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

- Copy apps/api (Fastify server with spamshield/voiceprint/darkwatch services)
- Copy apps/web (SolidJS web app)
- Copy apps/mobile (SolidJS mobile app)
- Copy packages/shared-db (Prisma schema/models)
- Add apps/* to pnpm-workspace.yaml

apps/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"
+  }
+}