An inspector review of the day's GPU-path work (context/impl/impl-review-findings-gpu.md), every
finding fixed:
- the express lane builds on its slot's own frame only with no main-lane job in flight (a composed,
unpolled job's change was in no slot's record), never takes a slot a main-lane job holds, and a slot
is invalid from a job's post (either lane) to its publish;
- an own-slot base after a scroll only when neither the latest composite nor the slot's frame had
fixed or stuck layers (the engine judges those against the previous composite);
- a failed main-lane job drops every slot's record; a recentring move invalidates the slot first;
- engine 0054: a window-moved shift saves every kept rect before writing any, and WebGL makes no EGL
contexts once the daemon has given the GPU path up (jihad_offscreen_gpu_given_up);
- the adapter reads the window trailer once.
T-504: a zoom's express frame gives up main-lane frames at the old zoom that were not composed yet.
The day's failed approaches are in context/impl/dead-ends.md. Rounds 339-340: the default checks of
all three interfaces pass; verify mode on a main-lane Wikipedia pan, 0 structurally wrong frames.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J67ZH8aYy8uzhgZDZ6Nvx9
NotAlexNoyleandClaude Opus 5.5
902187aebe