feat: recommend case list

apps/case/mobile.py

@@ -1,15 +1,14 @@
 """移动端病例列表（首页 / 病例页 5 个入口）。
 
-均读 `case_base`，只取**已发布**病例（publish_status=2 & status=1 & is_deleted=0）：
-
-- 5.1 推荐病例（个性化）   GET /api/case/mobile/recommended/
+- 5.1 推荐病例           GET /api/case/mobile/recommended/  ← **返回病例库全部已发布病例**（不做个性化）
 - 5.2 科室专项           GET /api/case/mobile/specialty/
 - 5.3 薄弱环节           GET /api/case/mobile/weak/
 - 5.4 教学互动           GET /api/case/mobile/teaching/
 - 5.5 教师任务           GET /api/case/mobile/teacher-task/（CMS 暂无指派，先同教学互动）
 
-个性化/薄弱口径读只读表 training_record（user_id=当前用户、status='completed'），
-分数按 score_type 归一百分制后比较，与《个人中心》一致。
+五个入口均只取**已发布**病例（publish_status=2 & status=1 & is_deleted=0）；
+5.1 推荐返回全部已发布病例、按创建时间倒序（不再做个性化推荐排序）。
+薄弱口径读只读表 training_record（user_id=当前用户、status='completed'），分数按 score_type 归一百分制后比较，与《个人中心》一致。
 """
 from django.db.models import Q
 from rest_framework import serializers
@@ -123,44 +122,17 @@ def _paginate(qs, request, *, case_stats=None):
     return paginator.get_paginated_response(data)
 
 
-# ── 5.1 推荐病例（个性化）────────────────────────────────────────────────────
+# ── 5.1 推荐病例（返回病例库全部已发布病例）────────────────────────────────────
 
-def _recommend_score(case, *, dept_id, trained_ids, weak_dims):
-    """个性化推荐分：未训练 > 同科室 > 命中薄弱能力标签。"""
-    score = 0
-    if case.id not in trained_ids:
-        score += 2
-    if dept_id and case.department_id == dept_id:
-        score += 1
-    if weak_dims and case.competency_tags:
-        tags = ' '.join(str(t) for t in case.competency_tags)
-        if any(w and w in tags for w in weak_dims):
-            score += 1
-    return score
-
-
-@extend_schema(summary='推荐病例（个性化）', tags=['病例列表'])
+@extend_schema(summary='推荐病例（返回病例库全部已发布病例）', tags=['病例列表'])
 @api_view(['GET'])
 @permission_classes([IsAuthenticated])
 def recommended(request):
-    user = request.user
-    qs = _apply_common_filters(_published(), request)
-    cases = list(qs.select_related('department'))
-
-    trained_ids = set(
-        _completed_records(user).values_list('case_id', flat=True)
-    )
-    weak_dims = [str(w) for w in (user.weak_dimensions or [])]
-    dept_id = user.department_id
-
-    cases.sort(
-        key=lambda c: (
-            _recommend_score(c, dept_id=dept_id, trained_ids=trained_ids, weak_dims=weak_dims),
-            c.created_at or c.id,
-        ),
-        reverse=True,
-    )
-    return _paginate(cases, request)
+    """返回病例库**全部已发布病例**（publish_status=2 & status=1 & is_deleted=0），
+    支持通用筛选（search / case_type / difficulty / department），按创建时间倒序。"""
+    qs = _apply_common_filters(_published(), request) \
+        .select_related('department').order_by('-created_at', '-id')
+    return _paginate(qs, request)
 
 
 # ── 5.2 科室专项 ────────────────────────────────────────────────────────────

test/test_mobile_case_list.py

@@ -120,18 +120,22 @@ class MobileCaseListTest(TransactionTestCase):
         for url in (REC_URL, SPEC_URL, WEAK_URL, TEACH_URL, TASK_URL):
             self.assertEqual(APIClient().get(url).status_code, 401, url)
 
-    # ── 5.1 推荐 ───────────────────────────────────────────────────────────
-    def test_recommended_only_published(self):
+    # ── 5.1 推荐（返回病例库全部已发布病例）───────────────────────────────────
+    def test_recommended_returns_all_published(self):
+        # 返回全部已发布病例；草稿/禁用/已下架(软删) 均不返回
         resp = self.client.get(REC_URL)
         self.assertEqual(resp.status_code, 200, resp.content)
-        ids = set(self._ids(resp))
         self.assertEqual(resp.json()['count'], 3)
+        ids = set(self._ids(resp))
         self.assertEqual(ids, {self.pub_trad1.id, self.pub_teach.id, self.pub_trad2.id})
+        titles = {r['title'] for r in resp.json()['results']}
+        self.assertNotIn('草稿病例', titles)
+        self.assertNotIn('禁用病例', titles)
+        self.assertNotIn('已下架病例', titles)
 
-    def test_recommended_untrained_first(self):
-        # pub_teach 未训练且命中薄弱标签+同科室 → 应排在已训练病例之前
-        resp = self.client.get(REC_URL)
-        self.assertEqual(self._ids(resp)[0], self.pub_teach.id, resp.content)
+    def test_recommended_supports_search(self):
+        resp = self.client.get(REC_URL, {'search': '心梗'})
+        self.assertEqual(self._ids(resp), [self.pub_trad1.id], resp.content)
 
     # ── 5.2 科室专项 ──────────────────────────────────────────────────────────
     def test_specialty_default_user_dept(self):