style: apply linter suggestions

static/js/views/nextcloud/error.js

@@ -11,7 +11,7 @@ switch (errorType) {
         errorTitle.textContent = 'Login Failed';
         errorMessage.textContent = 'Invalid username or password. Please check your credentials and try again.';
         errorAction.textContent = 'Try Again';
-        errorAction.addEventListener('click', function () {
+        errorAction.addEventListener('click', () => {
             history.back();
         });
         break;
@@ -19,7 +19,7 @@ switch (errorType) {
         errorTitle.textContent = 'Session Expired';
         errorMessage.textContent = 'Your session has expired. Please try again.';
         errorAction.textContent = 'Close Window';
-        errorAction.addEventListener('click', function () {
+        errorAction.addEventListener('click', () => {
             window.close();
         });
         break;
@@ -27,7 +27,7 @@ switch (errorType) {
         errorTitle.textContent = 'Not Found';
         errorMessage.textContent = 'The requested page was not found.';
         errorAction.textContent = 'Close Window';
-        errorAction.addEventListener('click', function () {
+        errorAction.addEventListener('click', () => {
             window.close();
         });
         break;
@@ -35,7 +35,7 @@ switch (errorType) {
         errorTitle.textContent = 'Error';
         errorMessage.textContent = 'An unexpected error occurred. Please try again.';
         errorAction.textContent = 'Close Window';
-        errorAction.addEventListener('click', function () {
+        errorAction.addEventListener('click', () => {
             window.close();
         });
 }

static/js/views/nextcloud/login.js

@@ -6,22 +6,22 @@ if (!/^[0-9a-fA-F]+$/.test(token)) {
     document.body.innerHTML = '<p>Invalid session token.</p>';
     throw new Error('Invalid token format');
 }
-document.getElementById('login-flow-form').action = '/login/v2/flow/' + token;
+document.getElementById('login-flow-form').action = `/login/v2/flow/${token}`;
 
 // Check if OIDC is available and configure SSO button
-(async function () {
+(async () => {
     try {
-        var resp = await fetch('/api/auth/oidc/providers');
+        const resp = await fetch('/api/auth/oidc/providers');
         if (!resp.ok) return;
-        var info = await resp.json();
+        const info = await resp.json();
         if (!info.enabled) return;
 
         // Show OIDC section
         document.getElementById('oidc-section').classList.remove('hidden');
 
         // Update button text with provider name
-        var btn = document.getElementById('oidc-button');
-        btn.textContent = 'Sign in with ' + (info.provider_name || 'SSO');
+        const btn = document.getElementById('oidc-button');
+        btn.textContent = `Sign in with ${info.provider_name || 'SSO'}`;
 
         // If password login is disabled, hide the password form
         if (!info.password_login_enabled) {
@@ -29,10 +29,10 @@ document.getElementById('login-flow-form').action = '/login/v2/flow/' + token;
         }
 
         // SSO button redirects to the OIDC flow for this NC token
-        btn.addEventListener('click', function () {
-            window.location.href = '/login/v2/flow/' + token + '/oidc';
+        btn.addEventListener('click', () => {
+            window.location.href = `/login/v2/flow/${token}/oidc`;
         });
-    } catch (e) {
+    } catch (_e) {
         // OIDC not available — silently keep password-only mode
     }
 })();

static/js/views/nextcloud/success.js

@@ -1,7 +1,7 @@
-document.getElementById('close-window-btn').addEventListener('click', function () {
+document.getElementById('close-window-btn').addEventListener('click', () => {
     window.close();
 });
 // Auto-close after 3 seconds
-setTimeout(function () {
+setTimeout(() => {
     window.close();
 }, 3000);