feat(task): FamilyContextService AI任务查询改查tasks表（source_type=ai）

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

@@ -54,6 +54,9 @@ public class FamilyContextService {
     @Resource
     private GrowthTaskMapper growthTaskMapper;
 
+    @Resource
+    private TaskMapper taskMapper;
+
     @Resource
     private PiisService piisService;
 
@@ -122,22 +125,22 @@ public class FamilyContextService {
                     c.put("healthReport", reportInfo);
                 }
 
-                List<GrowthTask> aiTasks = growthTaskMapper.selectList(
-                        new LambdaQueryWrapper<GrowthTask>()
-                                .eq(GrowthTask::getType, "AI_GENERATED")
-                                .eq(GrowthTask::getEnabled, 1)
-                                .orderByDesc(GrowthTask::getCreatedAt)
+                // 统一任务系统：AI 任务已迁入 tasks 表（source_type=ai）
+                List<Task> aiTasks = taskMapper.selectList(
+                        new LambdaQueryWrapper<Task>()
+                                .eq(Task::getSourceType, "ai")
+                                .orderByDesc(Task::getCreatedAt)
                                 .last("LIMIT 10"));
                 if (aiTasks != null && !aiTasks.isEmpty()) {
                     List<Map<String, Object>> taskList = new ArrayList<>();
-                    for (GrowthTask gt : aiTasks) {
+                    for (Task gt : aiTasks) {
                         Map<String, Object> t = new LinkedHashMap<>();
                         t.put("id", gt.getId());
                         t.put("title", gt.getTitle());
                         t.put("description", gt.getDescription());
-                        t.put("dimension", gt.getDimension());
-                        t.put("rewardPoints", gt.getRewardPoints());
-                        t.put("sourceConversationId", gt.getSourceConversationId());
+                        t.put("dimension", gt.getDimensionCode());
+                        t.put("rewardPoints", gt.getPoints());
+                        t.put("sourceConversationId", gt.getSourceId());
                         taskList.add(t);
                     }
                     c.put("aiGeneratedTasks", taskList);