diff --git a/.env.example b/.env.example
deleted file mode 100644
index 43869b5..0000000
--- a/.env.example
+++ /dev/null
@@ -1,6 +0,0 @@
-# 本项目的运行参数已改为由 JSON 配置文件提供，不再使用环境变量。
-#
-# 后端：编辑项目根目录下的 config/app.json
-# 前端 dev/build：编辑项目根目录下的 config/webui.json（与 WebUI 同级的 config 目录）
-#
-# 测试专用配置：config/app.test.json（pytest 会自动选用，勿与生产库共用 db_path）
diff --git a/DESIGN.md b/DESIGN.md
deleted file mode 100644
index 84b08f6..0000000
--- a/DESIGN.md
+++ /dev/null
@@ -1,480 +0,0 @@
-# ProxyPool 架构重构设计文档
-
-> 目标：建立一个高度可扩展、分层清晰、易于维护的代理池系统。最关键的目标是**让添加新爬虫变得极其简单**。
-
----
-
-## 1. 架构总览
-
-采用经典的分层架构：
-
-```
-┌─────────────────────────────────────────┐
-│  Frontend (Vue3 + Vite + Element Plus)  │
-└─────────────┬───────────────────────────┘
-              │ HTTP/REST
-┌─────────────▼───────────────────────────┐
-│  API Layer (FastAPI Routers)            │  ← 只负责：校验输入、调用 Service、格式化输出
-├─────────────────────────────────────────┤
-│  Service Layer                          │  ← 业务逻辑编排：爬取策略、验证调度、导出逻辑
-├─────────────────────────────────────────┤
-│  Plugin System (Crawlers)               │  ← 爬虫插件：实现统一接口，返回原始代理数据
-├─────────────────────────────────────────┤
-│  Task Queue & Workers                   │  ← 验证队列：背压控制、Worker 池、削峰填谷
-├─────────────────────────────────────────┤
-│  Repository Layer                       │  ← 数据访问：所有 SQL 收敛于此
-├─────────────────────────────────────────┤
-│  Infrastructure (DB / Config / Log)     │  ← 基础设施：连接池、配置、日志
-└─────────────────────────────────────────┘
-```
-
----
-
-## 2. 后端核心设计原则
-
-### 2.1 消灭全局单例，全面使用依赖注入 (DI)
-当前 `scheduler = ValidationScheduler()` 是模块级全局变量，导致测试困难、隐式依赖。
-
-重构后：
-- 所有核心组件（DB、Scheduler、PluginManager）都通过 FastAPI `Depends` 注入
-- 使用 `contextlib.asynccontextmanager` 在 lifespan 中初始化并挂载到 `app.state`
-- 单元测试可以轻易 mock 任何一层
-
-### 2.2 Repository 模式收敛所有 SQL
-所有数据库操作从 `api_server.py`、`scheduler.py` 中彻底抽离到 `repositories/proxy_repo.py`。
-
-好处：
-- 换数据库时只改 Repository
-- 写单元测试直接 mock Repository
-- SQL 语句集中管理，防止散落在各处
-
-### 2.3 任务队列解耦爬取与验证
-当前插件爬取后直接 `asyncio.gather(*10000_tasks)` 验证，存在内存和并发风险。
-
-重构后引入轻量级内存队列：
-- `ValidationQueue`：基于 `asyncio.Queue`
-- `ValidationWorkerPool`：固定数量的 Worker 从队列消费
-- 爬取结果 `put` 进队列即返回，验证在后台进行
-- 天然支持背压（backpressure），防止内存爆炸
-
----
-
-## 3. 插件系统设计（核心）
-
-### 3.1 设计目标
-**让添加一个新爬虫只需要做两件事：**
-1. 创建一个类，继承 `BaseCrawlerPlugin`
-2. 实现 `crawl()` 方法，返回 `list[ProxyRaw]`
-
-### 3.2 插件接口
-
-```python
-from dataclasses import dataclass
-from typing import List, AsyncIterator
-
-@dataclass
-class ProxyRaw:
-    ip: str
-    port: int
-    protocol: str  # http | https | socks4 | socks5
-
-class BaseCrawlerPlugin:
-    """所有爬虫插件必须继承的基类"""
-    
-    name: str = ""           # 插件唯一标识
-    display_name: str = ""   # 展示名称
-    description: str = ""    # 描述
-    enabled: bool = True     # 是否默认启用
-    
-    async def crawl(self) -> List[ProxyRaw]:
-        """
-        爬取代理的核心方法。
-        可以是纯同步逻辑，也可以包含异步 HTTP 请求。
