feat(identity): close free-task progress, level card, hot threshold

Finish remaining 1:1 parity gaps: free-task done/progress DTO with
daily marks, user-center level/integral card UI, configurable forum
hot recommend threshold, and task progress bars.

assets/admin/src/schema/sections/forum/credits.js

@@ -11,6 +11,7 @@ export const creditsSchema = {
     bbs_credits_score_extra: 3,
     bbs_credits_essence: 10,
     bbs_credits_posts_hot: 5,
+    bbs_hot_recommend_threshold: 500,
     bbs_credits_adopted: 20,
     bbs_credits_daily_max: 50,
   },
@@ -27,6 +28,7 @@ export const creditsSchema = {
         { key: 'bbs_credits_score_extra', label: '被加分', type: 'number', default: 3, min: 0 },
         { key: 'bbs_credits_essence', label: '被设精华', type: 'number', default: 10, min: 0 },
         { key: 'bbs_credits_posts_hot', label: '成为热帖', type: 'number', default: 5, min: 0 },
+        { key: 'bbs_hot_recommend_threshold', label: '热帖推荐分阈值', type: 'number', default: 500, min: 1, help: '推荐分达到该值触发热帖奖励与勋章累计' },
         { key: 'bbs_credits_adopted', label: '被采纳', type: 'number', default: 20, min: 0 },
         { key: 'bbs_credits_daily_max', label: '每日积分上限', type: 'number', default: 50, min: 0, help: '0 = 不限' },
       ],