fix(mcp): route GaussDB through desktop bridge

crates/dbx-core/assets/database-drivers.manifest.json

@@ -707,7 +707,7 @@
       "dbType": "gaussdb",
       "label": "GaussDB",
       "runtimeMode": "native",
-      "mcpMode": "direct",
+      "mcpMode": "bridge",
       "singleConnectionPool": false,
       "metadataConnectionScoped": false,
       "skipTcpProbe": false,
@@ -975,7 +975,7 @@
       "dbType": "opengauss",
       "label": "openGauss",
       "runtimeMode": "native",
-      "mcpMode": "direct",
+      "mcpMode": "bridge",
       "singleConnectionPool": false,
       "metadataConnectionScoped": false,
       "skipTcpProbe": false,

packages/node-core/src/diagnostics.ts

@@ -2,7 +2,7 @@ import { access, readFile } from "node:fs/promises";
 import { bridgePortFilePath, dbPath, appDataDir } from "./paths.js";
 import { inspectConnectionStore } from "./connections.js";
 
-export const DIRECT_QUERY_TYPES = ["postgres", "redshift", "mysql", "doris", "starrocks", "manticoresearch", "sqlite", "rqlite", "gaussdb", "kwdb", "opengauss", "questdb"] as const;
+export const DIRECT_QUERY_TYPES = ["postgres", "redshift", "mysql", "doris", "starrocks", "manticoresearch", "sqlite", "rqlite", "kwdb", "questdb"] as const;
 
 export type DirectQueryType = (typeof DIRECT_QUERY_TYPES)[number];
 
@@ -30,6 +30,7 @@ export const BRIDGE_REQUIRED_TYPES = [
   "vastbase",
   "goldendb",
   "databend",
+  "gaussdb",
   "yashandb",
   "databricks",
   "saphana",
@@ -37,6 +38,7 @@ export const BRIDGE_REQUIRED_TYPES = [
   "vertica",
   "firebird",
   "exasol",
+  "opengauss",
   "oceanbase-oracle",
   "gbase",
   "tdengine",

packages/node-core/tests/driver-manifest.test.ts

@@ -62,6 +62,14 @@ test("Manticore Search is direct-query capable", () => {
   assert.equal(DIRECT_QUERY_TYPES.includes("manticoresearch" as any), true);
 });
 
+test("GaussDB family requires the DBX Desktop bridge for MCP", () => {
+  for (const dbType of ["gaussdb", "opengauss"] as const) {
+    assert.equal(isDirectQueryType(dbType), false);
+    assert.equal(DIRECT_QUERY_TYPES.includes(dbType as any), false);
+    assert.equal(BRIDGE_REQUIRED_TYPES.includes(dbType as any), true);
+  }
+});
+
 test("driver manifest declares support levels and product capabilities", () => {
   const manifest = loadManifest();