feat: complete TASK-WP0-01 toolchain skeleton

package.json

@@ -0,0 +1,37 @@
+{
+  "name": "dada-p0a",
+  "version": "0.0.0",
+  "private": true,
+  "packageManager": "pnpm@10.28.2",
+  "engines": {
+    "node": "24.13.0"
+  },
+  "scripts": {
+    "build": "pnpm -r --if-present build && dotnet build supervisor/Dada.Supervisor/Dada.Supervisor.csproj --configuration Release",
+    "typecheck": "pnpm -r --if-present typecheck",
+    "test:unit:contract": "node --test tests/toolchain/frozen-toolchain.test.mjs",
+    "test:unit": "pnpm run test:unit:contract && vitest run tests/unit",
+    "test:integration": "vitest run tests/integration",
+    "test:api": "vitest run tests/api",
+    "test:worker": "pnpm --filter @dada/worker build && node scripts/worker-smoke.mjs",
+    "test:e2e": "node scripts/validate-layer-scope.mjs E2E",
+    "test:visual": "node scripts/validate-layer-scope.mjs VISUAL",
+    "test:performance": "node scripts/validate-layer-scope.mjs PERFORMANCE",
+    "test:security": "node scripts/verify-frozen-dependencies.mjs && node scripts/redaction-scan.mjs",
+    "test:package": "pnpm run typecheck && pnpm --filter @dada/web build && pnpm --filter @dada/api build && pnpm --filter @dada/worker build && node scripts/package-smoke.mjs",
+    "validate:tdd-trace": "node scripts/validate-tdd-trace.mjs",
+    "validate:external": "node scripts/validate-external.mjs",
+    "test:all": "pnpm test:unit && pnpm test:integration && pnpm test:api && pnpm test:worker && pnpm test:e2e && pnpm test:visual && pnpm test:performance && pnpm test:security && pnpm test:package && pnpm validate:tdd-trace",
+    "test:wp0-01": "node scripts/run-wp0-01-validation.mjs"
+  },
+  "devDependencies": {
+    "@playwright/test": "1.62.0",
+    "@types/better-sqlite3": "7.6.13",
+    "@types/node": "24.13.3",
+    "@types/react": "19.2.17",
+    "@types/react-dom": "19.2.3",
+    "typescript": "7.0.2",
+    "vite": "8.1.5",
+    "vitest": "4.1.10"
+  }
+}