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>

tests/test_shape_ledger.py

@@ -473,6 +473,40 @@ def test_resolve_consumers_prefers_the_own_file_and_fans_out_for_shared_names():
     assert all(sid != 6 for sid, _ in resolve_consumers(css_rows, refs))
 
 
+def test_resolve_consumers_credits_every_row_a_prefix_could_have_built():
+    """#2970: `status-${s}` names a class the map cannot pin down, so the
+    prefix reference `status-*` credits every row whose symbol starts with
+    the head — each under the same own-file-else-fan-out rule. Crediting all
+    of them is the honest reading: the alternative is calling live rules
+    unused, which is what the flag existed to avoid."""
+    from scribe.services.shape_ledger import resolve_consumers
+    css_rows = [
+        (1, "assets/app.css", "status-done"),
+        (2, "assets/app.css", "status-todo"),
+        (3, "v/Board.vue", "status-done"),      # a scoped copy of one of them
+        (4, "assets/app.css", "btn-primary"),
+        (5, "assets/anim.css", "toast-enter-active"),
+    ]
+    # A file that defines none of them fans out across every match.
+    assert resolve_consumers(css_rows, {"v/List.vue": {"status-*": 2}}) == {
+        (1, "v/List.vue"): 2, (2, "v/List.vue"): 2, (3, "v/List.vue"): 2,
+    }
+    # A file that DOES define one keeps the own-file rule, per symbol: its own
+    # status-done row, and the shared status-todo it does not define.
+    assert resolve_consumers(css_rows, {"v/Board.vue": {"status-*": 1}}) == {
+        (3, "v/Board.vue"): 1, (2, "v/Board.vue"): 1,
+    }
+    # A prefix that matches nothing is silent, and exact tokens are untouched.
+    assert resolve_consumers(css_rows, {"v/X.vue": {"zz-*": 1}}) == {}
+    assert resolve_consumers(css_rows, {"v/X.vue": {"btn-primary": 3}}) == {
+        (4, "v/X.vue"): 3,
+    }
+    # A transition class resolves exactly, like any other name.
+    assert resolve_consumers(css_rows, {"c/Toast.vue": {"toast-enter-active": 1}}) == {
+        (5, "c/Toast.vue"): 1,
+    }
+
+
 def test_consumer_edges_table_cascades_with_the_shape():
     from scribe.models import Base
     from scribe.models.code_shape import CONSUMER_BASES, CodeShapeConsumer