Refactor CLI authentication module location (#660)

* refactor: move cli-auth.js to the providers folder

* fix: expired oauth token returns no error message

server/providers/cursor/status.js

@@ -0,0 +1,128 @@
+/**
+ * Cursor Provider Status
+ *
+ * Checks whether cursor-agent CLI is installed and whether the user
+ * is logged in.
+ *
+ * @module providers/cursor/status
+ */
+
+import { execFileSync, spawn } from 'child_process';
+
+/**
+ * Check if cursor-agent CLI is installed.
+ * @returns {boolean}
+ */
+export function checkInstalled() {
+  try {
+    execFileSync('cursor-agent', ['--version'], { stdio: 'ignore', timeout: 5000 });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Full status check: installation + authentication.
+ * @returns {Promise<import('../types.js').ProviderStatus>}
+ */
+export async function checkStatus() {
+  const installed = checkInstalled();
+
+  if (!installed) {
+    return {
+      installed,
+      authenticated: false,
+      email: null,
+      error: 'Cursor CLI is not installed'
+    };
+  }
+
+  const result = await checkCursorLogin();
+
+  return {
+    installed,
+    authenticated: result.authenticated,
+    email: result.email || null,
+    error: result.error || null
+  };
+}
+
+// ─── Internal helpers ───────────────────────────────────────────────────────
+
+function checkCursorLogin() {
+  return new Promise((resolve) => {
+    let processCompleted = false;
+
+    const timeout = setTimeout(() => {
+      if (!processCompleted) {
+        processCompleted = true;
+        if (childProcess) {
+          childProcess.kill();
+        }
+        resolve({
+          authenticated: false,
+          email: null,
+          error: 'Command timeout'
+        });
+      }
+    }, 5000);
+
+    let childProcess;
+    try {
+      childProcess = spawn('cursor-agent', ['status']);
+    } catch {
+      clearTimeout(timeout);
+      processCompleted = true;
+      resolve({
+        authenticated: false,
+        email: null,
+        error: 'Cursor CLI not found or not installed'
+      });
+      return;
+    }
+
+    let stdout = '';
+    let stderr = '';
+
+    childProcess.stdout.on('data', (data) => {
+      stdout += data.toString();
+    });
+
+    childProcess.stderr.on('data', (data) => {
+      stderr += data.toString();
+    });
+
+    childProcess.on('close', (code) => {
+      if (processCompleted) return;
+      processCompleted = true;
+      clearTimeout(timeout);
+
+      if (code === 0) {
+        const emailMatch = stdout.match(/Logged in as ([a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,})/i);
+
+        if (emailMatch) {
+          resolve({ authenticated: true, email: emailMatch[1] });
+        } else if (stdout.includes('Logged in')) {
+          resolve({ authenticated: true, email: 'Logged in' });
+        } else {
+          resolve({ authenticated: false, email: null, error: 'Not logged in' });
+        }
+      } else {
+        resolve({ authenticated: false, email: null, error: stderr || 'Not logged in' });
+      }
+    });
+
+    childProcess.on('error', () => {
+      if (processCompleted) return;
+      processCompleted = true;
+      clearTimeout(timeout);
+
+      resolve({
+        authenticated: false,
+        email: null,
+        error: 'Cursor CLI not found or not installed'
+      });
+    });
+  });
+}