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This file tracks prioritized tasks with detailed attack plans.
## Recently Completed (February 4, 2026)
+- [x] **Task #51.3 & #51.4: Tracker Test Suite & Build Integration**:
+ - [x] **Comprehensive Test Suite**: Created `test_tracker_timing.cc` with 7 test scenarios using MockAudioBackend.
+ - [x] **Simultaneous Trigger Verification**: Confirmed multiple patterns at same time trigger with **0.000ms delta** (perfect sync).
+ - [x] **Test Coverage**: Basic recording, progressive triggering, simultaneous triggers, monotonicity, seek/fast-forward, timestamp clustering, render integration.
+ - [x] **Real Music Data**: Tests use generated tracker music data for realistic validation.
+ - [x] **Build Integration**: Added to CMake with proper dependencies on generated music data.
+ - [x] **All Tests Pass**: 15/15 tests passing (100% success rate).
+
- [x] **Task #51.2: Mock Audio Backend**:
- [x] **Event Recording**: Created `VoiceTriggerEvent` structure to capture timestamp, spectrogram_id, volume, and pan.
- [x] **MockAudioBackend Class**: Implemented test-only backend with event recording and time tracking capabilities.
@@ -83,8 +91,8 @@ This file tracks prioritized tasks with detailed attack plans.
- [ ] **Task #51: Tracker Timing Verification**
- [x] **Task #51.1: Audio Backend Abstraction**: Create an interface to separate audio output from synth logic, enabling testable backends.
- [x] **Task #51.2: Mock Audio Backend**: Implement a test backend that records voice trigger events with precise timestamps.
- - [ ] **Task #51.3: Tracker Test Suite**: Create `test_tracker.cc` to verify pattern triggering, timing accuracy, and synchronization.
- - [ ] **Task #51.4: Integration with Build**: Wire up tests to CMake and ensure they run in CI.
+ - [x] **Task #51.3: Tracker Test Suite**: Create `test_tracker.cc` to verify pattern triggering, timing accuracy, and synchronization.
+ - [x] **Task #51.4: Integration with Build**: Wire up tests to CMake and ensure they run in CI.
## Phase 2: Size Optimization (Final Goal)