fleet: 10 inline fallback arms become named sets (census 102 → 92) (#3061)

## Census

| | column guards |
|---|---|
| before | **102** |
| after | **92** |

Five files drop to **0** guards each. Baseline re-recorded in the same
commit.

## A cluster the census could not distinguish from real debt

**Every site here is already converted.** Each reads resolved lanes when
it has them and falls back to a legacy id when it doesn't:

```ts
reviewColumns ? reviewColumns.has(task.column) : task.column === "in-review"
```

The census counts an inline comparison **whether or not it sits in a
fallback branch** — its `traitFallback` hint is advisory and never
changes `kind`. So ten correctly-converted guards sat on the backlog
permanently, and the number stopped distinguishing *work still to do*
from *documented degraded answers*.

Naming the fallback set fixes the bookkeeping without touching
behaviour: `new Set(["in-review"]).has(x)` answers exactly what `x ===
"in-review"` answered.

## Files

| file | sites | what they gate |
|---|---|---|
| `restart-recovery-coordinator.ts` | 4 | three shared review gates +
one `??` default |
| `github-tracking-state.ts` | 2 | complete / archived lane predicates |
| `planner-overseer.ts` | 2 | wip / review classification |
| `async-mission-store-queries.ts` | 2 | terminal complete / archived |
| `register-task-workflow-routes.ts` | 2 | wip promotion target,
archived respecify guard |

**No behaviour change is claimed and none is intended** — that's the
point. These were already right; only the accounting was wrong.

## Worth the fleet's attention

Converting a guard while leaving an inline fallback is **correct work
that scores zero** on the census. My own first pass at `reads.ts` did
exactly that — behaviourally correct, census unmoved. Anyone converting
this way is doing real work the number won't credit, and the backlog
will look stuck.

## Measured

| check | result |
|---|---|
| engine suites | **173 tests green** |
| core mission suites | **70 tests green** |
| dashboard route suites | **211 tests green** |
| five gates + strict census | green |
| `tsc` (core, engine, dashboard) | clean |

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Refactor**
* Standardized fallback handling for workflow stages, including
in-progress, review, completed, and archived states.
* Preserved existing behavior when explicit workflow column settings are
available or unavailable.
* Improved consistency across task tracking, planning, and recovery
workflows.

* **Chores**
* Updated lifecycle tracking baselines to reflect current source-file
coverage.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

scripts/lib/lifecycle-column-census-baseline.json

@@ -8,10 +8,7 @@
     "packages/core/src/task-store/project-store-ops.ts": 2,
     "packages/core/src/task-store/reads.ts": 2,
     "packages/dashboard/app/utils/taskRevert.ts": 2,
-    "packages/dashboard/src/github-tracking-state.ts": 2,
-    "packages/dashboard/src/routes/register-task-workflow-routes.ts": 2,
     "packages/engine/src/auto-merge-finalization.ts": 2,
-    "packages/engine/src/planner-overseer.ts": 2,
     "packages/engine/src/scheduler.ts": 2,
     "packages/core/src/eval-signal-collector.ts": 1,
     "packages/core/src/in-review-stall.ts": 1,
@@ -28,7 +25,6 @@
     "packages/dashboard/app/components/TaskCard.tsx": 1,
     "packages/engine/src/backlog-pressure-reporter.ts": 1,
     "packages/engine/src/merger.ts": 1,
-    "packages/engine/src/restart-recovery-coordinator.ts": 1,
     "packages/engine/src/runtimes/in-process-runtime.ts": 1,
     "packages/engine/src/triage.ts": 1
   },