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>

packages/shared-auth/src/models/auth.models.ts

@@ -0,0 +1,81 @@
+import { z } from 'zod';
+
+// User schema
+export const userSchema = z.object({
+  id: z.string().uuid(),
+  email: z.string().email(),
+  name: z.string().min(1),
+  image: z.string().url().optional(),
+  role: z.enum(['user', 'family_admin', 'family_member', 'support']),
+  emailVerified: z.date().optional(),
+  createdAt: z.date(),
+  updatedAt: z.date(),
+});
+
+export type User = z.infer<typeof userSchema>;
+
+// Family group schema
+export const familyGroupSchema = z.object({
+  id: z.string().uuid(),
+  name: z.string().min(1).max(100),
+  ownerId: z.string().uuid(),
+  createdAt: z.date(),
+  updatedAt: z.date(),
+});
+
+export type FamilyGroup = z.infer<typeof familyGroupSchema>;
+
+// Family member schema
+export const familyMemberSchema = z.object({
+  id: z.string().uuid(),
+  groupId: z.string().uuid(),
+  userId: z.string().uuid(),
+  role: z.enum(['owner', 'admin', 'member']),
+  joinedAt: z.date(),
+});
+
+export type FamilyMember = z.infer<typeof familyMemberSchema>;
+
+// Session schema
+export const sessionSchema = z.object({
+  id: z.string().uuid(),
+  userId: z.string().uuid(),
+  sessionToken: z.string(),
+  expires: z.date(),
+  createdAt: z.date(),
+});
+
+export type Session = z.infer<typeof sessionSchema>;
+
+// Account schema (for OAuth)
+export const accountSchema = z.object({
+  id: z.string().uuid(),
+  userId: z.string().uuid(),
+  provider: z.string(),
+  providerAccountId: z.string(),
+  access_token: z.string().optional(),
+  refresh_token: z.string().optional(),
+  expires_at: z.number().optional(),
+  token_type: z.string().optional(),
+  scope: z.string().optional(),
+});
+
+export type Account = z.infer<typeof accountSchema>;
+
+// Validation schemas for API
+export const createUserSchema = z.object({
+  email: z.string().email(),
+  password: z.string().min(8),
+  name: z.string().min(1),
+});
+
+export const createFamilyGroupSchema = z.object({
+  name: z.string().min(1).max(100),
+  ownerId: z.string().uuid(),
+});
+
+export const addFamilyMemberSchema = z.object({
+  groupId: z.string().uuid(),
+  userId: z.string().uuid(),
+  role: z.enum(['admin', 'member']).default('member'),
+});