Based on `main`. Continuing with unassigned work in my area
(scheduling/ranking core).
## Measured (drift-review tracking)
| file | comparisons before | after |
|---|---:|---:|
| `packages/core/src/assigned-task-ranking.ts` | **1** | **0** |
## What was wrong
`tierForTask` identified the two **actionable** tiers by literal id —
`in-progress` → `in_progress`, `todo` → `ready_todo` /
`partial_blocked`.
The file's own comment already recorded half of this:
> Only treating default `todo`/`in-progress` as titled hid assigned work
as a bare count
But the fix that followed was a **floor, not a fix**: unrecognised
columns fall to `other` so work stays *visible*, while a renamed hold
column loses `ready_todo` and `partial_blocked` entirely. Work that is
genuinely ready to start then ranks **below everything already in
progress**, so an agent reading its Wake Delta sees ready work buried.
Nothing errors and nothing disappears — the ordering is just wrong,
which is how it survived a comment that noticed the adjacent problem.
`partial_blocked` is the sharper loss: it's the **only** tier
distinguishing "ready" from "waiting on a dependency" for hold-column
cards, and it was unreachable for any renamed workflow.
## Two sibling files deliberately NOT converted
Checked before assuming work existed:
**`live-agent-count.ts` — already trait-driven.** Its literals are the
else-branch of `flags ? traits : literals`, and the source says why:
*"The literal fallback is fixture-only; board/store callers always
supply flags/IR."* Converting a fixture-only fallback would be churn.
**`task-priority.ts` → `sortTasksForDisplayColumn` — dead.** No
production caller. The dashboard has its own independent implementation
in `app/components/taskSorting.ts` with a richer signature
(`doneSortMode`, `isArchivedColumn`), and that's the one `Lane.tsx`
imports. Core's copy is reached only by its own tests and the barrel
export.
That's the **third dead export** this unit has found by checking
reachability before converting (after the legacy dispatcher and
`isRunnableQueuedOverlapCandidate`). Deletion is a separate concern from
conversion and is not in this PR.
## Verification
- **Mutation-verified:** not threading `roles` through to `tierForTask`
fails **4 of 6** new tests
- 13 tests green (6 new + the pre-existing ranking suite)
- merge gate green (414 + 10 + 71), tsc clean, lint clean
No changeset: `@fusion/core` is private.
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