feat: 重构工具配置为通用模型，增加使用统计

- ToolConfig 模型：支持多种工具类型（搜索、计算器、代码执行等）
- ToolUsageLog 模型：记录工具调用日志
- 工具使用统计：调用次数、成功率、错误记录
- 后台管理界面：工具列表+统计展示
- API 重构：/api/v2/tools（替代 search-tools）

templates/admin_v2/index.html

@@ -42,7 +42,7 @@
             <div class="nav-item active" data-page="llm-providers"><i class="ri-cloud-line"></i> 大模型池</div>
             <div class="nav-item" data-page="agents"><i class="ri-robot-2-line"></i> Agent管理</div>
             <div class="nav-item" data-page="channels"><i class="ri-chat-3-line"></i> 渠道管理</div>
-            <div class="nav-item" data-page="search-tools"><i class="ri-search-line"></i> 搜索工具</div>
+            <div class="nav-item" data-page="tools"><i class="ri-tools-line"></i> 工具管理</div>
             <div class="nav-item" data-page="stats"><i class="ri-bar-chart-box-line"></i> 统计数据</div>
         </div>
     </div>
@@ -110,19 +110,29 @@
             </div>
         </div>
 
-        <!-- 搜索工具 -->
-        <div class="page-section" id="page-search-tools">
-            <div class="page-header"><h2><i class="ri-search-line"></i> 搜索工具配置</h2></div>
-            <div class="card">
-                <div class="card-header d-flex justify-content-between">
-                    <span>搜索工具列表（Tavily、Google等）</span>
-                    <button class="btn btn-primary btn-sm" onclick="showAddSearchToolModal()"><i class="ri-add-line"></i> 添加</button>
+        <!-- 工具管理 -->
+        <div class="page-section" id="page-tools">
+            <div class="page-header"><h2><i class="ri-tools-line"></i> 工具管理</h2></div>
+            <div class="row">
+                <div class="col-md-8">
+                    <div class="card">
+                        <div class="card-header d-flex justify-content-between">
+                            <span>工具列表（搜索、计算器、代码执行等）</span>
+                            <button class="btn btn-primary btn-sm" onclick="showAddToolModal()"><i class="ri-add-line"></i> 添加工具</button>
+                        </div>
+                        <div class="card-body">
+                            <table class="table">
+                                <thead><tr><th>名称</th><th>类型</th><th>提供商</th><th>调用次数</th><th>成功率</th><th>默认</th><th>状态</th><th>操作</th></tr></thead>
+                                <tbody id="tools-list"><tr><td colspan="8" class="text-center">加载中...</td></tr></tbody>
+                            </table>
+                        </div>
+                    </div>
                 </div>
-                <div class="card-body">
-                    <table class="table">
-                        <thead><tr><th>名称</th><th>提供商</th><th>API Key</th><th>最大结果</th><th>默认</th><th>状态</th><th>操作</th></tr></thead>
-                        <tbody id="search-tools-list"><tr><td colspan="7" class="text-center">加载中...</td></tr></tbody>
-                    </table>
+                <div class="col-md-4">
+                    <div class="card">
+                        <div class="card-header"><i class="ri-bar-chart-line"></i> 工具使用统计（近7天）</div>
+                        <div class="card-body" id="tool-stats">加载中...</div>
+                    </div>
                 </div>
             </div>
         </div>
@@ -200,20 +210,41 @@
         <div class="modal-footer"><button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button><button type="button" class="btn btn-primary" onclick="saveMatrixConfig()">保存</button></div>
     </div></div></div>
 
