Detector architecture v2: static engine, benchmarks, lab, and visual contrast (#156)

* Add detector benchmark lab and visual contrast fallback

* Expand visual contrast fixture coverage

* Add browser visual contrast fallback

* Show visual contrast overlays in detector lab

* Fix detector lab short viewport layout

* Fix detector lab visual overlays

* Add visual contrast to browser scan overlays

* Avoid browser scroll jumps during visual contrast scans

* Resolve visual contrast lazily on scroll

* Refresh detector lab visual counts lazily

* Update pnpm lockfile for static parser deps

* Address Bugbot detector API comments

* Report extension visual contrast errors

* Refactor detector into engine modules

* Address Bugbot detector comments

* Fix latest Bugbot detector notes

* Fix visual contrast fixture labels

* Refine detector lab fixtures

* Fix stale detector overlay references

* Fix detector lab fixture URLs

* Fix typography lab fixture highlights

* Fix typography lab page-level signal

* Fix visual overlay lifecycle cleanup

* Remove dead spotlight timer cleanup

* Make browser async APIs reject consistently

package.json

@@ -52,6 +52,8 @@
     "deploy": "bun run build && wrangler pages deploy build/",
     "test": "bun test tests/build.test.js tests/detect-antipatterns.test.js tests/windows-path-fix.test.js && node --test tests/detect-antipatterns-fixtures.test.mjs && node --test tests/detect-antipatterns-browser.test.mjs && node --test tests/cleanup-deprecated.test.mjs && node --test tests/impeccable-paths.test.mjs && node --test tests/live-wrap.test.mjs && node --test tests/live-reference.test.mjs && node --test tests/live-accept.test.mjs && node --test tests/live-inject.test.mjs && node --test tests/live-poll.test.mjs && node --test tests/live-server.test.mjs && node --test tests/live-browser-regression.test.mjs && node --test tests/live-session-store.test.mjs && node --test tests/live-browser-session.test.mjs && node --test tests/live-browser-source.test.mjs && node --test tests/live-completion.test.mjs && node --test tests/live-recovery-commands.test.mjs && node --test tests/framework-fixtures.test.mjs",
     "test:live-e2e": "node --test --test-timeout=600000 tests/live-e2e.test.mjs",
+    "bench:detector": "node scripts/benchmark-detector.mjs",
+    "bench:detector:browser": "node scripts/benchmark-detector.mjs --browser",
     "audit": "bun audit --audit-level=moderate",
     "prepack": "cp README.md README.repo.md && cp README.npm.md README.md",
     "postpack": "cp README.repo.md README.md && rm README.repo.md",
@@ -62,7 +64,10 @@
     "og-image": "bun run scripts/generate-og-image.js"
   },
   "dependencies": {
-    "jsdom": "29.1.1",
+    "css-select": "^5.2.2",
+    "css-tree": "^3.2.1",
+    "domutils": "^3.2.2",
+    "htmlparser2": "^10.0.0",
     "marked": "^16.4.2"
   },
   "optionalDependencies": {