-        返回原始代理列表，不要在这里做验证。
-        """
-        raise NotImplementedError
-    
-    async def health_check(self) -> bool:
-        """可选：检查当前插件是否可用（如目标网站是否可访问）"""
-        return True
-```
-
-### 3.3 插件注册机制
-采用**显式注册 + 装饰器**模式，抛弃运行时目录扫描。
-
-```python
-from core.plugin_system import registry
-
-@registry.register
-class MyNewPlugin(BaseCrawlerPlugin):
-    name = "my_new_plugin"
-    display_name = "我的新代理源"
-    
-    async def crawl(self):
-        return [ProxyRaw("1.2.3.4", 8080, "http")]
-```
-
-优点：
-- 类型安全：IDE 可以自动补全、静态检查
-- 可控：不会出现意外加载未预期模块的问题
-- 测试友好：测试时只注册 mock 插件
-
-同时提供一个兼容入口 `registry.auto_discover("plugins")`，用于兼容现有习惯。
-
-### 3.4 插件元数据持久化
-插件的 `enabled` 状态应该持久化到数据库（或 settings JSON），而不是仅存在于内存。
-
-新增 `plugin_settings` 表：
-```sql
-CREATE TABLE plugin_settings (
-    plugin_id TEXT PRIMARY KEY,
-    enabled INTEGER DEFAULT 1,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
-```
-
-启动时：
-1. 加载所有已注册插件
-2. 从 `plugin_settings` 读取持久化状态
-3. 合并到插件实例中
-
----
-
-## 4. 任务调度与验证队列
-
-### 4.1 验证队列设计
-
-```python
-class ValidationQueue:
-    def __init__(self, worker_count: int = 50):
-        self.queue: asyncio.Queue[ProxyRaw] = asyncio.Queue()
-        self.worker_count = worker_count
-        self.workers: list[asyncio.Task] = []
-        self._running = False
-    
-    async def start(self):
-        self._running = True
-        for _ in range(self.worker_count):
-            self.workers.append(asyncio.create_task(self._worker_loop()))
-    
-    async def stop(self):
-        self._running = False
-        for _ in self.workers:
-            self.queue.put_nowait(None)  # sentinel
-        await asyncio.gather(*self.workers, return_exceptions=True)
-    
-    async def submit(self, proxies: list[ProxyRaw]):
-        for p in proxies:
-            await self.queue.put(p)
-    
-    async def _worker_loop(self):
-        while True:
-            item = await self.queue.get()
-            if item is None:
-                break
-            await self._validate_and_save(item)
-            self.queue.task_done()
-```
-
-### 4.2 调度器设计
-`SchedulerService` 负责：
-- 启动/停止验证队列
-- 定时从数据库拉取存量代理，重新投入验证队列
-- 协调插件爬取后的验证流程
-
-```python
-class SchedulerService:
-    def __init__(self, queue: ValidationQueue, proxy_repo: ProxyRepository):
-        self.queue = queue
-        self.proxy_repo = proxy_repo
-        self.interval_minutes = 30
-        self._task: asyncio.Task | None = None
-```
-
----
-
-## 5. 数据库设计
-
-保留 SQLite + aiosqlite，但优化连接管理。
-
-### 5.1 表结构
-
-```sql
--- 代理表
-CREATE TABLE proxies (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    ip TEXT NOT NULL,
-    port INTEGER NOT NULL,
-    protocol TEXT DEFAULT 'http',
-    score INTEGER DEFAULT 10,
-    response_time_ms REAL,
-    last_check TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    UNIQUE(ip, port)
-);
-
--- 插件设置表
-CREATE TABLE plugin_settings (