-    <!-- Search Tool Modal -->
-    <div class="modal fade" id="searchToolModal"><div class="modal-dialog"><div class="modal-content">
-        <div class="modal-header"><h5 class="modal-title">添加/编辑搜索工具</h5><button type="button" class="btn-close" data-bs-dismiss="modal"></button></div>
-        <div class="modal-body"><form id="search-tool-form">
-            <input type="hidden" id="search-tool-id">
-            <div class="mb-3"><label class="form-label">名称</label><input type="text" class="form-control" id="search-tool-name" value="Tavily Search"></div>
-            <div class="mb-3"><label class="form-label">提供商</label><select class="form-select" id="search-tool-provider"><option value="tavily">Tavily</option><option value="google">Google</option><option value="bing">Bing</option></select></div>
-            <div class="mb-3"><label class="form-label">API Key *</label><input type="text" class="form-control" id="search-tool-api-key" required></div>
-            <div class="mb-3"><label class="form-label">API地址（可选）</label><input type="text" class="form-control" id="search-tool-api-base"></div>
-            <div class="row"><div class="col-md-6"><label class="form-label">最大结果数</label><input type="number" class="form-control" id="search-tool-max-results" value="5"></div><div class="col-md-6"><label class="form-label">搜索深度</label><select class="form-select" id="search-tool-depth"><option value="basic">Basic</option><option value="advanced">Advanced</option></select></div></div>
-            <div class="mt-3 form-check"><input type="checkbox" class="form-check-input" id="search-tool-active" checked><label class="form-check-label">启用</label></div>
-            <div class="mt-2 form-check"><input type="checkbox" class="form-check-input" id="search-tool-default"><label class="form-check-label">设为默认</label></div>
+    <!-- Tool Modal -->
+    <div class="modal fade" id="toolModal"><div class="modal-dialog modal-lg"><div class="modal-content">
+        <div class="modal-header"><h5 class="modal-title">添加/编辑工具</h5><button type="button" class="btn-close" data-bs-dismiss="modal"></button></div>
+        <div class="modal-body"><form id="tool-form">
+            <input type="hidden" id="tool-id">
+            <div class="row">
+                <div class="col-md-6"><label class="form-label">名称 *</label><input type="text" class="form-control" id="tool-name" required></div>
+                <div class="col-md-6"><label class="form-label">类型 *</label><select class="form-select" id="tool-type" onchange="updateToolForm()">
+                    <option value="search">搜索工具</option>
+                    <option value="calculator">计算器</option>
+                    <option value="code_runner">代码执行</option>
+                    <option value="image_gen">图像生成</option>
+                    <option value="translator">翻译</option>
+                    <option value="weather">天气查询</option>
+                    <option value="custom">自定义</option>
+                </select></div>
+            </div>
+            <div class="row mt-3">
+                <div class="col-md-6"><label class="form-label">提供商</label><select class="form-select" id="tool-provider">
+                    <option value="">无</option>
+                    <option value="tavily">Tavily</option>
+                    <option value="google">Google</option>
+                    <option value="bing">Bing</option>
+                    <option value="wolfram">Wolfram</option>
+                    <option value="openai">OpenAI</option>
+                    <option value="anthropic">Anthropic</option>
+                    <option value="custom">自定义</option>
+                </select></div>
+                <div class="col-md-6"><label class="form-label">API Key</label><input type="text" class="form-control" id="tool-api-key"></div>
+            </div>
+            <div class="mt-3"><label class="form-label">配置参数（JSON格式）</label><textarea class="form-control" id="tool-config" rows="3">{"max_results": 5, "search_depth": "basic"}</textarea></div>
+            <div class="mt-3 form-check"><input type="checkbox" class="form-check-input" id="tool-active" checked><label class="form-check-label">启用</label></div>
+            <div class="mt-2 form-check"><input type="checkbox" class="form-check-input" id="tool-default"><label class="form-check-label">设为该类型默认</label></div>
         </form></div>
-        <div class="modal-footer"><button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button><button type="button" class="btn btn-primary" onclick="saveSearchTool()">保存</button></div>
+        <div class="modal-footer"><button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button><button type="button" class="btn btn-primary" onclick="saveTool()">保存</button></div>
     </div></div></div>
 
     <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
@@ -226,7 +257,7 @@
             if (page === 'llm-providers') loadProviders();
             if (page === 'agents') loadAgents();
             if (page === 'channels') loadChannels();
-            if (page === 'search-tools') loadSearchTools();
+            if (page === 'tools') loadTools();
             if (page === 'stats') loadStats();
         }
 
@@ -527,96 +558,172 @@
             document.getElementById('stat-agents').textContent = (agentsData.agents || []).length;
         }
 
