fix: gate Soul page behind server version 0.0.67 (#407)

Add SOUL_SUPPORT feature flag to capabilities system requiring
minServerVersion 0.0.67. Hides "Agent Soul" nav item in settings
sidebar for older servers that lack the /soul endpoint.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

apps/agent/components/sidebar/SettingsSidebar.tsx

@@ -33,7 +33,12 @@ const settingsNavItems: NavItem[] = [
     icon: Palette,
     feature: Feature.CUSTOMIZATION_SUPPORT,
   },
-  { name: 'Agent Soul', to: '/settings/soul', icon: Sparkles },
+  {
+    name: 'Agent Soul',
+    to: '/settings/soul',
+    icon: Sparkles,
+    feature: Feature.SOUL_SUPPORT,
+  },
   { name: 'Explore Features', to: '/onboarding/features', icon: Compass },
   { name: 'Revisit Onboarding', to: '/onboarding', icon: RotateCcw },
 ]

apps/agent/lib/browseros/capabilities.ts

@@ -35,6 +35,8 @@ export enum Feature {
   WORKFLOW_SUPPORT = 'WORKFLOW_SUPPORT',
   // previousConversation as structured array (older servers only accept string)
   PREVIOUS_CONVERSATION_ARRAY = 'PREVIOUS_CONVERSATION_ARRAY',
+  // Soul page: agent personality viewer and editor
+  SOUL_SUPPORT = 'SOUL_SUPPORT',
 }
 
 /**
@@ -57,6 +59,7 @@ const FEATURE_CONFIG: { [K in Feature]: FeatureConfig } = {
   [Feature.PROXY_SUPPORT]: { minBrowserOSVersion: '0.39.0.1' },
   [Feature.WORKFLOW_SUPPORT]: { minServerVersion: '0.0.41' },
   [Feature.PREVIOUS_CONVERSATION_ARRAY]: { minServerVersion: '0.0.64' },
+  [Feature.SOUL_SUPPORT]: { minServerVersion: '0.0.67' },
 }
 
 function parseVersion(version: string): number[] {