Tiered metadata display, canvas zoom/pan, and codebase cleanup
- Parser: content-based node tiering, sampler/content param splitting,
dedup, display priority sort, preview-save prefix extraction
- Logic: HTML color highlighting for metadata panel, amber indicator
for possible preview saves, clickable filmstrip with thumb cache,
wheel-on-text-widget scrolling without image nav, jump_to_index
- Canvas: right-drag zoom anchored at press point, middle-drag pan,
right-click-tap to fit, zoom lock (preserves transform + center
across image switches), wheel propagates to main window
- Layout: selectable file info labels, Lock Zoom menu action (Z),
argv image loading, event filter for key/wheel routing
- Deleted dead files: audit/testset CLIs (broken imports), metadata
dataclass, peek_* scripts, png_parser, dump TXTs, project_docs
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
