fix: stability hardening — resource leaks, crash vectors, graceful shutdown#2591

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vibegui wants to merge 19 commits intomainfrom

fix/stability-hardening

Commits on Mar 6, 2026

fix(monitoring): add statement_timeout and sequential widget queries to prevent crash

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claude
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fix(api): dispose per-request client pool to prevent connection leak

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fix(proxy): close server/transport on error paths to prevent resource leaks

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fix(server): add graceful shutdown on SIGTERM/SIGINT

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fix(startup): await event bus and SSE hub initialization

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fix(event-bus): add yield in coalescing loop to prevent CPU exhaustion

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fix(decopilot): close NATS replay stream after consecutive malformed messages

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fix(monitoring): add backpressure to fire-and-forget DB writes

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fix(types): update MeshContext type to include asyncDispose on client pool

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revert: remove server.close() from proxy routes (breaks SSE connections)

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fix: guard eventBus.stop() in shutdown to prevent skipping remaining cleanup

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fix: handle shutdown() rejection in signal handler to ensure clean exit

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fix: wrap eventBus.stop() in Promise.resolve for void | Promise<void> type

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fix: use abort signal for client pool disposal instead of finally block

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fix: add 10s timeout to shutdown handler to prevent infinite hangs

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fix(monitoring): log sampled warning when backpressure drops writes

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fix: preserve default export as Hono app in api/index.ts

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fix: combine abort signal + finally for client pool disposal

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fix: add catch to finally-path client pool disposal

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fix: stability hardening — resource leaks, crash vectors, graceful shutdown#2591

fix: stability hardening — resource leaks, crash vectors, graceful shutdown#2591
vibegui wants to merge 19 commits intomainfrom
fix/stability-hardening

Commits on Mar 6, 2026

fix(monitoring): add statement_timeout and sequential widget queries to prevent crash

fix(api): dispose per-request client pool to prevent connection leak

fix(proxy): close server/transport on error paths to prevent resource leaks

fix(server): add graceful shutdown on SIGTERM/SIGINT

fix(startup): await event bus and SSE hub initialization

fix(event-bus): add yield in coalescing loop to prevent CPU exhaustion

fix(decopilot): close NATS replay stream after consecutive malformed messages

fix(monitoring): add backpressure to fire-and-forget DB writes

fix(types): update MeshContext type to include asyncDispose on client pool

revert: remove server.close() from proxy routes (breaks SSE connections)

fix: guard eventBus.stop() in shutdown to prevent skipping remaining cleanup

fix: handle shutdown() rejection in signal handler to ensure clean exit

fix: wrap eventBus.stop() in Promise.resolve for void | Promise<void> type

fix: use abort signal for client pool disposal instead of finally block

fix: add 10s timeout to shutdown handler to prevent infinite hangs

fix(monitoring): log sampled warning when backpressure drops writes

fix: preserve default export as Hono app in api/index.ts

fix: combine abort signal + finally for client pool disposal

fix: add catch to finally-path client pool disposal