Luci · Caveman mode on. Code change to MC → dev-loop mandato
Luci
Caveman mode on. Code change to MC → dev-loop mandatory. Invoke first, then investigate.
Luci
Tier 2/3. First investigate root cause. Explore 409 source.
Luci
Pool-2 worktree stale (origin/main at Feb 13, no app.py/mc_pickup.py). Real code lives in live checkouts. Investigate root cause there first.
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Use Grep tool for clean output.
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Files huge (mc_pickup 320KB, app.py 504KB). Delegate investigation to Explore agent per delegation thresholds.
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Root cause clear. Key insight: 409 `RuntimeBusyError` after live tmux exists = runtime IS up and working. Reverting to `todo` orphans it. Fix = detect live runtime → **normalize** (keep in_progress, set worker_pid, mark runtime running) instead of revert.
File lives in workspace repo, not this stale mission-control pool worktree. Verify checkout + read target regions.
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Workspace repo `luci-workspace` on master, mc_pickup.py lives here. Dirty tree has unrelated data files — I commit only mc_pickup.py + test. Read target regions.
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Read the key helpers: `_send_ticket_to_tmux_runtime`, `_active_ticket_runtime_session`, tmux liveness, and `_dispatcher_force_patch_ticket`.
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RTK mangles grep. Load Grep tool.
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Now read these helper regions.
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Read `_dispatcher_force_patch_ticket` and `_dispatch_failure_retry_status`.
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Read dispatch-cycle entry and `_dispatch_failure_retry_status` to find reconcile hook point.
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Read `dispatch()` start to place the reconcile hook.
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Read `active_workers_by_db` and check timestamp helpers to keep normalize consistent.
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Now I understand fully. `active_workers_by_db` already counts in_progress tickets backed by a live interactive runtime — so normalizing a drifted ticket to `in_progress` with a refreshed runtime row is self-consistent. The drift gap = ticket in `todo`/`needs_input` while a live runtime exists. Two fixes sharing one normalize helper:
1. Adopt-on-409 inside `_send_ticket_to_tmux_runtime` (stops the dispatch-revert loop).
2. Proactive reconcile pass in `dispatch()` (heals already-drifted rows).
Insert helpers before `_send_ticket_to_tmux_runtime`.
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Edit consistent with worker-system architecture. Now wire adopt-on-409 into the send except block.
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Wire reconcile pass into `dispatch()` after the killswitch gate.
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Verify syntax + imports.
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Now write the test. Read the existing pickup regression test to match harness patterns.
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Test imports `app`. My code is in `mc_pickup.py` (workspace root). Write a dedicated test exercising the new helpers against a real temp sqlite DB, mocking only the external boundaries (tmux, mc_request HTTP).
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5 pass. Smoke the reconcile query against the live DB (read-only — count candidates, no mutation) and run existing pickup regression tests.
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Zero current drift (controller already healed MC-4402); query runs clean on live schema. Run adjacent recovery/pickup tests for regressions.
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All green (21 passed), no regressions.
**My position before review** (anchoring guard): root cause = split-brain — claim CAS flips ticket→in_progress, then `runtime/send` 409 (RuntimeBusyError = runtime alive, mid-turn) triggers revert→todo, orphaning the live pane; next cycle re-claims→re-409 loop. Fix adopts the live runtime instead. Strongest reasons: (1) 409-busy means runtime IS alive, so adopting matches reality; (2) reconcile is idempotent + gated on real tmux liveness; (3) `active_workers_by_db` already treats in_progress+live-runtime as live, so normalize is internally consistent. Main risk: adopting a zombie pane (exists but Claude exited) — mitigated by `_active_ticket_runtime_session` staleness guard + double `_tmux_has_session` check; residual handled by the existing TTL park.
Council gate via a code-reviewer subagent on the diff.
Luci
Review found 2 real blockers I must fix:
- **#1 CRITICAL** — `_live_runtime_pid` falls back to the tmux *pane shell* PID, which stays alive after Claude exits → resurrects ghosts, refreshes TTL, masks for 90 min.
- **#3 IMPORTANT** — reconcile can regress an `in_review` ticket back to `in_progress` (force-patch only guards done/cancelled/blocked).
Before redesigning around "adopt only if the real Claude pid is alive", I must verify interactive `runtime_sessions` rows actually carry a live Claude pid — else I'd kill live runtimes. Check live DB + how the interactive runtime records pid.
Luci
Confirmed: ticket interactive sessions reliably carry a real Claude pid (`running` = 0 null/2). Chat sessions have null pid but `ticket_id IS NULL`, so my JOIN/`_active_ticket_runtime_session` never touch them. So a **pid-alive** liveness check is sound and safe.
Redesign per review: adopt **only if the recorded Claude pid is alive** (drop the unsafe pane-shell-pid fallback), plus status + owner guards. Decline otherwise — no destructive kills (keeps scope tight; existing TTL handles dead panes; a dead pid causes no 409-busy loop anyway since a dead Claude can't be "busy"). Re-read current helpers to edit precisely.
Luci
Now rewrite the helper block: replace `_live_runtime_pid` with `_pid_alive`, and harden `_normalize_ticket_to_live_runtime` with pid-alive liveness + status/owner guards.
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Update tests to the new pid-alive design + add coverage for the two review blockers (dead-pid decline, in_review no-regress).
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8 passed (now covers dead-pid, in_review, owner-steal). Re-run adjacent suites + re-confirm with reviewer that blockers are closed.
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Reviewer re-checking in background. Diff is tested (8 new + 16 adjacent pass). Awaiting verdict before commit.
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Signature confirmed. Awaiting reviewer verdict.
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Reviewer verdict: **CLEAN** on #1 and #3, ghost-pane decline acceptable. One sub-threshold note: GET-failure fallback (`cur={}`→`cur_status=""`) is permissive and would adopt. I'll close it conservatively — if the state GET fails, decline (can't verify the ticket hasn't advanced).
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All 18 pass; review CLEAN. Commit surgically — only `mc_pickup.py` (luci-workspace repo) and the new test (mission-control repo), leaving unrelated dirty data files untouched.
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Both pushed. Running mc_pickup is the file I edited, so next scheduler tick picks it up — no restart needed (fresh process per tick). Controlled live smoke of the reconcile pass (0 candidates → must no-op cleanly end-to-end):
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Live smoke clean — reconcile runs end-to-end, heals 0 (no current drift), no errors; `_pid_alive` correct. Fix is deployed (running mc_pickup IS the edited file; next scheduler tick uses it). Log activity, then report.
Luci
Logged. Reporting completion.