- id-based incremental (new_ids - prev_integrated_ids) with --full flag, kindle-id tag, deletions handling
- Mappings tab with delete to return to Conflicts, sorted by updated_at newest first
- Integrated tab with Added On / Integrated dates and Citekey
- black over white iA Writer Duo theme, candidate-list per-row Use buttons, resizable/sortable tables
- Settings editable + save, Artifacts Open/Reveal, Re-import bar with last file reuse
- Fix override single-field validation and ignore cleanup