-    plugin_id TEXT PRIMARY KEY,
-    enabled INTEGER DEFAULT 1,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
-
--- 系统设置表（JSON 存储）
-CREATE TABLE settings (
-    key TEXT PRIMARY KEY,
-    value TEXT NOT NULL,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-);
-```
-
-### 5.2 连接管理
-- 使用 `asynccontextmanager` 管理连接生命周期
-- 每个 HTTP 请求独立获取连接，请求结束后关闭
-- 调度器/队列等长生命周期组件也定期重建连接（如每 1000 次操作）
-
----
-
-## 6. API 设计调整
-
-保持现有 API 路径基本不变，但路由按资源拆分。
-
-### 6.1 路由拆分
-```
-apiv1/
-├── __init__.py
-├── proxies.py      # /api/proxies/*
-├── plugins.py      # /api/plugins/*
-├── scheduler.py    # /api/scheduler/*
-└── settings.py     # /api/settings
-```
-
-### 6.2 新增/调整的 API
-
-#### 插件相关
-- `GET /api/plugins` — 获取插件列表（含持久化状态）
-- `PUT /api/plugins/{plugin_id}/toggle` — 切换启用状态（持久化到 DB）
-- `POST /api/plugins/{plugin_id}/crawl` — 触发爬取（异步，返回任务 ID）
-- `POST /api/plugins/crawl-all` — 批量爬取
-
-**关键变更**：爬取接口改为**异步触发**而不是同步等待。因为新爬虫可能爬取数万个代理，同步 HTTP 请求会超时。
-
-返回示例：
-```json
-{
-  "code": 200,
-  "message": "爬取任务已启动",
-  "data": {
-    "task_id": "crawl-20250402-001",
-    "queued": 150
-  }
-}
-```
-
-为了简化前端，第一阶段可以保留同步 API，但内部通过 `asyncio.create_task` 包装，并设置合理的超时（30 秒）。在真正大规模使用时，再迁移到 WebSocket/SSE 推送进度。
-
----
-
-## 7. 前端架构调整
-
-### 7.1 新增 Service 层
-从 Store 中剥离 API 调用逻辑：
-
-```
-frontend/src/
-├── services/
-│   ├── proxyService.js    # 代理相关 API 调用
-│   ├── pluginService.js   # 插件相关 API 调用
-│   ├── schedulerService.js
-│   └── settingService.js
-├── stores/
-│   ├── proxy.js           # 纯状态管理
-│   └── plugin.js
-```
-
-### 7.2 Store 职责收敛
-Store 只负责：
-- 持有状态（`ref/reactive`）
-- 提供计算属性
-- 调用 Service，然后更新状态
-
-### 7.3 API 适配
-由于后端 API 路径保持不变，前端改动主要是代码组织上的调整，URL 和返回结构尽量兼容。
-
----
-
-## 8. 目录结构（重构后）
-
-```
-ProxyPool/
-├── main.py                       # 项目入口
-├── requirements.txt              # Python 依赖
-├── .env.example                  # 环境变量示例
-│
-├── app/                          # 后端代码
-│   ├── api/                      # FastAPI 入口和路由
-│   │   ├── __init__.py
-│   │   ├── main.py               # 应用工厂
-│   │   ├── lifespan.py           # 生命周期管理
-│   │   ├── deps.py               # 依赖注入
-│   │   ├── errors.py             # 统一异常
-│   │   └── routes/
-│   │       ├── __init__.py
-│   │       ├── proxies.py
-│   │       ├── plugins.py
-│   │       ├── scheduler.py
-│   │       └── settings.py
-│   │
-│   ├── core/                     # 基础设施
-│   │   ├── __init__.py
-│   │   ├── config.py             # Pydantic Settings
-│   │   ├── log.py                # 日志
-│   │   ├── db.py                 # 数据库连接池/上下文
-│   │   ├── exceptions.py         # 业务异常
-│   │   ├── plugin_system/        # 插件系统
-│   │   │   ├── __init__.py
-│   │   │   ├── base.py           # BaseCrawlerPlugin
-│   │   │   └── registry.py       # 插件注册中心
-│   │   └── tasks/                # 任务队列
-│   │       ├── __init__.py
-│   │       └── queue.py          # ValidationQueue
-│   │
-│   ├── models/                   # 数据模型
