replay.* mutates and reads replay/RTC state that the CPU thread consumes as it
runs, and gpu.displaylist.disasm reads through the gpu pointer and emulated
memory. Both did it straight from the WebSocket thread. Route through
Core_RunOnCPUThread(), and fold the "is a game running" checks into the same
trip rather than testing before it, where the answer could already be stale.
Part of removing the WebSocket debugger's lifecycleLock.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GZq8ZtJmFY7bkX5FVkr3P9