chore: ignore root scratch and visual index blob

Screenshots, probe JSON dumps, and the 479MB visual index sqlite
(over GitHub's 100MB cap; baked at image build, not tracked).

Author: NorthernLightx

.gitignore

@@ -121,3 +121,15 @@ tools/_mineru_venv/
 tools/_mineru_out/
 # Local agent/workflow run artifacts.
 output/
+
+# Local debug scratch at repo root: screenshots, probe JSON dumps. Never deployed
+# (not in the Dockerfile COPY list).
+/*.png
+/*.jpeg
+/.tmp_*.json
+/figs*.json
+/*_tmp.json
+qdrant_local_old/
+# GPU-built visual page index: a single ~479MB sqlite, over GitHub's 100MB file
+# cap. Baked into the deploy image at build time, not tracked (ADR 0028).
+qdrant_local/collection/rag_corpus_visual/