Fix submenu: restore Overview page, fix collapse nesting, hide rail

- Keep top-level submenu as "Overview" instead of removing it
- Fix broken HTML nesting where overview panel div crossed into
  aeo-audit-content boundary, hiding all stage content
- Hide workflow rail on direct-tab pages via CSS
- Remove duplicate Settings submenu entry

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: shortov

admin/css/admin.css

@@ -77,6 +77,10 @@
     display: none;
 }
 
+.aeo-direct-tab .aeo-workflow-rail {
+    display: none;
+}
+
 .aeo-settings h1 {
     margin: 0;
     font-size: 32px;

admin/views/audit-page.php

@@ -351,6 +351,7 @@
 			</div>
 		</div>
 		<?php endif; ?>
+		</div><!-- /.aeo-overview-panel -->
 
 	<!-- Loading state -->
 	<div id="aeo-audit-loading" class="aeo-audit-loading" <?php echo $aeocas_connected ? '' : 'style="display: none;"'; ?>>
@@ -433,7 +434,6 @@
 			</a>
 		</nav>
 		<?php endif; ?>
-		</div><!-- /.aeo-overview-panel -->
 
 		<section class="aeo-stage-shell <?php echo 'connect' === $aeocas_active_stage ? 'is-active' : ''; ?>" id="stage-connect" data-stage="connect" <?php echo 'connect' === $aeocas_active_stage ? '' : 'style="display: none;"'; ?>>
 			<?php if ( $aeocas_connected ) : ?>

includes/class-aeo-settings.php

@@ -46,9 +46,18 @@ public function add_menu() {
 			30
 		);
 
-		// Submenu items link directly to tab query args on the same page.
-		// We inject raw URLs into the global $submenu array so WordPress
-		// renders them as sidebar links without registering new page slugs.
+		// Rename the auto-generated first submenu entry from "AEO Content"
+		// to "Overview" so it serves as the dashboard landing page.
+		add_submenu_page(
+			$base,
+			__( 'Overview - AEO Content', 'aeo-content-ai-studio' ),
+			__( 'Overview', 'aeo-content-ai-studio' ),
+			$cap,
+			$base,
+			array( $this, 'render_audit_report' )
+		);
+
+		// Additional submenu items link directly to tab query args.
 		global $submenu;
 
 		$tabs = array(
@@ -57,7 +66,6 @@ public function add_menu() {
 			array( 'Opportunities', 'opportunities' ),
 			array( 'Rewrites',      'rewrite' ),
 			array( 'AI Visibility', 'visibility-overview' ),
-			array( 'Settings',      'connect' ),
 		);
 
 		foreach ( $tabs as $item ) {
@@ -67,9 +75,6 @@ public function add_menu() {
 				esc_url( admin_url( $base_url . '&tab=' . $item[1] ) ),
 			);
 		}
-
-		// Remove the auto-generated duplicate top-level submenu entry.
-		remove_submenu_page( $base, $base );
 	}
 
 	/**