fix: deduplicate workbench requests and remove unused map paths

src/features/workbench/map-workbench-page.tsx

@@ -956,19 +956,15 @@ function MapWorkbenchContent({
   }
 
   async function handleStartNewAgentSession() {
-    mapController.clearScadaAnalysis();
     await agent.startNewSession();
   }
 
   async function handleLoadAgentHistorySession(sessionId: string) {
-    const changesSession = sessionId !== agent.sessionId;
     const loaded = await agent.loadHistorySession(sessionId);
     if (!loaded) throw new Error("会话打开已取消");
-    if (changesSession) mapController.clearScadaAnalysis();
   }
 
   async function handleOpenTaskCollaboration(taskId: string, discussion?: InvestigationDiscussion) {
-    mapController.clearScadaAnalysis();
     const id = await agent.openTaskCollaboration(taskId, discussion);
     if (discussion?.reference && id) agent.setContentReference(discussion.reference);
     readingWorkspace?.close();
@@ -980,7 +976,6 @@ function MapWorkbenchContent({
     target: TaskExecutionHistoryTarget,
     knownRunId?: string
   ) {
-    mapController.clearScadaAnalysis();
     let runId = knownRunId;
     if (!runId) {
       const runs = await fetchOperationalTaskRuns(taskId, getAccessToken);
@@ -999,12 +994,8 @@ function MapWorkbenchContent({
   }
 
   async function handleDeleteAgentHistorySession(sessionId: string) {
-    const clearsActiveAnalysis = sessionId === agent.sessionId;
     const deleted = await agent.deleteHistorySession(sessionId);
     if (!deleted) throw new Error("会话删除失败，请重试");
-    if (deleted && clearsActiveAnalysis) {
-      mapController.clearScadaAnalysis();
-    }
   }
 
   async function handleAgentMapAction(