The text-rendering:geometricPrecision rule injected by the previous commit
shifts glyph advances by ~1% on chrome-headless-shell (was optimizeSpeed
under text-rendering:auto). Two fixtures with strict gates tripped:
- distributed/png-sequence: maxFrameFailures=0 byte-identity gate, all 60
frames now differ. The fixture's own meta.json already documents this
as the expected response to renderer-pixel changes.
- heygen-promo-preview-assets: minPsnr=30, maxFrameFailures=0; one frame
dropped to 27.67 dB after the layout shift.
Full local regression run (47 fixtures): 45 passed, only these 2 needed
regeneration — the text-rendering change passes through the rest without
PSNR impact.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
