fix(ssa): Fix 7 integration bugs and refactor frontend unified state management

Bug fixes:
- Fix garbled error messages in chat (TypeWriter rendering issue)
- Fix R engine NA crash in descriptive.R (defensive isTRUE/is.na checks)
- Fix intent misclassification for statistical significance queries
- Fix step 2 results not displayed (accept warning status alongside success)
- Fix incomplete R code download (only step 1 included)
- Fix multi-task state confusion (clicking old card shows new results)
- Add R engine and backend parameter logging for debugging

Refactor - Unified Record Architecture:
- Replace 12 global singleton fields with AnalysisRecord as single source of truth
- Remove isWorkflowMode branching across all components
- One Analysis = One Record = N Steps paradigm
- selectRecord only sets currentRecordId, all rendering derives from currentRecord
- Fix cross-hook-instance issue: executeWorkflow fallback to store currentRecordId

Updated files: ssaStore, useWorkflow, useAnalysis, SSAChatPane, SSAWorkspacePane,
SSACodeModal, WorkflowTimeline, QueryService, WorkflowExecutorService, descriptive.R

Tested: Manual integration test passed - multi-task switching, R code completeness
Co-authored-by: Cursor <cursoragent@cursor.com>

frontend-v2/src/modules/ssa/components/SSAChatPane.tsx

@@ -24,6 +24,7 @@ import {
 } from 'lucide-react';
 import { useNavigate } from 'react-router-dom';
 import { useSSAStore } from '../stores/ssaStore';
+import type { AnalysisRecord } from '../stores/ssaStore';
 import { useAnalysis } from '../hooks/useAnalysis';
 import { useWorkflow } from '../hooks/useWorkflow';
 import type { SSAMessage } from '../types';
@@ -40,16 +41,15 @@ export const SSAChatPane: React.FC = () => {
     mountedFile,
     setMountedFile,
     setCurrentSession,
-    setActivePane,
     setWorkspaceOpen,
-    currentPlan,
     isLoading,
     isExecuting,
     error,
     setError,
     addToast,
     addMessage,
-    selectAnalysisRecord,
+    selectRecord,
+    analysisHistory,
     dataProfile,
     dataProfileLoading,
   } = useSSAStore();
@@ -78,10 +78,9 @@ export const SSAChatPane: React.FC = () => {
   }, []);
 
   useEffect(() => {
-    // 延迟滚动，确保 DOM 更新完成
     const timer = setTimeout(scrollToBottom, 100);
     return () => clearTimeout(timer);
-  }, [messages, currentPlan, scrollToBottom]);
+  }, [messages, scrollToBottom]);
 
   const handleBack = () => {
     navigate(-1);
@@ -154,18 +153,20 @@ export const SSAChatPane: React.FC = () => {
     const query = inputValue;
     setInputValue('');
 
+    // Immediately show user message in chat
+    addMessage({
+      id: crypto.randomUUID(),
+      role: 'user',
+      content: query,
+      createdAt: new Date().toISOString(),
+    });
+
     try {
       if (currentSession?.id) {
         // Phase Q: 先做意图解析，低置信度时追问
         const intentResp = await parseIntent(currentSession.id, query);
 
         if (intentResp.needsClarification && intentResp.clarificationCards?.length > 0) {
-          addMessage({
-            id: crypto.randomUUID(),
-            role: 'user',
-            content: query,
-            createdAt: new Date().toISOString(),
-          });
           addMessage({
             id: crypto.randomUUID(),
             role: 'assistant',
@@ -180,7 +181,7 @@ export const SSAChatPane: React.FC = () => {
           return;
         }
 
-        // 置信度足够 → 直接生成工作流计划
+        // 置信度足够 → 直接生成工作流计划（不再重复添加用户消息）
         await generateWorkflowPlan(currentSession.id, query);
       } else {
         await generatePlan(query);
@@ -235,15 +236,13 @@ export const SSAChatPane: React.FC = () => {
     }
   };
 
-  // 打开工作区，可选择特定的分析记录
   const handleOpenWorkspace = useCallback((recordId?: string) => {
     if (recordId) {
-      selectAnalysisRecord(recordId);
+      selectRecord(recordId);
     } else {
       setWorkspaceOpen(true);
-      setActivePane('sap');
     }
-  }, [selectAnalysisRecord, setWorkspaceOpen, setActivePane]);
+  }, [selectRecord, setWorkspaceOpen]);
 
   const formatFileSize = (bytes: number) => {
     if (bytes < 1024) return `${bytes}B`;
@@ -321,21 +320,31 @@ export const SSAChatPane: React.FC = () => {
                     msg.content
                   )}
 
-                  {/* SAP 卡片 - 只有消息中明确标记为 sap 类型时才显示 */}
-                  {msg.artifactType === 'sap' && msg.recordId && (
-                    <button className="sap-card" onClick={() => handleOpenWorkspace(msg.recordId)}>
-                      <div className="sap-card-left">
-                        <div className="sap-card-icon">
-                          <FileSignature size={16} />
+                  {/* SAP / Result 卡片 - 统一行为：selectRecord + 打开工作区 */}
+                  {(msg.artifactType === 'sap' || msg.artifactType === 'result') && msg.recordId && (() => {
+                    const rec = analysisHistory.find((r: AnalysisRecord) => r.id === msg.recordId);
+                    const isCompleted = rec?.status === 'completed';
+                    const isSap = msg.artifactType === 'sap';
+                    return (
+                      <button className="sap-card" onClick={() => handleOpenWorkspace(msg.recordId)}>
+                        <div className="sap-card-left">
+                          <div className="sap-card-icon">
+                            {isSap ? <FileSignature size={16} /> : <BarChart2 size={16} />}
+                          </div>
+                          <div className="sap-card-content">
+                            <div className="sap-card-title">
+                              {isSap ? '查看分析计划' : '查看分析结果'}
+                              {isCompleted && <span className="sap-card-badge">已完成</span>}
+                            </div>
+                            <div className="sap-card-hint">
+                              {rec?.plan?.title || '点击打开工作区查看详情'}
+                            </div>
+                          </div>
                         </div>
-                        <div className="sap-card-content">
-                          <div className="sap-card-title">查看分析计划 (SAP)</div>
-                          <div className="sap-card-hint">参数映射完成，等待执行</div>
-                        </div>
-                      </div>
-                      <ArrowRight size={16} className="sap-card-arrow" />
-                    </button>
-                  )}
+                        <ArrowRight size={16} className="sap-card-arrow" />
+                      </button>
+                    );
+                  })()}
                 </div>
               </div>
             );