feat(objects): show functions and procedures in sidebar tree

Add list_objects support for agent-driven databases (Dameng, Oracle, etc.)
and ExternalDriver plugin connections. SQL Server dbo schema now uses
listObjects to display grouped object nodes including routines.

- Add list_objects RPC to JDBC agent plugin
- Add extract_agent and ExternalDriver branches in list_objects_core
- Add get_object_source support for agent connections
- Click function/procedure nodes to view source via object browser
- Fix duplicate tree node IDs when same name exists as view and function

src/lib/sqlServerTree.ts

@@ -1,4 +1,5 @@
-import type { TableInfo, TreeNode } from "@/types/database";
+import type { ObjectInfo, TreeNode } from "@/types/database";
+import { buildGroupedObjectTreeNodes } from "@/lib/tableTree";
 
 export const SQLSERVER_DEFAULT_SCHEMA = "dbo";
 
@@ -10,20 +11,18 @@ export function buildSqlServerDatabaseTreeNodes(
   connectionId: string,
   database: string,
   schemas: string[],
-  defaultSchemaTables: TableInfo[],
+  defaultSchemaObjects: ObjectInfo[],
 ): TreeNode[] {
   const databaseNodeId = `${connectionId}:${database}`;
   const defaultSchema = schemas.find(isDefaultSchema) || SQLSERVER_DEFAULT_SCHEMA;
-  const defaultTableNodes = defaultSchemaTables.map((table) => ({
-    id: `${databaseNodeId}:${defaultSchema}:${table.name}`,
-    label: table.name,
-    type: (table.table_type === "VIEW" ? "view" : "table") as "view" | "table",
+
+  const defaultObjectNodes = buildGroupedObjectTreeNodes({
+    nodeId: databaseNodeId,
     connectionId,
     database,
     schema: defaultSchema,
-    isExpanded: false,
-    children: [],
-  }));
+    objects: defaultSchemaObjects,
+  });
 
   const schemaNodes = schemas
     .filter((schema) => !isDefaultSchema(schema))
@@ -38,5 +37,5 @@ export function buildSqlServerDatabaseTreeNodes(
       children: [],
     }));
 
-  return [...defaultTableNodes, ...schemaNodes];
+  return [...defaultObjectNodes, ...schemaNodes];
 }

src/lib/tableTree.ts

@@ -108,7 +108,7 @@ export function buildGroupedObjectTreeNodes({
       objectCount: items.length,
       isExpanded: false,
       children: items.map((obj) => ({
-        id: `${nodeId}:${obj.name}`,
+        id: `${nodeId}:${def.key}:${obj.name}`,
         label: obj.name,
         type: def.childType,
         connectionId,