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/services/shape_ledger.py

@@ -279,20 +279,39 @@ def resolve_consumers(
     of that name when F defines it (a scoped rule is consumed by its own
     template); otherwise to every other file's row of that name — a shared
     sheet, or, when several files define it, all of them: the map says
-    "ambiguous" by fanning out rather than guessing one."""
+    "ambiguous" by fanning out rather than guessing one.
+
+    A token ending in ``PREFIX_MARK`` is a PREFIX reference (#2970) — the
+    static head of a name the template concatenates, `status-*` from
+    `` `status-${s}` ``. It stands for every row whose symbol starts with
+    that head, each resolved by the same own-file-else-fan-out rule. The
+    template cannot tell us WHICH of them it built, so the map credits all
+    of them rather than calling live rules unused."""
+    # Lazy, like the extract_definitions import below: coverage reaches into
+    # this module during a refresh, so neither may import the other at load.
+    from scribe.services.coverage import PREFIX_MARK
+
     by_symbol: dict[str, list[tuple[int, str]]] = {}
     for sid, path, symbol in css_rows:
         by_symbol.setdefault(symbol, []).append((sid, path))
     out: dict[tuple[int, str], int] = {}
+
+    def credit(rows: list[tuple[int, str]], consumer: str, count: int) -> None:
+        own = [sid for sid, path in rows if path == consumer]
+        for sid in own or [sid for sid, _path in rows]:
+            out[(sid, consumer)] = out.get((sid, consumer), 0) + int(count)
+
     for consumer, tokens in references.items():
         for token, count in tokens.items():
-            rows = by_symbol.get(token)
-            if not rows:
+            if token.endswith(PREFIX_MARK):
+                head = token[: -len(PREFIX_MARK)]
+                for symbol, rows in by_symbol.items():
+                    if symbol.startswith(head):
+                        credit(rows, consumer, count)
                 continue
-            own = [sid for sid, path in rows if path == consumer]
-            targets = own or [sid for sid, _path in rows]
-            for sid in targets:
-                out[(sid, consumer)] = out.get((sid, consumer), 0) + int(count)
+            rows = by_symbol.get(token)
+            if rows:
+                credit(rows, consumer, count)
     return out