feat: 添加子图API端点和前端测试面板，包含确定取消继续交互

backend/app/backend.py

@@ -350,3 +350,235 @@ if __name__ == "__main__":
     # 使用环境变量或默认端口 8079（避免与 llama.cpp 的 8081 端口冲突）
     port = int(BACKEND_PORT)
     uvicorn.run(app, host="0.0.0.0", port=port)
+
+
+# ==================== 子图专用 API 端点 ====================
+# 简化版本，直接调用各个子图，无需完整 agent_service
+# 注意：这些是独立测试用的简化端点，方便前端直接调用
+
+@app.get("/subgraph/dictionary/{action}")
+async def dictionary_subgraph_api(
+    action: str,
+    query: str = "",
+    user_id: str = "default"
+):
+    """词典子图简化 API"""
+    from backend.app.agent_subgraphs.dictionary import (
+        DictionaryState,
+        DictionaryAction,
+        parse_intent,
+        format_result
+    )
+    from backend.app.agent_subgraphs.dictionary.nodes import (
+        query_word, translate_text, extract_terms, get_daily_word
+    )
+    
+    # 创建初始状态
+    state = DictionaryState(user_query=query, user_id=user_id)
+    
+    # 处理 action
+    try:
+        if action == "query":
+            state.action = DictionaryAction.QUERY
+            state.action_params = {"word": query}
+            state = query_word(state)
+        elif action == "translate":
+            state.action = DictionaryAction.TRANSLATE
+            state.source_text = query
+            state = translate_text(state)
+        elif action == "daily":
+            state.action = DictionaryAction.DAILY_WORD
+            state = get_daily_word(state)
+        elif action == "extract":
+            state.action = DictionaryAction.EXTRACT
+            state.action_params = {"text": query}
+            state = extract_terms(state)
+        else:
+            # 自动解析意图
+            state = parse_intent(state)
+            # 根据解析后的 action 调用
+            if state.action == DictionaryAction.QUERY:
+                state = query_word(state)
+            elif state.action == DictionaryAction.TRANSLATE:
+                state = translate_text(state)
+            elif state.action == DictionaryAction.DAILY_WORD:
+                state = get_daily_word(state)
+            elif state.action == DictionaryAction.EXTRACT:
+                state = extract_terms(state)
+        
+        # 格式化结果
+        state = format_result(state)
+        
+        return {
+            "success": True,
+            "action": str(state.action),
+            "result": state.final_result,
+            "raw_data": {
+                "word_entry": vars(state.word_entry) if state.word_entry else None,
+                "translated_text": state.translated_text,
+                "extracted_terms": [vars(t) for t in state.extracted_terms],
+                "daily_word": vars(state.daily_word) if state.daily_word else None
+            }
+        }
+    except Exception as e:
+        return {"success": False, "error": str(e)}
+
+
+@app.get("/subgraph/news/{action}")
+async def news_subgraph_api(
+    action: str,
+    query: str = "",
+    user_id: str = "default"
+):
+    """资讯子图简化 API"""
+    from backend.app.agent_subgraphs.news_analysis import (
+        NewsAnalysisState,
+        NewsAction,
+        parse_intent,
+        format_result
+    )
+    from backend.app.agent_subgraphs.news_analysis.nodes import (
+        query_news, analyze_url, extract_keywords, generate_report
+    )
+    
+    # 创建初始状态
+    state = NewsAnalysisState(user_query=query, user_id=user_id)
+    
+    # 处理 action
+    try:
+        if action == "query":
+            state.action = NewsAction.QUERY_NEWS
+            state = query_news(state)
+        elif action == "analyze":
+            state.action = NewsAction.ANALYZE_URL
+            state.custom_urls = [query]
+            state = analyze_url(state)
+        elif action == "keywords":
+            state.action = NewsAction.EXTRACT_KEYWORDS
+            state = extract_keywords(state)
+        elif action == "report":
+            state.action = NewsAction.GENERATE_REPORT
+            state = generate_report(state)
+        else:
+            # 自动解析意图
+            state = parse_intent(state)
+            # 根据解析后的 action 调用
+            if state.action == NewsAction.QUERY_NEWS:
+                state = query_news(state)
+            elif state.action == NewsAction.ANALYZE_URL:
