refactor(backend): 移除AiGateway动态问卷/画像方法

删除 advanceQuestionnaire/generateProfile 方法及 profileRestTemplate/profileTimeoutMs 相关字段与PostConstruct初始化

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

cfc-backend/src/main/java/com/etotem/cfc/service/AiGateway.java

@@ -11,7 +11,6 @@ import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpEntity;
 import org.springframework.http.ResponseEntity;
-import org.springframework.http.client.SimpleClientHttpRequestFactory;
 import org.springframework.stereotype.Service;
 import org.springframework.web.client.RestTemplate;
 
@@ -44,16 +43,7 @@ public class AiGateway {
     @Value("${python.circuit-breaker.reset-timeout-ms:30000}")
     private int resetTimeoutMs;
 
-    @Value("${langgraph.profile-timeout-ms:90000}")
-    private int profileTimeoutMs;
-
     private final RestTemplate restTemplate = new RestTemplate();
-
-    /**
-     * 画像生成专用客户端：独立 90s 读超时（LangGraph 推理可达 30-60s）。
-     * 在 {@link #init()} 中设置 factory（@Value 注入晚于构造）。
-     */
-    private final RestTemplate profileRestTemplate = new RestTemplate();
     private final ObjectMapper objectMapper = new ObjectMapper();
 
     // 熔断器状态
@@ -63,13 +53,9 @@ public class AiGateway {
 
     @PostConstruct
     public void init() {
-        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
-        factory.setConnectTimeout(5000);
-        factory.setReadTimeout(profileTimeoutMs);
-        profileRestTemplate.setRequestFactory(factory);
         if (enabled) {
-            log.info("AiGateway 已启用: baseUrl={}, timeout={}ms, profile-timeout={}ms",
-                    baseUrl, timeoutMs, profileTimeoutMs);
+            log.info("AiGateway 已启用: baseUrl={}, timeout={}ms",
+                    baseUrl, timeoutMs);
         } else {
             log.info("AiGateway 已禁用, 所有请求走 Dify");
         }
@@ -349,70 +335,5 @@ public class AiGateway {
         }
     }
 
-    /**
-     * 调用 LangGraph 动态出题（/api/v1/qna/advance）
-     */
-    public Map<String, Object> advanceQuestionnaire(Map<String, Object> scene, List<Map<String, Object>> history) {
-        if (!enabled || isCircuitOpen()) return null;
-        try {
-            ObjectNode body = objectMapper.createObjectNode();
-            body.set("scene", objectMapper.valueToTree(scene));
-            ArrayNode hist = body.putArray("history");
-            if (history != null) {
-                for (Map<String, Object> item : history) {
-                    hist.add(objectMapper.valueToTree(item));
-                }
-            }
-            HttpEntity<String> entity = new HttpEntity<>(body.toString(), createJsonHeaders());
-            String url = baseUrl + "/api/v1/qna/advance";
-            ResponseEntity<String> response = restTemplate.postForEntity(url, entity, String.class);
-            if (response.getStatusCode().is2xxSuccessful() && response.getBody() != null) {
-                JsonNode root = objectMapper.readTree(response.getBody());
-                Map<String, Object> result = new LinkedHashMap<>();
-                result.put("action", root.has("action") ? root.get("action").asText() : "ask");
-                result.put("question", root.has("question") ? objectMapper.convertValue(root.get("question"), Map.class) : null);
-                result.put("reason", root.has("reason") ? root.get("reason").asText() : "");
-                consecutiveFailures.set(0);
-                return result;
-            }
-            return null;
-        } catch (Exception e) {
-            log.warn("AiGateway advanceQuestionnaire 调用失败: {}", e.getMessage());
-            recordFailure();
-            return null;
-        }
-    }
-
-    /**
-     * 调用 LangGraph 生成画像（/api/v1/qna/profile，独立 90s 读超时）
-     */
-    public Map<String, Object> generateProfile(Map<String, Object> scene, List<Map<String, Object>> history) {
-        if (!enabled || isCircuitOpen()) return null;
-        try {
-            ObjectNode body = objectMapper.createObjectNode();
-            body.set("scene", objectMapper.valueToTree(scene));
-            ArrayNode hist = body.putArray("history");
-            if (history != null) {
-                for (Map<String, Object> item : history) {
-                    hist.add(objectMapper.valueToTree(item));
-                }
-            }
-            HttpEntity<String> entity = new HttpEntity<>(body.toString(), createJsonHeaders());
-            String url = baseUrl + "/api/v1/qna/profile";
-            ResponseEntity<String> response = profileRestTemplate.postForEntity(url, entity, String.class);
-            if (response.getStatusCode().is2xxSuccessful() && response.getBody() != null) {
-                JsonNode root = objectMapper.readTree(response.getBody());
-                Map<String, Object> result = new LinkedHashMap<>();
-                result.put("profile", root.has("profile") ? objectMapper.convertValue(root.get("profile"), Map.class) : null);
-                result.put("kb_used", root.has("kb_used") ? root.get("kb_used").asBoolean() : false);
-                consecutiveFailures.set(0);
-                return result;
-            }
-            return null;
-        } catch (Exception e) {
-            log.warn("AiGateway generateProfile 调用失败: {}", e.getMessage());
-            recordFailure();
-            return null;
-        }
-    }
+    
 }