feat(FN-2873): align settings header refresh action

- Move the check-for-updates refresh button into the settings header actions group for consistent placement
- Keep update check behavior unchanged, including loading state, disabled state, and aria labeling
- Set the refresh icon size explicitly to match surrounding header controls
- Simplify mobile CSS by removing obsolete settings-update-check wrap overrides

packages/dashboard/app/components/SettingsModal.css

@@ -14,7 +14,8 @@
 /* Keep the GitHub Star and Help buttons at matching heights regardless of
    their differing icon sizes (provider icon 16px vs. HelpCircle 13px). */
 .settings-header-actions > .settings-github-star-btn,
-.settings-header-actions > .btn {
+.settings-header-actions > .btn,
+.settings-header-actions > .settings-update-btn {
   height: 26px;
   box-sizing: border-box;
 }
@@ -957,11 +958,6 @@
 
 
 @media (max-width: 768px) {
-  .settings-update-check {
-    flex-wrap: wrap;
-    row-gap: var(--space-xs);
-  }
-
   /* Settings modal: use the section picker as the only mobile navigation */
   .settings-layout {
     flex-direction: column;

packages/dashboard/app/components/SettingsModal.tsx

@@ -4465,18 +4465,6 @@ export function SettingsModal({
             <h3>Settings</h3>
             <div className="settings-update-check">
               {appVersion && <p className="settings-modal-version">Version {appVersion}</p>}
-              <button
-                type="button"
-                className="btn btn-icon btn-sm settings-update-btn"
-                onClick={() => {
-                  void handleCheckForUpdates();
-                }}
-                disabled={updateCheckLoading}
-                aria-label="Check for updates"
-                title="Check for updates"
-              >
-                <RefreshCw className={updateCheckLoading ? "spinning" : undefined} />
-              </button>
               {updateCheckResult && (
                 <span
                   aria-live="polite"
@@ -4494,6 +4482,18 @@ export function SettingsModal({
             </div>
           </div>
           <div className="settings-header-actions">
+            <button
+              type="button"
+              className="btn btn-icon btn-sm settings-update-btn"
+              onClick={() => {
+                void handleCheckForUpdates();
+              }}
+              disabled={updateCheckLoading}
+              aria-label="Check for updates"
+              title="Check for updates"
+            >
+              <RefreshCw size={14} className={updateCheckLoading ? "spinning" : undefined} />
+            </button>
             {form.showGitHubStarButton !== false && (
               <a
                 href="https://github.com/Runfusion/Fusion"