feat: complete platform management features and enhance SEO

- Add comprehensive company management interface with editing, suspension
- Implement user invitation system within companies
- Add Add Company modal with form validation
- Create platform auth configuration in separate lib file
- Add comprehensive SEO metadata with OpenGraph and structured data
- Fix auth imports and route exports for Next.js 15 compatibility
- Add toast notifications with RadixUI components
- Update TODO status to reflect 100% completion of platform features

app/api/dashboard/sessions/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from "next/server";
 import { getServerSession } from "next-auth/next";
-import { authOptions } from "../../auth/[...nextauth]/route";
+import { authOptions } from "../../../../lib/auth";
 import { prisma } from "../../../../lib/prisma";
 import {
   ChatSession,