Forst Task 4 private front-end mirror implemented in isolated handoff worktree; source parity, provenance, and accessible gallery behavior are now reviewable without deployment.

Scope

• Host: rdmsm4x
• Project worktree: /Users/richh/dev/_handoff/codex-out/amagansett-white-preview-fidelity-20260825
• Branch/commit: codex/amagansett-white-preview-fidelity-20260825 / 7582d3b0dd54ecbb440458bf2c69f671be448ef4
• Canonical checkout /Users/richh/dev/sites/amagansett-app: not modified

Files and assets

• Added ingestion script, typed Forst content, source manifest, parity report, evidence report, focused unit/E2E tests, and semantic gallery UI/CSS.
• Cached 1,787 first-party assets under sites/forst/public/images/forst and sites/forst/public/downloads (1,766 images, 21 PDFs, 717,062,963 bytes, 0 omissions).
• No secrets, credentials, deployments, backend submissions, analytics, trackers, source JavaScript, CAPTCHA, map iframe, or third-party runtime content used.

Commands and evidence

• zsh -n scripts/ingest_forst_frontend_v1.0.zsh passed.
• Ingestion ran twice with robots/content-signal checks, seven-page allowlist, ten-second document delay, same-origin MIME/signature checks, and deterministic manifest SHA 4ee580006f42226dde55717aad426f713f697c6b98451d627d96450ea1cf400e on both runs.
• npm test passed: 11 files, 68 tests.
• npm run typecheck passed.
• npm run build:forst passed.
• npx playwright test tests/e2e/forst.spec.ts passed: 3 tests including gallery keyboard/focus, mobile overflow, and serious/critical Axe.
• npx wrangler deploy --dry-run --config deploy/forst.wrangler.jsonc passed; no deploy.
• git diff --check passed; worktree clean after commit.

Undo / owner actions

• Revert commit 7582d3b0dd54ecbb440458bf2c69f671be448ef4 in the isolated branch only; do not overwrite another checkout.
• Parent/lead must independently review and integrate/cherry-pick the commit, run cross-site gates, and decide whether to expand the ten representative UI thumbnails to a manifest-driven full gallery before any private deployment.