-│   │   ├── __init__.py
-│   │   ├── schemas.py            # Pydantic 模型
-│   │   └── domain.py             # 领域模型
-│   │
-│   ├── repositories/             # 数据访问层
-│   │   ├── __init__.py
-│   │   ├── proxy_repo.py
-│   │   ├── settings_repo.py
-│   │   └── task_repo.py
-│   │
-│   ├── services/                 # 业务逻辑层
-│   │   ├── __init__.py
-│   │   ├── proxy_service.py
-│   │   ├── plugin_service.py
-│   │   ├── scheduler_service.py
-│   │   └── validator_service.py
-│   │
-│   └── plugins/                  # 爬虫插件
-│       ├── __init__.py
-│       ├── base.py               # 通用抓取基类
-│       ├── fate0.py
-│       ├── kuaidaili.py
-│       ├── ip3366.py
-│       ├── ip89.py
-│       ├── speedx.py
-│       ├── yundaili.py
-│       ├── proxylist_download.py
-│       └── proxyscrape.py
-│
-├── WebUI/                        # Vue3 前端
-│   ├── src/
-│   │   ├── api/                  # API 封装
-│   │   ├── stores/               # Pinia 状态管理
-│   │   ├── views/                # 页面组件
-│   │   ├── router/               # 路由配置
-│   │   ├── components/           # 通用组件
-│   │   └── style.css             # 全局样式
-│   ├── index.html
-│   └── package.json
-│
-├── tests/                        # 测试目录
-│   ├── conftest.py
-│   ├── unit/
-│   └── integration/
-│
-├── script/                       # 启动脚本
-├── db/                           # 数据存储
-├── logs/                         # 日志文件
-└── DESIGN.md                     # 本文档
-```
-
----
-
-## 9. 迁移计划
-
-### Phase 1: 基础设施（今天完成）
-1. 重写 `core/config.py` → Pydantic Settings
-2. 重写 `core/db.py` → 带上下文管理的连接池
-3. 创建 `models/` 层
-
-### Phase 2: Repository + Service（今天完成）
-1. 创建 `repositories/proxy_repo.py`
-2. 创建 `services/` 下的业务类
-3. 迁移现有逻辑
-
-### Phase 3: 插件系统（今天完成，核心）
-1. 创建 `core/plugin_system/base.py` 和 `registry.py`
-2. 设计显式注册机制
-3. 将所有现有插件迁移到新基类
-
-### Phase 4: 任务队列（今天完成）
-1. 创建 `ValidationQueue` 和 `WorkerPool`
-2. 重写 `SchedulerService`
-
-### Phase 5: API 路由（今天完成）
-1. 拆分 `api_server.py` 到 `api/routes/`
-2. 组装新的 `api/main.py`
-
-### Phase 6: 前端调整（今天完成）
-1. 拆分 Service 层
-2. 适配 Store
-3. 保留现有页面，只改代码组织
-
-### Phase 7: 清理与验证
-1. 删除旧的 `api_server.py`, `core/scheduler.py`, `core/sqlite.py` 等
-2. 运行测试，确保所有功能正常
-3. 提交代码
-
----
-
-## 10. 添加新爬虫的标准流程（目标体验）
-
-假设要添加一个名为 `mynewsource` 的爬虫：
-
-**Step 1**: 创建文件 `app/plugins/mynewsource.py`
-
-```python
-from app.core.plugin_system import BaseCrawlerPlugin, ProxyRaw
-from app.plugins.base import BaseHTTPPlugin  # 可选：如果基于 HTTP 爬取
-
-class MyNewSourcePlugin(BaseHTTPPlugin):
-    name = "mynewsource"
-    display_name = "我的新代理源"
-    description = "从 example.com 爬取免费代理"
-    
-    def __init__(self):
-        super().__init__()
-        self.urls = ["https://example.com/proxies"]
-    
-    async def crawl(self) -> list[ProxyRaw]:
-        results = []
-        for url in self.urls:
-            html = await self.fetch(url)
-            # ... 解析 html ...
