Ignore additional JSON config files

- playlists.json (runtime data)
- metadata_cache.json (generated cache)
- tsconfig.json (TypeScript config - use frontend's)
- dune-weaver-touch/*.json (touch app configs)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -6,9 +6,15 @@ __pycache__/
 .idea
 # Ignore state and data JSON files, but not package.json
 state.json
+playlists.json
+metadata_cache.json
+tsconfig.json
 *.jsonl
 !package.json
 !package-lock.json
+
+# Touch app config files
+dune-weaver-touch/*.json
 .venv/
 patterns/cached_svg/
 patterns/cached_images/custom_*