+                state.custom_urls = [query]
+                state = analyze_url(state)
+            elif state.action == NewsAction.EXTRACT_KEYWORDS:
+                state = extract_keywords(state)
+            elif state.action == NewsAction.GENERATE_REPORT:
+                state = generate_report(state)
+        
+        # 格式化结果
+        state = format_result(state)
+        
+        return {
+            "success": True,
+            "action": str(state.action),
+            "result": state.final_result,
+            "raw_data": {
+                "news_items": [vars(item) for item in state.news_items],
+                "extracted_keywords": state.extracted_keywords,
+                "report_content": state.report_content
+            }
+        }
+    except Exception as e:
+        return {"success": False, "error": str(e)}
+
+
+@app.get("/subgraph/contact/{action}")
+async def contact_subgraph_api(
+    action: str,
+    query: str = "",
+    user_id: str = "default"
+):
+    """通讯录子图简化 API"""
+    from backend.app.agent_subgraphs.contact import (
+        ContactState,
+        ContactAction,
+        parse_intent,
+        format_result
+    )
+    from backend.app.agent_subgraphs.contact.nodes import (
+        list_contacts, add_contact, list_emails, generate_email_draft, sniff_contacts
+    )
+    
+    # 创建初始状态
+    state = ContactState(user_query=query, user_id=user_id)
+    
+    # 处理 action
+    try:
+        if action == "list":
+            state.action = ContactAction.CONTACT_LIST
+            state = list_contacts(state)
+        elif action == "add":
+            state.action = ContactAction.CONTACT_ADD
+            state = add_contact(state)
+        elif action == "emails":
+            state.action = ContactAction.EMAIL_LIST
+            state = list_emails(state)
+        elif action == "draft":
+            state.action = ContactAction.EMAIL_SEND
+            state = generate_email_draft(state)
+        elif action == "sniff":
+            state.action = ContactAction.SNIFF_CONTACTS
+            state = sniff_contacts(state)
+        else:
+            # 自动解析意图
+            state = parse_intent(state)
+            # 根据解析后的 action 调用
+            if state.action == ContactAction.CONTACT_LIST:
+                state = list_contacts(state)
+            elif state.action == ContactAction.CONTACT_ADD:
+                state = add_contact(state)
+            elif state.action == ContactAction.EMAIL_LIST:
+                state = list_emails(state)
+            elif state.action == ContactAction.EMAIL_SEND:
+                state = generate_email_draft(state)
+            elif state.action == ContactAction.SNIFF_CONTACTS:
+                state = sniff_contacts(state)
+        
+        # 格式化结果
+        state = format_result(state)
+        
+        return {
+            "success": True,
+            "action": str(state.action),
+            "result": state.final_result,
+            "raw_data": {
+                "contacts": [vars(c) for c in state.contacts],
+                "emails": [vars(e) for e in state.emails],
+                "current_contact": vars(state.current_contact) if state.current_contact else None,
+                "draft": {
+                    "subject": state.draft_subject,
+                    "recipient": state.draft_recipient,
+                    "body": state.draft_body
+                },
+                "sniffed": [vars(c) for c in state.sniffed_contacts]
+            }
+        }
+    except Exception as e:
+        return {"success": False, "error": str(e)}
+
+
+@app.get("/subgraph/help")
+async def subgraph_help_api():
+    """子图 API 使用帮助"""
+    return {
+        "dictionary": {
+            "actions": ["query", "translate", "daily", "extract", "auto"],
+            "endpoint": "/subgraph/dictionary/{action}"
+        },
+        "news": {
+            "actions": ["query", "analyze", "keywords", "report", "auto"],
+            "endpoint": "/subgraph/news/{action}"
+        },
+        "contact": {
+            "actions": ["list", "add", "emails", "draft", "sniff", "auto"],
+            "endpoint": "/subgraph/contact/{action}"
+        }
+    }