feat(cli-settings): Implement CLI settings management and routes

- Added CLI settings file manager to handle endpoint configurations.
- Introduced API routes for creating, updating, deleting, and listing CLI settings.
- Enhanced session discovery for OpenCode with improved storage structure.
- Updated command building logic for OpenCode and Claude to support new settings.
- Added validation and sanitization for endpoint IDs and settings.
- Implemented functionality to toggle endpoint enabled status and retrieve executable settings paths.

ccw/src/tools/cli-config-manager.ts

@@ -65,8 +65,8 @@ export const DEFAULT_CONFIG: CliConfig = {
     },
     opencode: {
       enabled: true,
-      primaryModel: 'anthropic/claude-sonnet-4-20250514',
-      secondaryModel: 'anthropic/claude-haiku'
+      primaryModel: '',  // Empty = use opencode's default config
+      secondaryModel: ''
     }
   }
 };