Add Freeze Log debug toggle - #667
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When the game stops presenting for 5 s, record what every guest thread is doing so a freeze can be diagnosed after the fact. Each dump captures per-thread state from /proc (name, run state, wchan, current syscall), every executable mapping including anonymous JIT regions, and the kgsl GPU counters. Dumps repeat every 15 s while stalled, capped at six, and are written to logs/freeze_<timestamp>.log so the existing log export picks them up. Writing to a file rather than logcat is deliberate: a guest process has several hundred mappings and logcat rate-limits and silently drops them. Off by default; toggle lives in Settings > Debug.
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When the game stops presenting for 5 s, record what every guest thread is doing so a freeze can be diagnosed after the fact.
Each dump captures per-thread state from /proc (name, run state, wchan, current syscall), every executable mapping including anonymous JIT regions, and the kgsl GPU counters. Dumps repeat every 15 s while stalled, capped at six, and are written to logs/freeze_.log so the existing log export picks them up.
Writing to a file rather than logcat is deliberate: a guest process has several hundred mappings and logcat rate-limits and silently drops them.
Off by default; toggle lives in Settings > Debug.