M08 Toolcalls — Snapshot Threading into process_images_inner

Implementation toolcalls for Cursor execution.

Timestamp	Tool	Purpose	Files	Status
2026-03-11	git checkout	Create/use m08-snapshot-threading branch	—	Done
2026-03-11	search_replace	Migrate save-related opts to p.opts_snapshot in process_images_inner	modules/processing.py	Done
2026-03-11	ruff check	Lint processing.py (pre-existing F811 in file)	modules/processing.py	Done
2026-03-12	gh pr create	Create PR #24 m08-snapshot-threading → main	—	Done
2026-03-12	gh run watch	Monitor Linter 22984306617	—	Done ✓
2026-03-12	gh run watch	Monitor Smoke Tests 22984306614	—	Done ✓
2026-03-12	write	Generate M08_run1.md CI report	docs/milestones/M08/M08_run1.md	Done