feat(settings): 添加删除禁用代理功能

- 在数据库 CRUD 层添加删除所有已禁用代理的方法
- 在设置页面界面添加删除禁用项按钮
- 更新表格列数以适应新的操作列
- 在 JavaScript 中添加按钮元素引用
- 实现代理连通性测试函数用于验证功能
- 添加代理测试失败时自动禁用机制

src/database/crud.py

@@ -532,6 +532,11 @@ def delete_proxy(db: Session, proxy_id: int) -> bool:
     db.commit()
     return True
 
+def delete_disabled_proxies(db: Session) -> int:
+    """删除所有已禁用代理"""
+    deleted = db.query(Proxy).filter(Proxy.enabled == False).delete(synchronize_session=False)
+    db.commit()
+    return deleted
 
 def update_proxy_last_used(db: Session, proxy_id: int) -> bool:
     """更新代理最后使用时间"""

src/web/routes/settings.py

@@ -468,6 +468,58 @@ class ProxyUpdateRequest(BaseModel):
     enabled: Optional[bool] = None
     priority: Optional[int] = None
 
+def _test_proxy_connectivity(proxy_url: str) -> dict:
+    """测试代理连通性并返回统一结果。"""
+    import time
+    from curl_cffi import requests as cffi_requests
+
+    test_url = "https://api.ipify.org?format=json"
+    start_time = time.time()
+
+    proxies_dict = {
+        "http": proxy_url,
+        "https": proxy_url
+    }
+
+    response = cffi_requests.get(
+        test_url,
+        proxies=proxies_dict,
+        timeout=3,
+        impersonate="chrome110"
+    )
+
+    elapsed_time = time.time() - start_time
+    if response.status_code == 200:
+        ip_info = response.json()
+        return {
+            "success": True,
+            "ip": ip_info.get("ip", ""),
+            "response_time": round(elapsed_time * 1000),
+            "message": f"代理连接成功，出口 IP: {ip_info.get('ip', 'unknown')}"
+        }
+
+    return {
+        "success": False,
+        "message": f"状态码: {response.status_code}"
+    }
+
+
+def _auto_disable_proxy_on_failure(db, proxy, message: str) -> dict:
+    """代理测试失败时自动禁用，并返回统一提示。"""
+    auto_disabled = False
+    if proxy.enabled:
+        crud.update_proxy(db, proxy.id, enabled=False)
+        auto_disabled = True
+
+    final_message = message
+    if auto_disabled:
+        final_message = f"{message}，已自动禁用"
+
+    return {
+        "success": False,
+        "auto_disabled": auto_disabled,
+        "message": final_message,
+    }
 
 @router.get("/proxies")
 async def get_proxies_list(enabled: Optional[bool] = None):

static/js/settings.js

@@ -31,6 +31,7 @@ const elements = {
     proxiesTable: document.getElementById('proxies-table'),
     addProxyBtn: document.getElementById('add-proxy-btn'),
     testAllProxiesBtn: document.getElementById('test-all-proxies-btn'),
+    deleteDisabledProxiesBtn: document.getElementById('delete-disabled-proxies-btn'),
     addProxyModal: document.getElementById('add-proxy-modal'),
     proxyItemForm: document.getElementById('proxy-item-form'),
     closeProxyModal: document.getElementById('close-proxy-modal'),

templates/settings.html

@@ -95,6 +95,7 @@
                         <h3>代理列表</h3>
                         <div style="display: flex; gap: var(--spacing-sm);">
                             <button class="btn btn-secondary btn-sm" id="test-all-proxies-btn">🔌 测试全部</button>
+                            <button class="btn btn-danger btn-sm" id="delete-disabled-proxies-btn" disabled>🧹 删除禁用项</button>
                             <button class="btn btn-primary btn-sm" id="add-proxy-btn">➕ 添加代理</button>
                         </div>
                     </div>
@@ -115,7 +116,7 @@
                                 </thead>
                                 <tbody id="proxies-table">
                                     <tr>
-                                        <td colspan="7">
+                                        <td colspan="8">
                                             <div class="empty-state">
                                                 <div class="empty-state-icon">🌐</div>
                                                 <div class="empty-state-title">暂无代理</div>