Restore Desktop Search MCP settings form with Bailian defaults.

Keep boot safe on DSH 0.2 while registering a distinct settings section,
lazy remote.credentials wiring, and credential badge state that survives
describe redaction after Save.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/catalog.js

@@ -6,6 +6,17 @@
  * `custom` is the only kind whose connection details come from the user.
  */
 export const SEARCH_MCP_CATALOG = {
+  bailian: {
+    transport: 'http',
+    url: 'https://dashscope.aliyuncs.com/api/v1/mcps/WebSearch/mcp',
+    authStyle: 'header',
+    authParam: 'Authorization',
+    authPrefix: 'Bearer ',
+    toolName: 'bailian_web_search',
+    countArg: '',
+    apiKeyEnv: 'DASHSCOPE_API_KEY',
+    needsKey: true,
+  },
   tavily: {
     transport: 'http',
     url: 'https://mcp.tavily.com/mcp/',