Fix: clean Qdrant cache when history empty, remove retest button

app.py

@@ -422,6 +422,14 @@ async def detect(
     uploaded_paths = [p for _, p in saved_info]
 
     if len(history_before) == 0:
+        # 清理可能的 Qdrant 残留数据（用户可能通过历史管理删除了所有图片）
+        try:
+            from module.qdrant_manager import qdrant_delete_user_collections
+            qdrant_delete_user_collections(uname)
+        except Exception:
+            pass
+        _qd_caches.pop(uname, None)
+
         per_image_results = {p: '通过（首次上传，跳过比对）' for _, p in saved_info}
         update_metadata(user_dir, saved_info, per_image_results)
         try:

index.html

@@ -678,9 +678,7 @@ function renderResult(data) {
     }
   }
 
-  // 再测一张按钮
-  html += `<div style="text-align:center;margin:20px 0"><button class="btn btn-primary" onclick="document.getElementById('resultArea').innerHTML='';document.getElementById('queryInput').value='';document.getElementById('queryFileList').innerHTML='';document.getElementById('uploadSection').classList.remove('hidden');isDemoMode=false;">🔄 再测一张</button></div>`;
-
+  // 上传区域始终可见，用户可随时重新选择图片上传
   resultArea.innerHTML = html;
 }
 

module/qdrant_manager.py

@@ -136,6 +136,22 @@ def qdrant_query_scene(username, scene_type):
     return cache
 
 
+def qdrant_delete_user_collections(username):
+    """删除指定用户的所有 Qdrant collection（text + complex）
+
+    用于用户历史库为空时清理残留数据
+    """
+    client = _get_client()
+    for scene_type in ('text', 'complex'):
+        cname = _collection_name(username, scene_type)
+        try:
+            if client.collection_exists(cname):
+                client.delete_collection(cname)
+                print(f"[Qdrant] 已删除 collection: {cname}")
+        except Exception as e:
+            print(f"[Qdrant] 删除 collection {cname} 失败: {e}")
+
+
 # ==================== 向量相似度搜索 ====================
 
 def qdrant_search_similar(username, scene_type, query_vector, top_k=3, score_threshold=0.0):