Based on `main`. First of my U11 conversion PRs — small, green,
independently revertable.
Both heartbeat worktree-acquisition requeue sites hardcoded `"todo"`.
## Why this is critical path, not a renamed-workflow nicety
**U11 deletes the `todo` column from the builtin workflows.** After
that, these two sites would requeue every acquisition-failed card into a
column that no longer exists.
## Both sites converted together
They are different branches of the same failure:
- the **bounded-retry** requeue, and
- the **retry-cap-exhausted** terminal park.
Converting one and not the other would leave the rarer path — which
fires only after three consecutive failures, so it's the one least
likely to be noticed — still writing the literal.
Target is the KTD-10 ordering via `resolveReboundTarget` (hold → intake
→ first column): the same helper `self-healing` and `mesh-lease-manager`
already use for "requeue a recovered card", so the recovery paths cannot
drift apart.
## What is deliberately untouched
`preserveStatus: true` on the exhausted path. It exists because
reopen-to-todo semantics would otherwise wipe the `status: "failed"`
written immediately before (FN-7721) — changing the column must not
disturb that flag. A test asserts the full options object, not just the
column.
Fail-soft to the legacy id: a requeue must not be abandoned because a
workflow lookup failed, or the card is left holding a worktree it could
not acquire. Covered by a regression-floor test.
## Verification
- **Mutation-verified:** restoring the literal fails 2 of the 3 new
tests
- 7 tests green (3 new + the 4 pre-existing worktree tests, unchanged)
- tsc clean, lint clean, merge gate green (299 + 10 + 71)
## Measured progress
**2 of the 74** code-level `"todo"` sites in my unit (engine
recovery/scheduling core) are now trait-resolved.
Remaining in-unit: `self-healing` 48, `scheduler` 15, `triage` 8,
`replan-target` 1.
`stuck-task-detector` needs **no work** — all 4 of its occurrences are
comments, not code.
No changeset: `@fusion/engine` is private.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **Bug Fixes**
* Tasks now return to the workflow’s configured hold column when
heartbeat worktree acquisition fails, including workflows that use a
renamed hold column.
* Retry and retry-limit handling now preserves task progress and, when
applicable, status.
* Added a safe fallback to the default “todo” column when workflow
details cannot be resolved.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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