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feat: add bounded audio sample editor with waveform selection and source statistics

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Johannes Findeisen 2026-11-06 01:01:37 +01:00
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# Audio source editor workflows
Phases 69–79 use the existing bounded mono WAV reader. Stereo input is downmixed;
these are offline control-thread tools, not stereo restoration or time stretching.
The project format remains 16. No new dependencies are required.
## Phase 69 — Source inspection
Select an audio clip and use View / Sample editor or double-click it. The modal
editor loads an independent snapshot of the complete source, up to 4,194,304 frames
(about 87 seconds at 48 kHz). Drag or enter half-open native frame bounds; zoom
1..64 and View start control the visible region. Statistics show raw mono min/max,
RMS and mean/DC before clip gain, fades or mixer processing. Display clamps to
±1; sample statistics retain finite over-range values. Editing project MIDI still
opens the piano roll. This editor does not audition or stream long files.