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Phase 6: Add WAV clips, graph playback and bounded recording

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Johannes Findeisen 2026-10-27 00:31:03 +01:00
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@ -128,3 +128,29 @@ and region, moved it one bar and zoomed the canvas. No dependencies were added.
Phase 6 will add audio assets and recording. Silent arrangement regions, fixed
tempo/4/4, no undo, no persisted GUI layout, and unverified physical-device
playback/endurance remain explicit limits.
## Phase 6 verification
```sh
make all test gui debug test-gui test-gui-jack test-jack-audio
make BUILD_DIR=build/nojack PKG_CONFIG=false all test gui test-gui
make BUILD_DIR=build/tsan CC=cc CFLAGS='-O1 -g -std=c99 -Wall -Wextra -Wpedantic -Wconversion -Wshadow -Iinclude -fsanitize=thread' LDFLAGS='-fsanitize=thread' build/tsan/test_audio build/tsan/test_realtime
./build/tsan/test_audio
./build/tsan/test_realtime
```
No new dependency is required for WAV import, recording or playback. New audio
sources remain C99; only GUI controls use C++/FLTK. test_audio covers decoder
samples, truncations/nonfinite/unsupported input, resampling, trim/overlap,
missing assets and concurrent recording. test_backend records known callback
input, saves/reopens and checks exact graph output. Project tests cover v1
migration and 1024 maximum-length asset paths in a valid v2 file.
The live test-jack-audio target connects only its software clients and checks
record -> WAV -> saved/reopened project -> graph playback. GUI/JACK tests also
record, finalize, save and reopen a take without hardware routing. Clang
ASan/UBSan passes the core and GUI tests (GUI retains the existing fontconfig-only
LSan suppression). ThreadSanitizer passes the concurrent recorder and existing
realtime handoff tests. Hardware capture/playback, disk endurance and real server
loss during recording remain unverified. See AUDIO_FILES.md.