feat(mobile): 添加移动端问卷接口

- 新增 AppQuestionnaireController 控制器，提供移动端问卷相关接口
- 实现问卷详情获取和问卷答案提交两个主要功能
- 集成 QuestionnaireIntegrationService 服务进行问卷数据处理
- 使用 ApiResponse 统一接口返回格式
- 添加日志记录和异常处理，提高系统稳定性

src/main/java/com/ycwl/basic/controller/mobile/AppQuestionnaireController.java

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+package com.ycwl.basic.controller.mobile;
+
+import com.ycwl.basic.annotation.IgnoreToken;
+import com.ycwl.basic.constant.BaseContextHandler;
+import com.ycwl.basic.integration.questionnaire.dto.answer.ResponseDetailResponse;
+import com.ycwl.basic.integration.questionnaire.dto.answer.SubmitAnswerRequest;
+import com.ycwl.basic.integration.questionnaire.dto.questionnaire.QuestionnaireResponse;
+import com.ycwl.basic.integration.questionnaire.service.QuestionnaireIntegrationService;
+import com.ycwl.basic.utils.ApiResponse;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * 移动端问卷接口控制器
+ * 
+ * @author Claude Code
+ * @date 2025-09-05
+ */
+@Slf4j
+@RestController
+@RequestMapping("/api/mobile/questionnaire/v1")
+@RequiredArgsConstructor
+public class AppQuestionnaireController {
+
+    private final QuestionnaireIntegrationService questionnaireIntegrationService;
+
+    /**
+     * 获取问卷详情
+     * 包含问卷基本信息和所有题目
+     */
+    @IgnoreToken
+    @GetMapping("/{id}")
+    public ApiResponse<QuestionnaireResponse> getQuestionnaire(@PathVariable Long id) {
+        log.info("移动端获取问卷详情, id: {}", id);
+        try {
+            QuestionnaireResponse questionnaire = questionnaireIntegrationService.getQuestionnaire(id);
+            
+            // 检查问卷状态，只有已发布的问卷才能被移动端访问
+            if (questionnaire.getStatus() != 2) {
+                return ApiResponse.fail("问卷未发布或已停止");
+            }
+            
+            return ApiResponse.success(questionnaire);
+        } catch (Exception e) {
+            log.error("移动端获取问卷详情失败, id: {}", id, e);
+            return ApiResponse.fail("获取问卷详情失败: " + e.getMessage());
+        }
+    }
+
+    /**
+     * 提交问卷答案
+     */
+    @PostMapping("/{id}/submit")
+    public ApiResponse<ResponseDetailResponse> submitAnswer(
+            @PathVariable Long id,
+            @Valid @RequestBody SubmitAnswerRequest request) {
+        
+        String userId = BaseContextHandler.getUserId();
+        log.info("移动端提交问卷答案, questionnaireId: {}, userId: {}, answers count: {}", 
+                id, userId, request.getAnswers() != null ? request.getAnswers().size() : 0);
+        
+        try {
+            // 设置问卷ID和用户ID
+            request.setQuestionnaireId(id);
+            request.setUserId(userId);
+            
+            ResponseDetailResponse response = questionnaireIntegrationService.submitAnswer(request);
+            return ApiResponse.success(response);
+        } catch (Exception e) {
+            log.error("移动端提交问卷答案失败, questionnaireId: {}, userId: {}", id, userId, e);
+            return ApiResponse.fail("提交问卷答案失败: " + e.getMessage());
+        }
+    }
+}