feat: add web app pages for org portal, thread viewer, and admin org management

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/app/api/auth/org/login/route.ts

@@ -0,0 +1,19 @@
+import { getApiBaseUrl, jsonResponse } from '../../../../_lib/api';
+
+export const dynamic = 'force-dynamic';
+
+export async function POST(req: Request): Promise<Response> {
+  const body = await req.json().catch(() => ({}));
+  const res = await fetch(`${getApiBaseUrl()}/auth/org/login`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json', Accept: 'application/json' },
+    body: JSON.stringify(body),
+    cache: 'no-store',
+  });
+  const payload = await res.json();
+  const headers: Record<string, string> = {};
+  if (res.ok && payload.token) {
+    headers['Set-Cookie'] = `tower_org_token=${payload.token}; Path=/; HttpOnly; SameSite=Lax; Max-Age=${7 * 24 * 60 * 60}`;
+  }
+  return jsonResponse(payload, res.status, headers);
+}