feat: add MCP server selection to pipeline extensions (#1754)

* Initial plan

* Backend: Add MCP server selection support to pipeline extensions

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Frontend: Add MCP server selection UI to pipeline extensions

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* perf: ui

* perf: ui

* perf: desc for extension page

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>
Co-authored-by: Junyan Qin <rockchinq@gmail.com>

pkg/pipeline/pipelinemgr.py

@@ -71,6 +71,9 @@ class RuntimePipeline:
     
     bound_plugins: list[str]
     """绑定到此流水线的插件列表（格式：author/plugin_name）"""
+    
+    bound_mcp_servers: list[str]
+    """绑定到此流水线的MCP服务器列表（格式：uuid）"""
 
     def __init__(
         self,
@@ -82,15 +85,19 @@ class RuntimePipeline:
         self.pipeline_entity = pipeline_entity
         self.stage_containers = stage_containers
         
-        # Extract bound plugins from extensions_preferences
+        # Extract bound plugins and MCP servers from extensions_preferences
         extensions_prefs = pipeline_entity.extensions_preferences or {}
         plugin_list = extensions_prefs.get('plugins', [])
         self.bound_plugins = [f"{p['author']}/{p['name']}" for p in plugin_list] if plugin_list else []
+        
+        mcp_server_list = extensions_prefs.get('mcp_servers', [])
+        self.bound_mcp_servers = mcp_server_list if mcp_server_list else []
 
     async def run(self, query: pipeline_query.Query):
         query.pipeline_config = self.pipeline_entity.config
-        # Store bound plugins in query for filtering
+        # Store bound plugins and MCP servers in query for filtering
         query.variables['_pipeline_bound_plugins'] = self.bound_plugins
+        query.variables['_pipeline_bound_mcp_servers'] = self.bound_mcp_servers
         await self.process_query(query)
 
     async def _check_output(self, query: pipeline_query.Query, result: pipeline_entities.StageProcessResult):

pkg/pipeline/preproc/preproc.py

@@ -65,9 +65,14 @@ class PreProcessor(stage.PipelineStage):
             query.use_llm_model_uuid = llm_model.model_entity.uuid
 
             if llm_model.model_entity.abilities.__contains__('func_call'):
-                # Get bound plugins for filtering tools
+                # Get bound plugins and MCP servers for filtering tools
                 bound_plugins = query.variables.get('_pipeline_bound_plugins', None)
-                query.use_funcs = await self.ap.tool_mgr.get_all_tools(bound_plugins)
+                bound_mcp_servers = query.variables.get('_pipeline_bound_mcp_servers', None)
+                query.use_funcs = await self.ap.tool_mgr.get_all_tools(bound_plugins, bound_mcp_servers)
+
+                self.ap.logger.debug(f'Bound plugins: {bound_plugins}')
+                self.ap.logger.debug(f'Bound MCP servers: {bound_mcp_servers}')
+                self.ap.logger.debug(f'Use funcs: {query.use_funcs}')
 
         variables = {
             'session_id': f'{query.session.launcher_type.value}_{query.session.launcher_id}',