fix: preference categorization for MCP server and SCANOSS preferences (#16346)

Fixes GH-16338

- McpServersPreferenceSchema: remove duplicate entries and ensure headers preference is included in additionalProperties
- Update SCANOSS API key preference to be categorized under AI features.

Author: ndoschek

packages/ai-mcp/src/common/mcp-preferences.ts

@@ -102,41 +102,16 @@ Example configuration:\n\
                         title: nls.localize('theia/ai/mcp/servers/serverAuthTokenHeader/title', 'Authentication Header Name'),
                         markdownDescription: nls.localize('theia/ai/mcp/servers/serverAuthTokenHeader/mdDescription',
                             'The header name to use for the server authentication token. If not provided, "Authorization" with "Bearer" will be used.'),
+                    },
+                    headers: {
+                        type: 'object',
+                        title: nls.localize('theia/ai/mcp/servers/headers/title', 'Headers'),
+                        markdownDescription: nls.localize('theia/ai/mcp/servers/headers/mdDescription',
+                            'Optional additional headers included with each request to the server.'),
                     }
                 },
                 required: []
             }
-        },
-        autostart: {
-            type: 'boolean',
-            title: nls.localize('theia/ai/mcp/servers/autostart/title', 'Autostart'),
-            markdownDescription: nls.localize('theia/ai/mcp/servers/autostart/mdDescription',
-                'Automatically start this server when the frontend starts. Newly added servers are not immediately auto started, but on restart'),
-            default: true
-        },
-        serverUrl: {
-            type: 'string',
-            title: nls.localize('theia/ai/mcp/servers/serverUrl/title', 'Server URL'),
-            markdownDescription: nls.localize('theia/ai/mcp/servers/serverUrl/mdDescription',
-                'The URL of the remote MCP server. If provided, the server will connect to this URL instead of starting a local process.'),
-        },
-        serverAuthToken: {
-            type: 'string',
-            title: nls.localize('theia/ai/mcp/servers/serverAuthToken/title', 'Authentication Token'),
-            markdownDescription: nls.localize('theia/ai/mcp/servers/serverAuthToken/mdDescription',
-                'The authentication token for the server, if required. This is used to authenticate with the remote server.'),
-        },
-        serverAuthTokenHeader: {
-            type: 'string',
-            title: nls.localize('theia/ai/mcp/servers/serverAuthTokenHeader/title', 'Authentication Header Name'),
-            markdownDescription: nls.localize('theia/ai/mcp/servers/serverAuthTokenHeader/mdDescription',
-                'The header name to use for the server authentication token. If not provided, "Authorization" with "Bearer" will be used.'),
-        },
-        headers: {
-            type: 'object',
-            title: nls.localize('theia/ai/mcp/servers/headers/title', 'Headers'),
-            markdownDescription: nls.localize('theia/ai/mcp/servers/headers/mdDescription',
-                'Optional additional headers included with each request to the server.'),
         }
-    },
+    }
 };

packages/scanoss/src/common/scanoss-preferences.ts

@@ -16,7 +16,7 @@
 
 import { PreferenceSchema } from '@theia/core/lib/common/preferences/preference-schema';
 
-export const SCAN_OSS_API_KEY_PREF = 'SCANOSS.apiKey';
+export const SCAN_OSS_API_KEY_PREF = 'ai-features.SCANOSS.apiKey';
 
 export const ScanOSSPreferencesSchema: PreferenceSchema = {
     properties: {