-        // ===== 搜索工具 =====
-        async function loadSearchTools() {
-            const res = await fetch('/api/v2/search-tools');
+        // ===== 工具管理 =====
+        async function loadTools() {
+            const res = await fetch('/api/v2/tools');
             const data = await res.json();
-            const tools = data.configs || [];
-            const tbody = document.getElementById('search-tools-list');
+            const tools = data.tools || [];
+            const tbody = document.getElementById('tools-list');
             if (tools.length === 0) {
-                tbody.innerHTML = '<tr><td colspan="7" class="text-center text-muted">暂无配置，点击添加按钮创建</td></tr>';
+                tbody.innerHTML = '<tr><td colspan="8" class="text-center text-muted">暂无工具，点击添加按钮创建</td></tr>';
+            } else {
+                tbody.innerHTML = tools.map(t => {
+                    const successRate = t.total_calls > 0 ? Math.round(t.success_calls / t.total_calls * 100) : 0;
+                    return `
+                        <tr>
+                            <td>${t.name}</td>
+                            <td><span class="badge bg-info">${t.tool_type}</span></td>
+                            <td>${t.provider || '-'}</td>
+                            <td>${t.total_calls}</td>
+                            <td><span class="badge ${successRate >= 90 ? 'bg-success' : successRate >= 70 ? 'bg-warning' : 'bg-danger'}">${successRate}%</span></td>
+                            <td>${t.is_default ? '<i class="ri-check-line text-success"></i>' : ''}</td>
+                            <td>${t.is_active ? '<span class="badge bg-success">启用</span>' : '<span class="badge bg-secondary">禁用</span>'}</td>
+                            <td>
+                                <button class="btn btn-sm btn-outline-primary" onclick="editTool(${t.id})"><i class="ri-edit-line"></i></button>
+                                <button class="btn btn-sm btn-outline-danger" onclick="deleteTool(${t.id})"><i class="ri-delete-bin-line"></i></button>
+                            </td>
+                        </tr>
+                    `;
+                }).join('');
+            }
+            
+            // 加载统计
+            loadToolStats();
+        }
+
+        async function loadToolStats() {
+            const res = await fetch('/api/v2/tools/stats?days=7');
+            const stats = await res.json();
+            const container = document.getElementById('tool-stats');
+            
+            if (stats.total_calls === 0) {
+                container.innerHTML = '<p class="text-muted">暂无使用记录</p>';
                 return;
             }
-            tbody.innerHTML = tools.map(t => `
-                <tr>
-                    <td>${t.name}</td>
-                    <td>${t.provider}</td>
-                    <td><small class="text-muted">${t.api_key ? t.api_key.substring(0, 10) + '...' : '-'}</small></td>
-                    <td>${t.max_results}</td>
-                    <td>${t.is_default ? '<i class="ri-check-line text-success"></i>' : ''}</td>
-                    <td>${t.is_active ? '<span class="badge bg-success">启用</span>' : '<span class="badge bg-secondary">禁用</span>'}</td>
-                    <td>
-                        <button class="btn btn-sm btn-outline-primary" onclick="editSearchTool(${t.id})"><i class="ri-edit-line"></i></button>
-                        <button class="btn btn-sm btn-outline-danger" onclick="deleteSearchTool(${t.id})"><i class="ri-delete-bin-line"></i></button>
-                    </td>
-                </tr>
-            `).join('');
+            
+            let html = `<p><strong>总调用:</strong> ${stats.total_calls} 次</p>`;
+            html += `<p><strong>成功率:</strong> ${Math.round(stats.success_rate)}%</p>`;
+            
+            if (stats.by_type) {
+                html += '<hr><h6>按类型:</h6>';
+                for (const [type, data] of Object.entries(stats.by_type)) {
+                    html += `<p><span class="badge bg-info">${type}</span> ${data.total}次 (成功${data.success})</p>`;
+                }
+            }
+            
+            if (stats.recent_errors && stats.recent_errors.length > 0) {
+                html += '<hr><h6>最近错误:</h6>';
+                stats.recent_errors.slice(0, 3).forEach(e => {
+                    html += `<p class="text-danger small">${e.tool}: ${e.error}</p>`;
+                });
+            }
+            
+            container.innerHTML = html;
         }
 
-        function showAddSearchToolModal() {
-            document.getElementById('search-tool-id').value = '';
-            document.getElementById('search-tool-name').value = 'Tavily Search';
-            document.getElementById('search-tool-provider').value = 'tavily';
-            document.getElementById('search-tool-api-key').value = '';
-            document.getElementById('search-tool-api-base').value = '';
-            document.getElementById('search-tool-max-results').value = 5;
-            document.getElementById('search-tool-depth').value = 'basic';
-            document.getElementById('search-tool-active').checked = true;
-            document.getElementById('search-tool-default').checked = false;
-            new bootstrap.Modal(document.getElementById('searchToolModal')).show();
+        function showAddToolModal() {
+            document.getElementById('tool-id').value = '';
+            document.getElementById('tool-name').value = '';
+            document.getElementById('tool-type').value = 'search';
+            document.getElementById('tool-provider').value = 'tavily';
+            document.getElementById('tool-api-key').value = '';
+            document.getElementById('tool-config').value = '{"max_results": 5, "search_depth": "basic"}';
+            document.getElementById('tool-active').checked = true;
+            document.getElementById('tool-default').checked = false;
+            updateToolForm();
+            new bootstrap.Modal(document.getElementById('toolModal')).show();
         }
 
