Finalize the screenshot review system after the first Linux re-baseline
(that run showed 355/356 stable — the placeholder floor is fine as-is):
- ENFORCE the gate: `screenshots:check --fail-on-change` now fails the build on any
changed/added/removed vs baselines (it still posts the drift report first, so the
failure is actionable; a real render change → re-promote). The generic "CI failed"
notice is suppressed for gate failures so we don't double-post on drift.
- Exclude retinascale-01-loaded: a fullPage HiDPI test whose captured height + DPR
scaling vary run-to-run (~60% inter-run diff) — a flaky test, not render noise.
IGNORE_SCREENSHOTS in config.ts; compare/promote/gen-manifest skip it; baseline removed.
- Kill the baseline-dir shadowing: drop e2e/baseline-screenshots/ from BASELINE_DIRS +
delete its 3 files (grid-tab-final, wxgrid-controls, wxgrid-dedicated-page) that
duplicated names in baseline-screenshots/ with different bytes.
- Prune 12 stale baselines (renamed/removed specs: wizard-01..04, gerbview-wizard-01..04,
zoom-pl_editor-*, popup-03-palette).
- Delete the dead compare-screenshots.sh / update-baseline-screenshots.sh.
- Regenerate screenshot-manifest.json (355 entries).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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