## Summary
- Include `dyadRequestId` in `terminated_stream_retry` telemetry events
for better traceability
- Add new `terminated_stream_retries_exhausted` telemetry event when all
retries are used up (both stream_iteration and response_finalization
phases)
- Bump `MAX_TERMINATED_STREAM_RETRIES` from 2 to 3

## Test plan
- Existing `local_agent_handler` unit tests pass (stream retry tests
verified)
- Verify telemetry events include `dyadRequestId` in retry scenarios
- Verify exhausted event fires when retries exceed the new limit of 3

#skip-bugbot

Made with [Cursor](https://cursor.com)
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