Track cutter stills and clips in repo, always render with clips

- cli.py auto-regen now produces video clips on every match (no opt-in
  flag). Best presentation comes first; speed cost (~minutes per match)
  is accepted.
- output/cutter_stills/ and output/cutter_clips/ are no longer gitignored.
  All 45 stills and 45 short MP4 previews are committed alongside the
  CUTTER_REPORT.{md,html} so the remote repo always shows the current
  state — even when the report files are inspected without running the
  generator.
- Other output/ contents (FCPXML, EDL, debug folders, HTML report) stay
  ignored.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitignore

@@ -42,3 +42,13 @@ Thumbs.db
 # Secrets / local overrides
 .env
 config.local.toml
+
+# Cutter-Report assets — these MUST be tracked so the remote repo can serve
+# the inline previews even without re-running the generator. Negated rules
+# must come after the broader ignores above.
+!output/
+output/*
+!output/cutter_stills/
+!output/cutter_stills/**
+!output/cutter_clips/
+!output/cutter_clips/**