-        async function editSearchTool(id) {
-            const res = await fetch('/api/v2/search-tools');
-            const data = await res.json();
-            const tool = (data.configs || []).find(t => t.id === id);
-            if (!tool) return;
-            document.getElementById('search-tool-id').value = tool.id;
-            document.getElementById('search-tool-name').value = tool.name;
-            document.getElementById('search-tool-provider').value = tool.provider;
-            document.getElementById('search-tool-api-key').value = tool.api_key || '';
-            document.getElementById('search-tool-api-base').value = tool.api_base || '';
-            document.getElementById('search-tool-max-results').value = tool.max_results;
-            document.getElementById('search-tool-depth').value = tool.search_depth;
-            document.getElementById('search-tool-active').checked = tool.is_active;
-            document.getElementById('search-tool-default').checked = tool.is_default;
-            new bootstrap.Modal(document.getElementById('searchToolModal')).show();
-        }
-
-        async function saveSearchTool() {
-            const id = document.getElementById('search-tool-id').value;
-            const data = {
-                name: document.getElementById('search-tool-name').value,
-                provider: document.getElementById('search-tool-provider').value,
-                api_key: document.getElementById('search-tool-api-key').value,
-                api_base: document.getElementById('search-tool-api-base').value,
-                max_results: parseInt(document.getElementById('search-tool-max-results').value),
-                search_depth: document.getElementById('search-tool-depth').value,
-                is_active: document.getElementById('search-tool-active').checked,
-                is_default: document.getElementById('search-tool-default').checked
+        function updateToolForm() {
+            const type = document.getElementById('tool-type').value;
+            const providerSelect = document.getElementById('tool-provider');
+            const configTextarea = document.getElementById('tool-config');
+            
+            // 根据类型设置默认配置
+            const defaults = {
+                'search': { provider: 'tavily', config: '{"api_key": "", "max_results": 5, "search_depth": "basic"}' },
+                'calculator': { provider: 'wolfram', config: '{"api_key": ""}' },
+                'code_runner': { provider: '', config: '{"timeout": 30, "language": "python"}' },
+                'image_gen': { provider: 'openai', config: '{"api_key": "", "model": "dall-e-3"}' },
+                'translator': { provider: '', config: '{"source": "auto", "target": "zh"}' },
+                'weather': { provider: '', config: '{"api_key": ""}' },
+                'custom': { provider: '', config: '{}' }
             };
+            
+            const def = defaults[type] || defaults['custom'];
+            providerSelect.value = def.provider;
+            configTextarea.value = def.config;
+        }
+
+        async function editTool(id) {
+            const res = await fetch('/api/v2/tools');
+            const data = await res.json();
+            const tool = (data.tools || []).find(t => t.id === id);
+            if (!tool) return;
+            
+            document.getElementById('tool-id').value = tool.id;
+            document.getElementById('tool-name').value = tool.name;
+            document.getElementById('tool-type').value = tool.tool_type;
+            document.getElementById('tool-provider').value = tool.provider || '';
+            document.getElementById('tool-config').value = JSON.stringify(tool.config || {});
+            document.getElementById('tool-active').checked = tool.is_active;
+            document.getElementById('tool-default').checked = tool.is_default;
+            
+            // 提取 API Key
+            const apiKey = tool.config?.api_key || '';
+            document.getElementById('tool-api-key').value = apiKey;
+            
+            new bootstrap.Modal(document.getElementById('toolModal')).show();
+        }
+
+        async function saveTool() {
+            const id = document.getElementById('tool-id').value;
+            
+            // 解析配置 JSON
+            let config = {};
+            try {
+                config = JSON.parse(document.getElementById('tool-config').value);
+            } catch (e) {
+                alert('配置 JSON 格式错误');
+                return;
+            }
+            
+            // 添加 API Key 到配置
+            const apiKey = document.getElementById('tool-api-key').value;
+            if (apiKey) config.api_key = apiKey;
+            
+            const data = {
+                name: document.getElementById('tool-name').value,
+                tool_type: document.getElementById('tool-type').value,
+                provider: document.getElementById('tool-provider').value,
+                config: config,
+                is_active: document.getElementById('tool-active').checked,
+                is_default: document.getElementById('tool-default').checked
+            };
+            
             let res;
             if (id) {
-                res = await fetch(`/api/v2/search-tools/${id}`, { method: 'PUT', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(data) });
+                res = await fetch(`/api/v2/tools/${id}`, { method: 'PUT', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(data) });
             } else {
-                res = await fetch('/api/v2/search-tools', { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(data) });
+                res = await fetch('/api/v2/tools', { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify(data) });
             }
+            
             const result = await res.json();
             if (result.success) {
-                bootstrap.Modal.getInstance(document.getElementById('searchToolModal')).hide();
-                loadSearchTools();
+                bootstrap.Modal.getInstance(document.getElementById('toolModal')).hide();
+                loadTools();
                 alert('保存成功');
             } else {
                 alert('保存失败: ' + result.message);
             }
         }
 
-        async function deleteSearchTool(id) {
-            if (!confirm('确定删除此搜索工具配置？')) return;
-            const res = await fetch(`/api/v2/search-tools/${id}`, { method: 'DELETE' });
+        async function deleteTool(id) {
+            if (!confirm('确定删除此工具配置？')) return;
+            const res = await fetch(`/api/v2/tools/${id}`, { method: 'DELETE' });
             const result = await res.json();
             if (result.success) {
-                loadSearchTools();
+                loadTools();
                 alert('删除成功');
             } else {
                 alert('删除失败');