Three.js Debug Profiler

Purpose

Find root causes and optimize measured bottlenecks without breaking playability.

Debug Workflow

Load references/debug-profile-checklists.md as the first action when debugging render/runtime/mobile issues, asset loading, audio loading/playback, animation, resize, input, blank canvas, physics/collision bugs, or profiling performance. Track it in a reference ledger with yes/no, path, and failure reason. Do not mark the debug/profile phase complete while this reference is skipped for debug or profiling work.

Load references/checklists/scene-debugging.md for render/runtime bug diagnosis, references/checklists/performance-profile.md for profiling work, and references/checklists/mobile-input.md for mobile render/input issues. Load references/prompt-templates.md only when the user asks for reusable debug/profile prompts or a task template.