API (dev-api.py):
- GET /api/settings/fine-tune/pairs — list pairs from JSONL with index/instruction/source_file
- DELETE /api/settings/fine-tune/pairs/{index} — remove a pair and rewrite JSONL
- POST /api/settings/fine-tune/submit — now queues prepare_training task (replaces UUID stub)
- GET /api/settings/fine-tune/status — returns pairs_count from JSONL (not just DB task)
Store (fineTune.ts):
- TrainingPair interface
- pairs, pairsLoading refs
- loadPairs(), deletePair() actions
Vue (FineTuneView.vue):
- Step 2 shows scrollable pairs list with instruction + source file
- ✕ button on each pair calls deletePair(); list/count update immediately
- loadPairs() called on mount