FRE-4529: Transfer ShieldAI code from FrenoCorp repo

Transferred ShieldAI-related files mistakenly placed in ~/code/FrenoCorp:
- Services: spamshield (feature-flags, audit-logger, error-handler), voiceprint (config, service, feature-flags), darkwatch (pipeline, scan, scheduler, watchlist, webhook)
- Packages: shared-analytics, shared-auth, shared-ui, shared-utils (new); shared-billing, jobs supplemented with unique FC files
- Server: alerts (FC version newer), routes (spamshield, darkwatch, voiceprint)
- Config: turbo.json, tsconfig.base.json, vite/vitest configs, drizzle, Dockerfile
- VoicePrint ML service
- Examples

Pending: apps/{api,web,mobile}/ structured merge, shared-db/db mapping

Co-Authored-By: Paperclip <noreply@paperclip.ing>

vite.config.ts

@@ -0,0 +1,33 @@
+import { defineConfig } from 'vite';
+import solid from 'vite-plugin-solid';
+import { resolve } from 'path';
+
+export default defineConfig({
+  plugins: [solid()],
+  resolve: {
+    alias: {
+      '@lib': resolve(__dirname, './src/lib'),
+      '@components': resolve(__dirname, './src/components'),
+      '@types': resolve(__dirname, './src/types'),
+    },
+  },
+  build: {
+    target: 'esnext',
+    outDir: 'dist',
+    sourcemap: true,
+    rollupOptions: {
+      input: {
+        main: resolve(__dirname, 'index.html'),
+      },
+    },
+  },
+  server: {
+    port: 3000,
+    proxy: {
+      '/sync': {
+        target: 'ws://localhost:8080',
+        ws: true,
+      },
+    },
+  },
+});