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Week 1–2: Prototype native audio timing and simple beatmap player; basic tap input with calibration. Week 3–4: Implement rendering pipeline, simple shaders, and quality presets. Week 5–6: Level loader, UI, and basic gameplay loop; integrate calibration and hit judgment. Week 7–8: Optimize performance, add accessibility features, and prepare community beatmap import flow. Week 9–10: Content moderation policy, packaging, and publishing pipeline. Week 11–12: Beta testing, bug fixes, and launch. project arrhythmia android free