fleet: github-tracking-comments.ts 9 → 3 — and the sync-filter class is now in a FOURTH file (~25 sites on one decision) (#2715)

Claiming the **github-tracking pair**. This converts the comments half;
the reconciler half is the flagged class, with the evidence below.

## Census before/after

| | before | after |
|---|---:|---:|
| `github-tracking-comments.ts` | **9** | **3** |

Baseline re-recorded; `--strict` exits 0.

## Converted: 6

The `event.to === "in-progress"` / `=== "done"` sites in
`handleTaskMoved`, to the **wip** and **complete** roles. One
resolution, placed **immediately after the tracking-enabled gate** — so
a move on an **untracked** task pays nothing, which is most moves in
most projects.

## Deliberately not converted: 2 — the ordering is the reason

```ts
if (event.to !== "in-progress" && event.to !== "done") return;   // line 232
```

This runs **before** the tracked-task gate. Converting it moves the
resolution ahead of that gate and makes **every task move in the
project** resolve a workflow just to decide the task has no GitHub
issue. That's a real cost on the hottest event in the system, to convert
a guard whose only job is a cheap filter. Recorded at the site.

## The remaining 1

**Line 165** — `transition === "done"` inside `formatTrackingComment`, a
**pure formatter** with no store and no task. Same shape as
`project-engine.ts:2555`. Threading a resolution into a formatter to
pick a string is the wrong trade.

## `github-tracking-reconciler.ts` (9) — not claimed here, and here is
why

All nine are:

```ts
.filter((task) => task.column === "done" || task.column === "archived")
```

Synchronous filters over task **lists**, where per-task resolution is N
awaits inside a sync predicate.

**This is the fourth file with that exact shape** — after `store.ts`
(#2709), and the dependency pairs in `TaskDetailModal` (#2696) and
`register-task-workflow-routes` (#2700). By my count **roughly 25 sites
across four files now wait on one decision**:

1. **Prefetch lifecycle columns alongside the task list** and pass a
resolved map into these predicates — keeps them synchronous, one
resolution per *distinct workflow* rather than per task. This is the one
I'd argue for.
2. Make the predicates async and accept per-task resolution.

It's a design change, and four workers guessing separately is exactly
how two halves of one rule drift apart. One decision covers all of them.

## Verification

`pnpm test:gate` **GREEN** (158 + 10 + 487 + 71) ·
`github-tracking-comments` + `github-issue-comment` **81/81** · `pnpm
lint` clean · dashboard `tsc` clean · `--strict` exits 0.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

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

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

@@ -7,7 +7,6 @@
     "packages/engine/src/scheduler.ts": 12,
     "packages/core/src/task-store/async-comments-attachments.ts": 9,
     "packages/dashboard/app/components/TaskContextMenu.tsx": 9,
-    "packages/dashboard/src/github-tracking-comments.ts": 9,
     "packages/dashboard/src/github-tracking-reconciler.ts": 9,
     "packages/engine/src/notification/notification-service.ts": 9,
     "packages/core/src/default-workflow-hooks.ts": 7,
@@ -31,7 +30,7 @@
     "packages/core/src/task-store/task-store-helpers.ts": 4,
     "packages/dashboard/app/components/TaskReviewTab.tsx": 4,
     "packages/dashboard/app/components/taskSorting.ts": 4,
-    "packages/dashboard/src/gitlab-tracking-comments.ts": 4,
+    "packages/dashboard/src/gitlab-tracking-comments.ts": 1,
     "packages/dashboard/src/routes/register-git-github.ts": 4,
     "packages/engine/src/agent-heartbeat.ts": 4,
     "packages/engine/src/replan-target.ts": 4,
@@ -116,6 +115,7 @@
     "packages/dashboard/app/utils/stalePausedReviewCopy.ts": 1,
     "packages/dashboard/app/utils/taskStuck.ts": 1,
     "packages/dashboard/src/github-issue-comment.ts": 1,
+    "packages/dashboard/src/github-tracking-comments.ts": 1,
     "packages/dashboard/src/gitlab-issue-comment.ts": 1,
     "packages/dashboard/src/gitlab-source-issue-reconciler.ts": 1,
     "packages/dashboard/src/knowledge-index-refresh.ts": 1,