feat: add automatic sample card workflow

feat: show uploaded waveform and real progress

feat: add full-context reproduction and clearer controls

feat: add run history and online clustering

feat: replace gradio with custom extraction web app

v9: Major quality upgrade — SuperFlux onsets, transient-only NCC, mel pre-filter, MIDI quantization, singleton merging

v8: Parameter locking for auto-tune — lock any param to constrain the search

v7: Add auto-tuner — self-supervised param optimization using reconstruction quality

v6: Fix clustering for real music — auto-scale NCC window, n_clusters fallback, better defaults

v5: target cluster range + caching + average linkage — sample_extractor.py

v4: NCC clustering + full params - sample_extractor.py

v3: sample_extractor.py

v2: Update sample_extractor.py