manager never
advertises a schema it would refuse to route.
Built-ins always win, matching the invariant used by the TTS/browser/
search provider registries. Makes the dispatch-hijack structurally
impossible regardless of branch ordering.
Closes#40466.
joaomarcos