feat(ledger): the consumer map reads transition names and concatenated prefixes (#2970)

Paying down #2962 measured `flag="unused-css"` against a hand audit and
found it had a permanent false-positive floor: roughly sixty classes it
called unused are alive and always would be, because two ordinary authoring
forms produce names no reader of `class=` attributes can see. A flag whose
list you cannot act on line by line is worse than no flag — act on it and
you delete live UI.

- A transition `name=` IS a class reference. `<Transition name="toast">`
  makes Vue apply `.toast-enter-active` and its siblings at runtime, and
  React's `<CSSTransition classNames="fade">` does the same with a different
  suffix set. Every spelling of the tag is read (`Transition`,
  `TransitionGroup`, `transition-group`), and the emitted suffix set is the
  union of Vue 3, Vue 2 and React: naming a class no rule defines costs
  nothing, since it resolves to no row. A bound `:name` stays unknowable.
- A concatenated name contributes its static head as a PREFIX reference.
  `` `status-${s}` ``, `'pri-' + p` and `class="card-{{ v }}"` all leave a
  head behind once the hole is blanked — and `_CLASS_TOKEN_RE` accepts a
  trailing hyphen, so until now the extractor emitted a junk token
  `"status-"` that matched nothing. It is now `status-*`, and
  resolve_consumers credits every row whose symbol starts with that head,
  each under the same own-file-else-fan-out rule as an exact token. `*`
  cannot occur in a class token, so the marker rides the existing
  dict[str, int] with no schema change. A head shorter than two characters
  says nothing and is dropped.

Crediting every candidate row is the honest reading: the template genuinely
does not say which one it built, and the alternative is reporting live rules
as dead. What the map still cannot see is a name assembled in a script —
`classList.add` — which stays deliberately out of scope; the skill, the
`flag=` docstring and the refresh payload docs all say so now.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/scribe/mcp/tools/shapes.py

@@ -118,8 +118,9 @@ async def list_shapes(
             whose body changed since judged (the judgment stands; confirm
             it again with classify_shapes, or re-judge); "unused-css"
             (milestone 302): live css rules no file's markup names — a
-            deletion candidate to look at, never auto-deleted (the map reads
-            templates only; a class built at runtime is invisible to it).
+            deletion candidate to look at, never auto-deleted. Transition
+            classes and concatenated names are read (#2970), so the list is
+            worth acting on; a name assembled in a script still is not.
 
     Returns {"shapes": [...], "total": N} — total counts every match, not
     just this page. Every css row carries `used_by` {count, paths} — the
@@ -305,8 +306,9 @@ async def refresh_pattern_coverage(project_id: int) -> dict:
     unclassified, repos, largest_gaps, `proposed` (canon proposals awaiting
     confirmation), `derive_groups` (the biggest repeats-with-no-canon
     families, each css one with `consumers` — the files whose markup
-    render it, milestone 302), `unused_css` (css rules no template names;
-    None where the map has no evidence of templates), `derive_new` (copies
+    render it, milestone 302), `unused_css` (css rules no template names —
+    counting a `<Transition name=>`'s generated classes and concatenated
+    names as named, #2970; None where the map has no evidence of templates), `derive_new` (copies
     that joined a family since the previous
     refresh — the drift to act on now: derive the canon, don't queue an
     audit), `proposer` (what this refresh examined) — plus