Stopping a conversation previously disposed the outer reactive stream without reliably cancelling synchronous tool callbacks running on worker threads. Shell commands, skill scripts, and Playwright sessions could therefore outlive the visible chat turn.
Propagate cancellation through run-scoped hooks, interrupt active tool execution and parallel batches, terminate subprocess trees, close per-conversation browser sessions, and wait briefly for final stream persistence before acknowledging Stop.
Expose an explicit interrupting state in the chat input to block duplicate stop clicks and show progress, with regression coverage for cancelling an in-flight synchronous tool callback.
Forward unrecognized OpenAI-compatible generateKwargs keys through extraBody while reserving documented provider control keys such as modelsPath.\n\nVerification:\n- cd mateclaw-server && mvn -pl . test -Dtest=OpenAiCompatibleChatModelBuilderTest,ModelDiscoveryServiceTestPromptTest\n- cd mateclaw-ui && node --max-old-space-size=6144 ./node_modules/vue-tsc/bin/vue-tsc.js --noEmit
Normalize stream idle timeout overrides, make WebChat orphan cleanup use exact run handles so stale callbacks cannot mutate replacement runs, and preserve approval replay usage metadata with regression coverage.
Raise WebChat SSE timeout and non-benign error lifecycle logs to INFO while keeping routine client disconnects at DEBUG, preserving detach-based subscriber lifecycle semantics.
Use detach rather than complete for WebChat SSE disconnect callbacks, add an orphan-run grace policy for subscriberless active runs, and emergency-save partial assistant output when reclaimed.
Close WebChat subscriber SSE connections when the logical stream reaches done/error, make the emitter timeout configurable, and ensure stale-run eviction closes subscribers instead of leaving clients waiting.
Apply a Reactor inter-frame idle timeout at the streaming chat chokepoint so half-open provider body streams surface through the normal retry/failover path. Also keep the HTTP timeout documentation accurate and cover the behavior with focused tests.
