Implement authentication, waitlist, and logging upgrades

server/models/User.ts

@@ -0,0 +1,32 @@
+import mongoose from 'mongoose'
+
+export interface UserDocument extends mongoose.Document {
+  email: string
+  passwordHash: string
+  name?: string
+  role: 'user' | 'admin'
+  createdAt: Date
+  lastLoginAt?: Date
+  tokenVersion: number
+  invitationCodesIssued: number
+  acceptedTermsAt: Date
+  acceptedPrivacyAt: Date
+}
+
+const userSchema = new mongoose.Schema<UserDocument>({
+  email: { type: String, required: true, unique: true, lowercase: true, trim: true },
+  passwordHash: { type: String, required: true },
+  name: { type: String, trim: true },
+  role: { type: String, enum: ['user', 'admin'], default: 'user' },
+  createdAt: { type: Date, default: () => new Date() },
+  lastLoginAt: { type: Date },
+  tokenVersion: { type: Number, default: 0 },
+  invitationCodesIssued: { type: Number, default: 0 },
+  acceptedTermsAt: { type: Date, required: true },
+  acceptedPrivacyAt: { type: Date, required: true },
+})
+
+export const User =
+  (mongoose.models.User as mongoose.Model<UserDocument> | undefined) ||
+  mongoose.model<UserDocument>('User', userSchema)
+