Reentrant gradient checkpointing (the default) conflicts with Accelerate's
gradient accumulation context manager -- causes 'backward through graph a
second time' on the first training step. use_reentrant=False uses the
non-reentrant autograd hook path which is compatible with Accelerate >= 0.27.
- load_and_prepare_data() now accepts Path | list[Path]; single-Path callers unchanged
- Dedup by MD5(subject + body[:100]); last file/row wins (lets later runs correct labels)
- Prints summary line when duplicates are dropped
- Added _EmailDataset (TorchDataset wrapper), run_finetune(), and argparse CLI
- run_finetune() saves model + tokenizer + training_info.json with score_files provenance
- Stratified split guard: val set size clamped to at least n_classes (handles tiny example data)
- 3 new unit tests (merge, last-write-wins dedup, single-Path compat) + 1 integration test
- All 16 tests pass (15 unit + 1 integration)
Implements load_and_prepare_data (JSONL ingestion with class filtering),
compute_class_weights (inverse-frequency, div-by-zero safe), compute_metrics_for_trainer
(macro F1 + accuracy), and WeightedTrainer.compute_loss (**kwargs-safe for
Transformers 4.38+ num_items_in_batch). All 12 tests pass.
Replace CSS keyframe dismiss classes and inline cardStyle/deltaX/deltaY
with useCardAnimation composable — pickup/setDragPosition/snapBack/animateDismiss
are now called from pointer event handlers and a dismissType watcher.
TDD: 8 tests written first (red), then composable implemented (green).
Adapts to Anime.js v4 API: 2-arg animate(), object-param spring(),
utils.set() for instant drag-position updates without cache desync.
useLabelKeyboard now accepts labels as Label[] | (() => Label[]).
The keymap is rebuilt on every keypress from the getter result instead of
being captured once at construction time — so keys 1–9 now fire correctly
after the async /api/config/labels fetch completes.
LabelView passes () => labels.value so the reactive ref is read lazily.
New test: 'evaluates labels getter on each keypress' covers the async-load
scenario (empty list → no match; push a label → key fires).
