fix(security): remove lab instrument photos from public repo

Photos contained identifiable lab spaces and documents. Originals
preserved in private backup. No code references these files.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: sandia777

.gitignore

@@ -30,6 +30,9 @@ Thumbs.db
 *.HEIC
 *.heic
 
+# Lab photos (moved to private backup)
+lab-instruments/jpg/
+
 # Reference repos (submodules)
 Agent-S/
 UFO/