fix(sidebar): register Self-hosted section and topic so correct nav appears on on-prem docs

- Add dedicated 'self-hosted' sidebar entry (Getting started / Deploy Scalekit / Maintain and upgrade)
- Register '/self-hosted/**/*' in topics
- Map to developer-resources secondary nav

This ensures /self-hosted/* pages no longer fall back to the Resources/Code samples sidebar.

Author: saif-at-scalekit

src/configs/sidebar.config.ts

@@ -275,6 +275,34 @@ export const sidebar = [
       },
     ],
   },
+  {
+    label: 'Self-hosted',
+    id: 'self-hosted',
+    link: '/self-hosted/overview/',
+    icon: 'server',
+    items: [
+      {
+        label: 'Getting started',
+        items: [
+          'self-hosted/overview',
+          'self-hosted/quickstart',
+          'self-hosted/system-requirements',
+        ],
+      },
+      {
+        label: 'Deploy Scalekit',
+        items: [
+          'self-hosted/configuration',
+          'self-hosted/setup-script',
+          'self-hosted/installation',
+        ],
+      },
+      {
+        label: 'Maintain and upgrade',
+        items: ['self-hosted/upgrades', 'self-hosted/troubleshooting'],
+      },
+    ],
+  },
   {
     label: 'Resources',
     id: 'resources',
@@ -573,6 +601,9 @@ export const topics = {
   // Modular SCIM (directory provisioning)
   'modular-scim': ['/directory/**/*'],
 
+  // Self-hosted deployment (dedicated sidebar for on-prem docs)
+  'self-hosted': ['/self-hosted/**/*'],
+
   // Agent connectors (dedicated connectors sidebar — must come before connect)
   'agent-connectors': ['/agentkit/connectors/**/*'],
 
@@ -668,6 +699,9 @@ export const sidebarToSecondaryNav: Record<string, SecondaryNavMapping> = {
   // Modular SCIM sidebar → SaaSKit SCIM tab
   'modular-scim': 'saaskit-scim',
 
+  // Self-hosted deployment → Developer Resources
+  'self-hosted': 'developer-resources',
+
   // Agent connectors sidebar → AgentKit Connectors tab
   'agent-connectors': 'agentkit-connectors',