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@@ -3,6 +3,15 @@ This file tracks prioritized tasks with detailed attack plans. ## Recently Completed (February 4, 2026) +- [x] **Variable Tempo System**: + - [x] **Music Time Abstraction**: Implemented unified music time in `main.cc` that advances at `tempo_scale` rate, decoupling from physical time. + - [x] **Tempo Control**: Added `g_tempo_scale` (default 1.0) allowing future dynamic tempo changes without pitch shifting. + - [x] **Reset Tricks**: Comprehensive tests verify 2x speed-up and 2x slow-down reset techniques work correctly. + - [x] **Test Suite**: Created `test_variable_tempo.cc` with 6 test scenarios: basic scaling, speed-up/slow-down resets, pattern density swap, continuous acceleration, oscillating tempo. + - [x] **Perfect Verification**: All tests pass, confirming music_time advances correctly at variable rates (e.g., 2.0x tempo → 2x faster triggering). + - [x] **Zero Pitch Shift**: Spectrograms unchanged, only trigger timing affected (as designed). + - [x] **Documentation**: Created `ANALYSIS_VARIABLE_TEMPO_V2.md` explaining simplified trigger-timing approach. + - [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). |