fix: make test_demo use workspace files, remove obsolete tools/test_demo.*

- test_demo now uses workspaces/test/{timeline.seq,music.track}
- Removed tools/test_demo.{seq,track} (no longer used)
- Updated docs to reference workspace files
- Changes to workspaces/test/timeline.seq now trigger rebuild

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

5 files changed, 9 insertions, 52 deletions

diff --git a/cmake/DemoExecutables.cmake b/cmake/DemoExecutables.cmake
index 69e4a30..223f406 100644
--- a/cmake/DemoExecutables.cmake
+++ b/cmake/DemoExecutables.cmake
@@ -47,21 +47,21 @@ endif()
 # test_demo - Audio/Visual Sync Tool
 # =============================================================================
 
-# Timeline generation
-set(TEST_DEMO_SEQ_PATH ${CMAKE_CURRENT_SOURCE_DIR}/tools/test_demo.seq)
+# Timeline generation (use test workspace)
+set(TEST_DEMO_SEQ_PATH ${CMAKE_CURRENT_SOURCE_DIR}/workspaces/test/timeline.seq)
 set(GENERATED_TEST_DEMO_TIMELINE_CC ${CMAKE_CURRENT_SOURCE_DIR}/src/generated/test_timeline.cc)
 add_custom_command(
     OUTPUT ${GENERATED_TEST_DEMO_TIMELINE_CC}
     COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_SOURCE_DIR}/src/generated
     COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/tools/seq_compiler.py
             ${TEST_DEMO_SEQ_PATH} --output ${GENERATED_TEST_DEMO_TIMELINE_CC}
-    DEPENDS ${TEST_DEMO_SEQ_PATH}
+    DEPENDS ${TEST_DEMO_SEQ_PATH} src/gpu/demo_effects.h
     COMMENT "Compiling test_demo sequence..."
 )
 add_custom_target(generate_test_demo_timeline ALL DEPENDS ${GENERATED_TEST_DEMO_TIMELINE_CC})
 
-# Music generation
-set(TEST_DEMO_TRACK_PATH ${CMAKE_CURRENT_SOURCE_DIR}/tools/test_demo.track)
+# Music generation (use test workspace)
+set(TEST_DEMO_TRACK_PATH ${CMAKE_CURRENT_SOURCE_DIR}/workspaces/test/music.track)
 set(GENERATED_TEST_DEMO_MUSIC_CC ${CMAKE_CURRENT_SOURCE_DIR}/src/generated/test_demo_music.cc)
 add_custom_command(
     OUTPUT ${GENERATED_TEST_DEMO_MUSIC_CC}
diff --git a/doc/WORKSPACE_SYSTEM.md b/doc/WORKSPACE_SYSTEM.md
index 64ba120..a0077d2 100644
--- a/doc/WORKSPACE_SYSTEM.md
+++ b/doc/WORKSPACE_SYSTEM.md
@@ -101,8 +101,6 @@ This makes it hard to:
 
 /tools/
   originals/                 # Source audio files (.wav, .aif)
-  test_demo.seq              # Test demo timeline
-  test_demo.track            # Test demo music
 ```
 
 ### Workspace Configuration
diff --git a/doc/test_demo_README.md b/doc/test_demo_README.md
index 6ccada0..3c4631d 100644
--- a/doc/test_demo_README.md
+++ b/doc/test_demo_README.md
@@ -85,9 +85,9 @@ Music time drifts from physical time. Patterns respect tempo scaling.
 - Fine-grained: Millisecond-resolution analysis, detect jitter
 
 ## Files
-- `src/test_demo.cc`: Main executable (~220 lines)
-- `assets/test_demo.track`: Drum pattern
-- `assets/test_demo.seq`: Visual timeline
+- `src/app/test_demo.cc`: Main executable (~220 lines)
+- `workspaces/test/music.track`: Drum pattern
+- `workspaces/test/timeline.seq`: Visual timeline
 - `src/generated/test_demo_*.cc`: Generated code
 
 ## Verification
@@ -111,7 +111,7 @@ Music time drifts from physical time. Patterns respect tempo scaling.
 **Flash before audio:** Reduce ring buffer size (`ring_buffer.h`)
 **Flash after audio:** Increase pre-fill (`audio_render_ahead()`)
 **No flash:** Increase `visual_peak` multiplier (currently 8.0×)
-**A4 not audible:** Increase volume in `test_demo.track`
+**A4 not audible:** Increase volume in `workspaces/test/music.track`
 **Empty log:** Ensure demo runs ≥0.5s
 
 ## Design Rationale
diff --git a/tools/test_demo.seq b/tools/test_demo.seq
deleted file mode 100644
index b1d17c8..0000000
--- a/tools/test_demo.seq
+++ /dev/null
@@ -1,5 +0,0 @@
-# Minimal timeline for audio/visual sync testing (v2)
-# BPM 120 (set in test_demo.track)
-
-SEQUENCE 0.0 0 "test_loop"
-  EFFECT + FlashEffect source -> sink 0.0 16.0
diff --git a/tools/test_demo.track b/tools/test_demo.track
deleted file mode 100644
index 6ae5c67..0000000
--- a/tools/test_demo.track
+++ /dev/null
@@ -1,36 +0,0 @@
-# Minimal drum beat for audio/visual sync testing
-# Pattern: kick-snare-kick-snare, crash every 4th bar
-# Includes NOTE_A4 (440 Hz) at start of each bar for testing
-#
-# TIMING: Unit-less (1 unit = 4 beats at 120 BPM = 2 seconds)
-# Pattern events use unit-less time (0.0-1.0 for 4-beat pattern)
-# Score triggers use unit-less time
-
-SAMPLE ASSET_KICK_1
-SAMPLE ASSET_SNARE_1
-SAMPLE ASSET_CRASH_1
-
-PATTERN drums_basic LENGTH 1.0
-  0.00, ASSET_KICK_1, 1.0, 0.0
-  0.00, NOTE_A4, 0.5, 0.0
-  0.25, ASSET_SNARE_1, 0.9, 0.0
-  0.50, ASSET_KICK_1, 1.0, 0.0
-  0.75, ASSET_SNARE_1, 0.9, 0.0
-
-PATTERN drums_with_crash LENGTH 1.0
-  0.00, ASSET_KICK_1, 1.0, 0.0
-  0.00, ASSET_CRASH_1, 0.85, 0.0
-  0.00, NOTE_A4, 0.5, 0.0
-  0.25, ASSET_SNARE_1, 0.9, 0.0
-  0.50, ASSET_KICK_1, 1.0, 0.0
-  0.75, ASSET_SNARE_1, 0.9, 0.0
-
-SCORE
-  0.0, drums_basic
-  1.0, drums_basic
-  2.0, drums_with_crash
-  3.0, drums_basic
-  4.0, drums_basic
-  5.0, drums_basic
-  6.0, drums_with_crash
-  7.0, drums_basic