test(hooks): finalize mutation test improvements and release acceptance

- Raise use-swipe-gesture mutation score to 66.13% (target 65%+)
- Maintain use-reduced-motion mutation score at 76.32% (target 50%+)
- Fix use-reduced-motion.ts ESLint set-state-in-effect warning
- Add UJ-10 deep searcher journey (category browse → article read → content discovery)
- Add 40 new test files (analytics, detail, sections, ui, lib components)
- Update test-strategy-plan.md to v2.0 (sync test count to 1591)
- Sync README.md with final release metrics

Quality gates: TS 0 errors, ESLint 0 errors, 121 suites / 1591 tests passed

stryker.config.json

@@ -9,6 +9,11 @@
     "src/hooks/**/*.{ts,tsx}",
     "src/components/ui/**/*.{ts,tsx}",
     "src/components/layout/**/*.{ts,tsx}",
+    "src/components/analytics/**/*.{ts,tsx}",
+    "src/components/seo/**/*.{ts,tsx}",
+    "src/components/detail/**/*.{ts,tsx}",
+    "src/components/sections/**/*.{ts,tsx}",
+    "src/components/content/**/*.{ts,tsx}",
     "src/lib/cms/**/*.ts",
     "!src/**/*.test.{ts,tsx}",
     "!src/**/__tests__/**",
@@ -17,9 +22,9 @@
   "thresholds": {
     "high": 80,
     "low": 60,
-    "break": 30
+    "break": 50
   },
-  "timeoutMS": 60000,
+  "timeoutMS": 120000,
   "cleanTempDir": true,
   "symlinkNodeModules": true,
   "ignorePatterns": [
@@ -35,15 +40,14 @@
     "public/",
     "dist/",
     ".next/",
-    "prisma/",
     "scripts/",
     "e2e/",
     ".claude/",
     ".trae/",
     ".git/",
     ".husky/",
-    "node_modules/",
-    "coverage/"
+    "coverage/",
+    ".superpowers/"
   ],
   "jest": {
     "configFile": "config/test/jest.config.js"