Interrupt and drain canceled classifier responses before socket reuse

[copyberry]

Interrupt and drain canceled classifier responses before socket reuse

Why

Canceled classifier requests need bounded cleanup that preserves received token usage and returns only safe WebSocket connections to the pool.

What changed

• Own classifier response streams and connection leases together, interrupting dropped responses with a one-second cleanup deadline.
• Require a matching interruption acknowledgement and response completion before reusing a canceled response's socket. Retire sockets on rejection, invalid acknowledgements, or timeout while preserving any received completion and token usage.
• Skip requests canceled before dispatch and return their unused sockets to the pool.
• Distinguish cancellation from ordinary steering, which continues draining without requiring an interruption acknowledgement.

Testing

Add regression coverage for cancellation, acknowledgement ordering and failures, cleanup timeouts, socket reuse, and token accounting under backpressure. Extend steering tests to cover rejected and missing acknowledgements.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	🔄 Running since 2026-10-13T15:24:14.439132Z	1a49ca0	PR opened

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