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/platform/auth/[...nextauth]/route.ts

@@ -1,107 +1,5 @@
-import NextAuth, { NextAuthOptions } from "next-auth";
-import CredentialsProvider from "next-auth/providers/credentials";
-import { prisma } from "../../../../../lib/prisma";
-import bcrypt from "bcryptjs";
-
-// Define the shape of the JWT token for platform users
-declare module "next-auth/jwt" {
-  interface JWT {
-    isPlatformUser: boolean;
-    platformRole: string;
-  }
-}
-
-// Define the shape of the session object for platform users
-declare module "next-auth" {
-  interface Session {
-    user: {
-      id?: string;
-      name?: string;
-      email?: string;
-      image?: string;
-      isPlatformUser: boolean;
-      platformRole: string;
-    };
-  }
-
-  interface User {
-    id: string;
-    email: string;
-    name: string;
-    isPlatformUser: boolean;
-    platformRole: string;
-  }
-}
-
-export const platformAuthOptions: NextAuthOptions = {
-  providers: [
-    CredentialsProvider({
-      name: "Platform Credentials",
-      credentials: {
-        email: { label: "Email", type: "text" },
-        password: { label: "Password", type: "password" },
-      },
-      async authorize(credentials) {
-        if (!credentials?.email || !credentials?.password) {
-          return null;
-        }
-
-        const platformUser = await prisma.platformUser.findUnique({
-          where: { email: credentials.email },
-        });
-
-        if (!platformUser) return null;
-
-        const valid = await bcrypt.compare(credentials.password, platformUser.password);
-        if (!valid) return null;
-
-        return {
-          id: platformUser.id,
-          email: platformUser.email,
-          name: platformUser.name,
-          isPlatformUser: true,
-          platformRole: platformUser.role,
-        };
-      },
-    }),
-  ],
-  session: {
-    strategy: "jwt",
-    maxAge: 8 * 60 * 60, // 8 hours for platform users (more secure)
-  },
-  cookies: {
-    sessionToken: {
-      name: `platform-auth.session-token`,
-      options: {
-        httpOnly: true,
-        sameSite: "lax",
-        path: "/platform",
-        secure: process.env.NODE_ENV === "production",
-      },
-    },
-  },
-  callbacks: {
-    async jwt({ token, user }) {
-      if (user) {
-        token.isPlatformUser = user.isPlatformUser;
-        token.platformRole = user.platformRole;
-      }
-      return token;
-    },
-    async session({ session, token }) {
-      if (token && session.user) {
-        session.user.isPlatformUser = token.isPlatformUser;
-        session.user.platformRole = token.platformRole;
-      }
-      return session;
-    },
-  },
-  pages: {
-    signIn: "/platform/login",
-  },
-  secret: process.env.NEXTAUTH_SECRET,
-  debug: process.env.NODE_ENV === "development",
-};
+import NextAuth from "next-auth";
+import { platformAuthOptions } from "../../../../../lib/platform-auth";
 
 const handler = NextAuth(platformAuthOptions);