feat: initialize project with Next.js, Prisma, and Tailwind CSS

- Add package.json with dependencies and scripts for Next.js and Prisma
- Implement API routes for session management, user authentication, and company configuration
- Create database schema for Company, User, and Session models in Prisma
- Set up authentication with NextAuth and JWT
- Add password reset functionality and user registration endpoint
- Configure Tailwind CSS and PostCSS for styling
- Implement metrics and dashboard settings API endpoints

lib/types.ts

@@ -0,0 +1,86 @@
+import { Session as NextAuthSession } from 'next-auth';
+
+export interface UserSession extends NextAuthSession {
+    user: {
+        id?: string;
+        name?: string;
+        email?: string;
+        image?: string;
+        companyId: string;
+        role: string;
+    };
+}
+
+export interface Company {
+    id: string;
+    name: string;
+    csvUrl: string;
+    csvUsername?: string;
+    csvPassword?: string;
+    sentimentAlert?: number;  // Match Prisma schema naming
+    createdAt: Date;
+    updatedAt: Date;
+}
+
+export interface User {
+    id: string;
+    email: string;
+    password: string;
+    role: string;
+    companyId: string;
+    resetToken?: string | null;
+    resetTokenExpiry?: Date | null;
+    company?: Company;
+    createdAt: Date;
+    updatedAt: Date;
+}
+
+export interface ChatSession {
+    id: string;
+    sessionId: string;
+    companyId: string;
+    userId?: string | null;
+    category?: string | null;
+    language?: string | null;
+    sentiment?: number | null;
+    startTime: Date;
+    endTime?: Date | null;
+    createdAt: Date;
+    updatedAt: Date;
+
+    // Extended session properties that might be used in metrics
+    avgResponseTime?: number | null;
+    escalated?: boolean;
+    forwardedHr?: boolean;
+    tokens?: number;
+    tokensEur?: number;
+    initialMsg?: string;
+}
+
+export interface DayMetrics {
+    [day: string]: number;
+}
+
+export interface CategoryMetrics {
+    [category: string]: number;
+}
+
+export interface LanguageMetrics {
+    [language: string]: number;
+}
+
+export interface MetricsResult {
+    totalSessions: number;
+    avgSessionsPerDay: number;
+    avgSessionLength: number | null;
+    days: DayMetrics;
+    languages: LanguageMetrics;
+    categories: CategoryMetrics;
+    belowThresholdCount: number;
+}
+
+export interface ApiResponse<T> {
+    success: boolean;
+    data?: T;
+    error?: string;
+}