feat: add screenshot-based visual validation to critique loop (#3660)

* feat(daemon): add visual validation atom

Generated-By: looper 0.9.3 (runner=worker, agent=codex)

* fix(daemon): fail closed in visual validation

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): narrow visual validation defaults

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): add visual validation to default critique stages

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): harden visual validation review fixes

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): fail closed in visual validation discovery

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* test(daemon): tighten visual validation discovery regression

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): match visual validation reference viewport

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): tighten visual validation capture flow

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): fail closed across visual validation refs

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): honor metadata entry file in visual validation

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): capture visual validation through preview route

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): fail closed without preview context

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): disable pre-start visual validation worker

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): narrow visual validation spec discovery

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): stop advertising visual validation as runnable

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): restore visual validation critique worker

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): delay visual validation until run success

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* test(daemon): cover post-run visual validation scheduling

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): gate post-run visual validation before finish

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* chore(nix): refresh pnpm deps hash

* fix(daemon): preserve deferred pipeline ordering

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(packaging): bundle Chromium for visual validation

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(scenarios): keep visual validation out of default critique loop

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(packaging): bundle Playwright headless shell

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(packaging): invalidate Playwright resource cache

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* fix(daemon): include visual-validation in bundled atom roster

Generated-By: looper 0.9.3 (runner=fixer, agent=codex)

* chore(nix): refresh pnpm deps hash

* fix: restore pre-run plugin surfaces and nix hashes

Generated-By: looper 0.9.5 (runner=fixer, agent=codex)

* fix: preserve pre-run surfaces and tolerate headed-only chromium bundles

Generated-By: looper 0.9.5 (runner=fixer, agent=codex)

* fix: launch visual validation with bundled chromium

Generated-By: looper 0.9.5 (runner=fixer, agent=codex)

* fix: avoid Playwright fixture teardown races

Generated-By: looper 0.9.5 (runner=fixer, agent=codex)

* fix: fail packaged visual validation on shell-only chromium

Generated-By: looper 0.9.5 (runner=fixer, agent=codex)

* fix: isolate synthetic Playwright test bundles

Generated-By: looper 0.9.5 (runner=fixer, agent=codex)

---------

Co-authored-by: open-design-bot[bot] <282769551+open-design-bot[bot]@users.noreply.github.com>

nix/pnpm-deps.nix

@@ -9,6 +9,6 @@
   # 1. Temporarily set the consuming `hash = lib.fakeHash;`
   # 2. Run the relevant nix build/flake check
   # 3. Copy the expected hash printed by Nix into the matching field below
-  daemonHash = "sha256-AEg1yKQK55U9P5EJPNqWNkF9teKAV0rwV84F8Im2Ir0=";
-  webHash = "sha256-/VNR08beUFynS6/uZHoA9AlZE8PPPicGAyJJ6Oy7trg=";
+  daemonHash = "sha256-w1y5qrGa/vZtg4LXQvyrUp4a4Rk9x6z7ve4Up65P6cA=";
+  webHash = "sha256-Uj9HlDpTtO8y/0ykTVkFtM0oukt1zSYsmIp7JZ9NJJc=";
 }