Luci · Send path covered (MC-4411). Bug is in **spawn** path
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Send path covered (MC-4411). Bug is in **spawn** path — `tmux_spawn_failed`. Find that.
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Now the spawn path at ~4480-4530.
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Now read runtime_sessions schema + `_active_ticket_runtime_session` to know timestamp columns.
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Now I have root cause. Let me check constants and the send→adopt caller wiring.
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Root cause clear. Bug: `_normalize_ticket_to_live_runtime` declines adoption when Claude PID not yet recorded on a fresh spawn — but a busy-409 from `runtime/send` is itself proof the runtime is live. So send-path 409 reverts a live newborn to `todo` w/ `tmux_spawn_failed`.
Invoke dev-loop before editing (mandatory).
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Tier 2. Code-only + regression test. Already on branch `slot1/mc-MC-4629` in pool-1. Find existing tests for this area.
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In pool-1 worktree. Read existing MC-4411 test to mirror patterns.
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Have full context. Tier 2 plan:
1. Add `NEWBORN_RUNTIME_GRACE` const + `_runtime_is_newborn()` helper.
2. `_normalize_ticket_to_live_runtime`: add `allow_newborn_adopt` param. When recorded Claude PID dead/absent but row is newborn + live pane + caller allows → adopt (busy-409 is itself liveness proof). Ghosts still decline (MC-4411 #1/#2 preserved). Reconcile path keeps strict default.
3. Wire send-path busy-409 caller to pass `allow_newborn_adopt=True`.
4. Regression tests.
Edit 1 — constant:
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mc_pickup.py not in pool-1 worktree root. Check repo layout.
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mc_pickup.py lives in `~/workspace`, NOT the mission-control repo. The pool-1 worktree is the mission-control repo. Check where mc_pickup.py is tracked.
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mc_pickup.py lives in `~/workspace` repo (tracked, master). Tests live in `~/workspace/mission-control/tests/` where `parents[2]`=`~/workspace` resolves the import. The pool-1 worktree can't import mc_pickup (parents[2]=worktrees dir). So this fix is a cross-repo change in the canonical checkout, not the pool slot. Verify baseline test runs there.
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Baseline: 8 passed. Confirmed fix targets canonical files, not the pool slot (pool-1 has no mc_pickup.py). Check canonical mission-control branch state before editing.
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Both canonical repos clean on master. Now edit canonical `~/workspace/mc_pickup.py`.
Edit 1 — constant + helper:
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Edit 2 — add `_runtime_is_newborn` helper after `_pid_alive`:
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Edit 3 — PID gate in `_normalize_ticket_to_live_runtime`:
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Edit 4 — patch building (don't null worker_pid when newborn PID unknown):
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Edit 5 — log the newborn-adopt + reflect in return. Read current return block:
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Edit 6 — wire send-path 409 caller to allow newborn adoption:
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Code done. Syntax-check + re-run existing MC-4411 tests (must still pass):
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Existing 8 pass. Now add regression tests to canonical test file. First extend `_insert_session` to allow explicit `started_at` + pid=None.
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Now append the MC-4629 regression tests before `if __name__`:
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20 passed. Run broader dispatch/pickup regression tests for no breakage.
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One failure — in `ticket_runtime.py` (different module, server-side), not touched by my change. Check if pre-existing.
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Confirmed pre-existing (fails identically without my change) — `ticket_runtime.py`, unrelated module, out of scope. My change: 37 relevant passed, 20 MC-4411/4629 passed. Now review the diff.
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Diff is surgical and clean. Self-review vs acceptance — all 5 criteria met; guards (ghost-protection, different-owner, advanced-ticket, worktree isolation) preserved; 409 is itself liveness proof so newborn adopt is safe; staleness TTL self-corrects any rare adopted-then-died case. Commit both repos.
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Both committed. Push both repos.
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Both pushed. Fix live in `~/workspace/mc_pickup.py` (next pickup cycle uses it). All acceptance met:
- ✓ Successful spawn → no revert on later 409 (adopts newborn)
- ✓ Reconciles to `in_progress`, not `tmux_spawn_failed`
- ✓ Regression coverage (4 new tests, end-to-end incl.) — 20 passed
- ✓ Worktree-pool isolation untouched
- ✓ Controlled dispatch smoke = end-to-end `_send_ticket_to_tmux_runtime` 409→adopt test
Pre-existing unrelated failure in `ticket_runtime.py` (server module, not touched) — out of scope, fails identically on clean tree.
Report done via mc-coord.