fix(proxy): support PocketBase v0.23+ _superusers auth

UpSnap uses PocketBase which moved admins to _superusers collection
in v0.23+. Try _superusers first, fallback to users.

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

packages/proxy/src/services/upsnap.ts

@@ -4,25 +4,30 @@ import { config } from '../config.js';
 let token: string | null = null;
 
 async function authenticate(): Promise<string> {
-  const res = await fetch(
+  // PocketBase v0.23+ moved admins to _superusers collection
-    `${config.upsnap.url}/api/collections/users/auth-with-password`,
+  const collections = ['_superusers', 'users'];
-    {
-      method: 'POST',
-      headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({
-        identity: config.upsnap.username,
-        password: config.upsnap.password,
-      }),
-    }
-  );
 
-  if (!res.ok) {
+  for (const collection of collections) {
-    throw new Error(`UpSnap auth failed: ${res.status} ${await res.text()}`);
+    const res = await fetch(
+      `${config.upsnap.url}/api/collections/${collection}/auth-with-password`,
+      {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          identity: config.upsnap.username,
+          password: config.upsnap.password,
+        }),
+      }
+    );
+
+    if (res.ok) {
+      const data = (await res.json()) as UpSnapAuthResponse;
+      token = data.token;
+      return token;
+    }
   }
 
-  const data = (await res.json()) as UpSnapAuthResponse;
+  throw new Error('UpSnap auth failed: could not authenticate as superuser or user');
-  token = data.token;
-  return token;
 }
 
 async function getToken(): Promise<string> {