FRE-4533: Merge apps/{api,web,mobile} and shared-db into ShieldAI repo

Merge FrenoCorp apps into ShieldAI packages/:
- packages/api: merged routes (notifications), middleware (auth, rate-limit, error, logging), config, services (darkwatch, spamshield, voiceprint), tests
- packages/web: new SolidJS web app stub
- packages/mobile: new SolidJS mobile app stub
- packages/shared-db: new Prisma DB package (separate from existing packages/db)
- pnpm-workspace.yaml: restored (apps/* removed, already covered by packages/*)

Next: reconcile packages/shared-db with packages/db, and fix server.ts correlationRoutes import

packages/web/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "web",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "lint": "eslint src/"
+  },
+  "dependencies": {
+    "solid-js": "^1.8.14",
+    "@shieldsai/shared-auth": "*",
+    "@shieldsai/shared-ui": "*",
+    "@shieldsai/shared-utils": "*"
+  },
+  "devDependencies": {
+    "typescript": "^5.3.3",
+    "vite": "^5.1.4",
+    "vite-plugin-solid": "^2.8.2",
+    "@types/node": "^25.6.0"
+  }
+}