refactor: strengthen client boundaries and quality gates

package.json

@@ -2,6 +2,7 @@
   "name": "cmpp-platform-frontend",
   "version": "0.1.0",
   "private": true,
+  "packageManager": "npm@11.6.2",
   "type": "module",
   "scripts": {
     "dev": "npm run build && vite preview --host 0.0.0.0",
@@ -17,9 +18,11 @@
     "spike:gateway": "powershell -NoProfile -ExecutionPolicy Bypass -Command \"$env:Path='C:\\Program Files\\Go\\bin;'+$env:Path; Push-Location gateway; go test ./...; Pop-Location\"",
     "spike:bullmq": "node api/src/spike/bullmq-link-spike.mjs",
     "test:api": "npm --prefix api test",
+    "test:frontend": "vitest run",
+    "test:frontend:coverage": "vitest run --coverage",
     "test:gateway": "npm run spike:gateway",
-    "lint": "npm run quality:verify && tsc --noEmit",
-    "format:check": "git diff --check",
+    "lint": "npm run quality:verify && node tools/quality/run-changed-code-quality.mjs lint && tsc --noEmit",
+    "format:check": "git diff --check && node tools/quality/run-changed-code-quality.mjs format",
     "quality:verify": "node tools/quality/verify-code-quality.mjs",
     "bundle:verify": "node tools/quality/verify-bundle-budget.mjs",
     "verify:phase1": "npm run spike:contracts && npm run spike:gateway && npm run spike:bullmq && npm run prisma:generate && npm run build:api && npm run build",
@@ -30,7 +33,7 @@
     "verify:phase6": "npm run verify:phase5",
     "verify:phase7": "npm run verify:phase6",
     "verify:phase8": "npm run verify:phase7",
-    "verify:quality": "npm run lint && npm run format:check && npm run build && npm run bundle:verify && npm --prefix api run test:coverage"
+    "verify:quality": "npm run lint && npm run format:check && npm run test:frontend:coverage && npm run build && npm run bundle:verify && npm --prefix api run test:incremental-coverage && npm --prefix api run test:coverage"
   },
   "dependencies": {
     "@vitejs/plugin-react": "^6.0.2",
@@ -46,10 +49,23 @@
     "zustand": "^5.0.14"
   },
   "devDependencies": {
+    "@testing-library/jest-dom": "^7.0.1",
+    "@testing-library/react": "^16.3.3",
+    "@testing-library/user-event": "^14.6.6",
     "@types/node": "^25.9.3",
     "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
-    "typescript": "^6.0.3"
+    "@vitest/coverage-v8": "^4.1.11",
+    "eslint": "^9.39.4",
+    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-refresh": "^0.5.2",
+    "globals": "^17.4.0",
+    "jsdom": "^30.0.1",
+    "msw": "^2.15.0",
+    "prettier": "^3.9.6",
+    "typescript": "^6.0.3",
+    "typescript-eslint": "^8.68.0",
+    "vitest": "^4.1.11"
   },
   "overrides": {
     "nanoid": "3.3.18",