feat: Integrate tracker system and update project context documentation

- Implemented the basic tracker system with runtime support (tracker.h, tracker.cc).
- Added a sample music track file (assets/music.track).
- Created a tracker compiler tool (tools/tracker_compiler.cc) to generate music data.
- Updated CMakeLists.txt to build the tracker compiler and integrate generated data.
- Updated GEMINI.md to reflect new file locations and project context.

1 files changed, 35 insertions, 0 deletions

diff --git a/assets/music.track b/assets/music.track
new file mode 100644
index 0000000..f847fff
--- /dev/null
+++ b/assets/music.track
@@ -0,0 +1,35 @@
+# Music Score for 64k Demo
+
+BPM 120
+
+# Samples: name, freq, duration, amp, attack, harmonics, harmonic_decay
+SAMPLE kick, 50, 0.2, 1.0, 0.01, 1, 0.5
+SAMPLE snare, 200, 0.2, 0.8, 0.01, 5, 0.7
+SAMPLE hihat, 1000, 0.05, 0.3, 0.005, 10, 0.4
+
+# Patterns: beat, sample, volume, pan
+PATTERN drum_loop
+  0.0, kick, 1.0, 0.0
+  1.0, snare, 0.7, 0.0
+  2.0, kick, 1.0, 0.0
+  2.5, kick, 0.6, 0.2
+  3.0, snare, 0.7, 0.0
+
+PATTERN hihat_roll
+  0.0, hihat, 0.5, -0.5
+  0.5, hihat, 0.4, 0.5
+  1.0, hihat, 0.5, -0.5
+  1.5, hihat, 0.4, 0.5
+  2.0, hihat, 0.5, -0.5
+  2.5, hihat, 0.4, 0.5
+  3.0, hihat, 0.5, -0.5
+  3.5, hihat, 0.4, 0.5
+
+# Score: time_sec, pattern_name
+SCORE
+  0.0, drum_loop
+  0.0, hihat_roll
+  4.0, drum_loop
+  4.0, hihat_roll
+  8.0, drum_loop
+  12.0, drum_loop