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Card selection, selected export, draw-next, and immediate timing edits
Last updated: 2026-05-12
Goal
The default workflow should feel like reviewing cards rather than configuring a batch pipeline:
drop audio → cards appear → keep/dismiss/draw/trim → export selected
Implemented
Per-card selection
Each visible sample card now has a real checkbox. Newly produced cards are selected by default until the user changes selection manually. After the user clears or changes the selection, the UI respects that manual state.
Selected-only export
POST /api/jobs/{job_id}/export-selected renders only the selected card labels into a separate selected/ export directory:
selected/sample-pack.zip,selected/samples/*.wav,selected/reconstruction.mid,selected/target_reconstruction.wav,selected/reconstruction.wav,selected/manifest.json.
The original batch export is left untouched.
Persisted draw-next
The card “draw another” action now calls:
POST /api/jobs/{job_id}/samples/{sample_label}/draw
The backend cycles the semantic cluster representative to the next active hit and records that as a pinned representative override. Later selected/edited exports honor this choice.
Immediate trim/extend preview
Trim/extend actions now call:
POST /api/jobs/{job_id}/samples/{sample_label}/edit
The backend slices from stem.wav, writes an edited preview under overrides/hits/, updates the representative hit audio path, and returns a refreshed sample card. The user hears the edited clip immediately.
Validation
Covered by:
python3 scripts/test_selected_export_card_actions.py
The test verifies:
- extraction succeeds,
- selected-only export writes a selected pack,
- draw-next returns a playable representative WAV,
- trim/extend writes a playable edited override WAV.
Remaining work
- Add true cluster relabel/merge/split from the card columns.
- Add batch restore and bulk card operations.
- Add browser-level tests for checkbox selection and selected export.
- Add visual diff between original representative and edited representative.