Fix stalled-message recovery and bounded workflow context
- Process long and busy conversation histories in bounded pages while preserving exact cancellation, completion and recovery coverage.
- Continue conversation and candidate batches fairly, and inspect source links without a lifetime task-count cutoff.
- Stream large response bodies without blocking ordinary conversation context, message admission or notification receipt checks.
- Bound recovery and goal-handoff context while retaining access to complete durable evidence.
- Preserve safe recovery decisions and abnormal-exit diagnostics, including explicit limits on signal attribution.