fix(diet): 饮食推荐控制器 familyId 改 required=false，无家庭时返回 noFamily 而非抛 ServletRequestBindingException

cfc-backend/src/main/java/com/etotem/cfc/controller/diet/DietRecommendationController.java

@@ -16,8 +16,11 @@ public class DietRecommendationController {
 
     @PostMapping("/today")
     public Result<Map> getTodayRecommendation(
-            @RequestAttribute("familyId") Long familyId,
+            @RequestAttribute(value = "familyId", required = false) Long familyId,
             @RequestBody(required = false) Map<String, String> request) {
+        if (familyId == null) {
+            return Result.noFamily("请先创建或加入家庭");
+        }
         String date = (request != null) ? request.get("date") : null;
         if (date == null || date.isEmpty()) {
             return Result.error("date不能为空");
@@ -27,30 +30,42 @@ public class DietRecommendationController {
 
     @PostMapping("/generate")
     public Result<Map> generateRecommendation(
-            @RequestAttribute("familyId") Long familyId,
+            @RequestAttribute(value = "familyId", required = false) Long familyId,
             @RequestBody Map<String, String> request) {
+        if (familyId == null) {
+            return Result.noFamily("请先创建或加入家庭");
+        }
         return Result.success(dietRecommendationService.generateRecommendation(familyId, request));
     }
 
     @PostMapping("/update")
     public Result<Void> updateRecommendation(
-            @RequestAttribute("familyId") Long familyId,
+            @RequestAttribute(value = "familyId", required = false) Long familyId,
             @RequestBody Map<String, Object> request) {
+        if (familyId == null) {
+            return Result.noFamily("请先创建或加入家庭");
+        }
         dietRecommendationService.updateRecommendation(familyId, request);
         return Result.success(null);
     }
 
     @PostMapping("/regenerate")
     public Result<Map> regenerateRecommendation(
-            @RequestAttribute("familyId") Long familyId,
+            @RequestAttribute(value = "familyId", required = false) Long familyId,
             @RequestBody Map<String, Object> request) {
+        if (familyId == null) {
+            return Result.noFamily("请先创建或加入家庭");
+        }
         return Result.success(dietRecommendationService.regenerateRecommendation(familyId, request));
     }
 
     @PostMapping("/complete")
     public Result<Void> completeRecommendation(
-            @RequestAttribute("familyId") Long familyId,
+            @RequestAttribute(value = "familyId", required = false) Long familyId,
             @RequestBody Map<String, Object> request) {
+        if (familyId == null) {
+            return Result.noFamily("请先创建或加入家庭");
+        }
         dietRecommendationService.completeRecommendation(familyId, request);
         return Result.success(null);
     }