gh v2.99 gained a native --attach flag for issues, PRs and comments, so
the custom trusted-publisher chain (gh-image extension + GH_IMAGE_SESSION_TOKEN
workflow_run job + attachment-upload script) is superseded.
Remove:
- .github/workflows/publish-e2e-evidence.yml (workflow_run publisher)
- scripts/ci/publish_e2e_evidence.py + its tests
- e2e-evidence-* artifact upload + evidence staging in e2e-desktop.yml /
e2e_screenshot_status.py, incl. the 'inline evidence is publishing...'
marker placeholder in the CI review comment status
Keep: the review-comment screenshot/diff counts and artifact links produced
by e2e_screenshot_status.py.