chore(gitignore): per-stage lane output dirs (characters/work/*/v0N/)

characters/work/lena/v02/ is 1,019 MB — 15 .blend snapshots of the same ~883k-vertex
mesh plus their .glb exports. working-files.md puts per-attempt .blend in the SCRATCH
tier, 'never committed': the NN_*.py recipes are the history and regenerate any of
them from masters/55_fullres_v02.blend, which is pinned and tracked. The lane already
reached 3.0 GB once, 2.2 GB of it .blend files, which is why the rule exists.

git add -f any artifact that gets registered in characters/REGISTRY.md. None is yet —
the v03 body is HELD with known defects.

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

.gitignore

@@ -14,6 +14,17 @@ __pycache__/
 **/dbg_*/
 **/probe_*/
 
+# Per-stage lane output dirs — the SCRATCH tier of working-files.md, in bulk.
+# characters/work/lena/v02/ alone is 1,019 MB: 15 .blend snapshots of the same
+# ~883k-vertex mesh (48_headsafe, seamed, reatlased, 52_transplant, 55_fix1/2/3,
+# rigged, rigged_fix1/2/3, rigged_fullres, ...) plus their .glb exports. Exactly the
+# growth the rule was written to stop — the lane hit 3.0 GB once before, 2.2 GB of it
+# .blend files. The 48-55 recipes ARE the history and rebuild any of these from
+# masters/55_fullres_v02.blend, which is pinned in .lanekeep and tracked.
+# If a v02 artifact is ever registered in characters/REGISTRY.md, `git add -f` it —
+# nothing here is registered yet (the v03 body is HELD with known defects).
+characters/work/*/v0[0-9]/
+
 # Vendor application install — AccuRig (~1 GB of Reallusion program files).
 # Re-downloadable from Reallusion; nothing here is authored by us.
 /accurig/