Merge 1061 added a replay_current_pipeline_state() call to the broadcast::Lagged
branch, but replay broadcasts one event per CRDT item (~997) into a 256-slot
channel, deterministically re-overflowing it and triggering another Lagged. The
loop pinned CPU and likely caused today's machine crash. Revert to the pre-1061
behaviour of logging and continuing.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
1018's merge_failure_block_subscriber counted every MergeFailure transition
toward the 3-strike block threshold, but mergemaster's recovery iterations
(squash → fail → fix → retry) emit multiple MergeFailure transitions while
making real progress. Story 997 was blocked at 10:59:46 while mergemaster
was still resolving conflicts and would have succeeded a minute later.
Fix: pass the AgentPool to the subscriber. When a mergemaster agent is in
the pool for the story, MergeFailure transitions are recovery iterations
in progress and do NOT increment the consecutive-failure counter. Block
only fires for the genuinely-stuck case (no recovery agent attached and N
consecutive failures accumulate).
Tests:
- mergemaster_running_suppresses_block: 3 failures with recovery_running=true
→ counter stays empty, story stays in MergeFailure
- no_mergemaster_still_blocks_at_threshold: 3 failures with recovery_running=false
→ blocks (1018 behaviour preserved)
All 2938 tests pass.
The state machine's `Stage` enum becomes the source of truth for pipeline
state. Six stages of work land together:
1. Clean wire vocabulary (`coding`, `merge`, `merge_failure`, ...) replaces
legacy directory-style strings (`2_current`, `4_merge`, ...) on the wire.
`Stage::from_dir` accepted both during deployment; new writes always
emit the clean form via `stage_dir_name`. Lexicographic `dir >= "5_done"`
checks in lifecycle.rs become typed `matches!` checks since the new
vocabulary doesn't sort in pipeline order.
2. `crdt_state::write_item` takes typed `&Stage`, serialising via
`stage_dir_name` at the CRDT boundary. `#[cfg(test)] write_item_str`
parses legacy strings for test fixtures.
3. `WorkItem::stage()` returns typed `crdt_state::Stage`; `stage_str()`
is gone from the public API. Projection dispatches on the typed enum.
4. `frozen` becomes an orthogonal CRDT register. `Stage::Frozen` and
`PipelineEvent::Freeze`/`Unfreeze` are removed; `transition_to_frozen`/
`unfrozen` set the flag directly without touching the stage register.
5. Watcher sweep and `tool_update_story`'s `blocked` setter route through
`apply_transition` so the typed transition table validates every
stage change. `update_story` gains a `frozen` field for symmetry.
6. One-shot startup migration rewrites pre-934 directory-style stage
registers (and sets `frozen=true` on items previously at `7_frozen`).
`Stage::from_dir` drops legacy aliases. The db boundary keeps a small
normaliser so callers with legacy strings (MCP, tests) still work.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
dave
Timmy