chore(traces): put TRACES tags on their own line; regenerate the report

The parser reads a tag up to end of line, so `# TRACES: GR-004 | SR-001 —
prose` swallowed the prose into the tag and the row went unmatched. Splitting
the comment leaves the tag greppable by the same pattern as the code tags and
the commit trailers, which is the point of the house format.

Mechanical throughout; no logic touched. The regenerated report reflects this
session's new tags: 137 -> 148 found, and one more tagged-but-unexecuted, which
is the SuperHero accuracy assertion that is documented but not yet a test.

scripts/optimizer/fetch_missing_actors.py

@@ -106,7 +106,8 @@ def fetch(missing_path, out_path, token, build_dir, models_dir, arcface,
                   f"(wiki={n_via_wikidata}) no_tmdb={n_no_tmdb} no_img={n_no_img} "
                   f"no_face={n_no_face}", file=sys.stderr)
 
-    # TRACES: GR-004 | SR-001 — the legacy JSON gallery carries the same stamp as
+    # TRACES: GR-004 | SR-001
+    # the legacy JSON gallery carries the same stamp as
     # the HDF5 one; src/gallery/gallery_store.cpp reads it from either.
     Path(out_path).write_text(json.dumps({"embedder": stamp, "actors": actors}, indent=2))
     n_emb = sum(len(a["embeddings"]) for a in actors)
@@ -120,7 +121,8 @@ def fetch(missing_path, out_path, token, build_dir, models_dir, arcface,
 def merge(base_path, add_path, out_path):
     base = json.loads(Path(base_path).read_text())
     add = json.loads(Path(add_path).read_text())
-    # TRACES: GR-004 | SR-001 — merging two galleries from different models makes
+    # TRACES: GR-004 | SR-001
+    # merging two galleries from different models makes
     # ONE file containing two incompatible embedding spaces. Nothing downstream can
     # ever untangle that, so this is the one place the check must run before, not
     # after, the write.

scripts/optimizer/optimize.py

@@ -199,7 +199,8 @@ def main():
         if not Path(f["dump"]).exists():
             sys.exit(f"[opt] missing dump for {f['name']}: {f['dump']}")
 
-    # TRACES: GR-004 | SR-001 — every (dump, gallery) pair is checked ONCE here,
+    # TRACES: GR-004 | SR-001
+    # every (dump, gallery) pair is checked ONCE here,
     # before the first evaluation. A DE sweep is thousands of replays; discovering
     # a cross-model pair at the end (or never) means every number it produced was
     # noise. Each replay subprocess re-checks its own pair anyway.

scripts/optimizer/reembed_gallery.py

@@ -59,7 +59,8 @@ def main():
     ref = load_gallery_hdf5(Path(args.ref))
     images_root = Path(args.images)
     embedder = load_embedder(args.build_dir, args.models_dir, args.arcface)
-    # TRACES: GR-004 | SR-001 — this script exists to produce a gallery in a
+    # TRACES: GR-004 | SR-001
+    # this script exists to produce a gallery in a
     # DIFFERENT model's space from the reference. The output must therefore never
     # inherit the reference's stamp; it carries the stamp of --arcface, which is
     # the whole point of the bake-off being safe to run.

scripts/optimizer/replay.py

@@ -110,7 +110,8 @@ def replay(dump_path: str, gallery: str, cfg: dict, build_dir: str, stop: bool =
     sys.path.insert(0, build_dir)
     import sae_kpn
 
-    # TRACES: GR-004 | SR-001 — checked here, before any network is built, so a
+    # TRACES: GR-004 | SR-001
+    # checked here, before any network is built, so a
     # cross-model replay dies with one readable error instead of producing a
     # plausible-looking score. add_identity_matcher re-checks it C++-side below;
     # that is the backstop for any other caller of the binding.
@@ -249,7 +250,8 @@ def main():
     # per-film gallery expansion: promotes pose-varied views of confidently-identified
     # actors into an in-memory annex, recovering ~+4 recall at no precision cost.
     p.add_argument("--expand-gallery", action="store_true")
-    # TRACES: GR-004 | SR-001 — promote an unprovable gallery/dump binding from a
+    # TRACES: GR-004 | SR-001
+    # promote an unprovable gallery/dump binding from a
     # loud warning to a hard error. Measurement sweeps should set this (or
     # SAE_REQUIRE_GALLERY_STAMP=1) so no number comes from an unbound pair.
     p.add_argument("--require-gallery-stamp", action="store_true")