-            results.append(ProxyRaw(ip="1.2.3.4", port=8080, protocol="http"))
-        return results
-```
-
-**Step 2**: 在 `app/plugins/__init__.py` 中注册
-
-```python
-from .mynewsource import MyNewSourcePlugin
-from app.core.plugin_system import registry
-
-registry.register(MyNewSourcePlugin)
-```
-
-**Step 3**: 重启后端服务，前端自动显示新插件。
-
-无需修改任何路由、服务、数据库表。
-
----
-
-*文档版本: 1.0*
-*作者: Kimi Code*
-*日期: 2026-04-02*
diff --git a/WebUI/src/components/LatencyHistogram.vue b/WebUI/src/components/LatencyHistogram.vue
new file mode 100644
index 0000000..e8fa957
--- /dev/null
+++ b/WebUI/src/components/LatencyHistogram.vue
@@ -0,0 +1,270 @@
+<template>
+  <el-card class="chart-card" shadow="hover">
+    <template #header>
+      <div class="card-header">
+        <span class="card-title">
+          <el-icon class="header-icon"><Histogram /></el-icon>
+          延迟分布
+        </span>
+        <el-tooltip content="已验证可用代理的响应延迟分布">
+          <el-icon class="help-icon"><InfoFilled /></el-icon>
+        </el-tooltip>
+      </div>
+    </template>
+    <div ref="chartRef" class="chart-container"></div>
+  </el-card>
+</template>
+
+<script setup>
+import { ref, onMounted, onUnmounted, watch } from 'vue'
+import { InfoFilled, Histogram } from '@element-plus/icons-vue'
+import * as echarts from 'echarts'
+import axios from '../api'
+
+const chartRef = ref(null)
+let chartInstance = null
+let resizeTimer = null
+const cachedColors = ref(null)
+
+function loadColors() {
+  if (cachedColors.value) return cachedColors.value
+
+  const getCssVar = (name, fallback) =>
+    getComputedStyle(document.documentElement).getPropertyValue(name).trim() || fallback
+
+  cachedColors.value = {
+    primary: getCssVar('--primary', '#927CFF'),
+    success: getCssVar('--success', '#22C55E'),
+    warning: getCssVar('--warning', '#F59E0B'),
+    info: getCssVar('--info', '#38BDF8'),
+    textPrimary: getCssVar('--text-primary', '#F5F7FA'),
+    textSecondary: getCssVar('--text-secondary', '#A5AEBD'),
+    surface: getCssVar('--surface', '#181C25')
+  }
+  return cachedColors.value
+}
+
+async function fetchData() {
+  try {
+    const res = await axios.get('/api/proxies/latency-distribution')
+    if (res?.data?.ranges) {
+      updateChart(res.data)
+    }
+  } catch (err) {
+    console.error('Failed to fetch latency distribution:', err)
+  }
+}
+
+function updateChart(data) {
+  if (!chartInstance) return
+
+  const colors = cachedColors.value
+  const option = {
+    tooltip: {
+      trigger: 'axis',
+      confine: true,
+      axisPointer: {
+        type: 'shadow'
+      },
+      backgroundColor: 'rgba(24, 28, 37, 0.95)',
+      borderColor: colors.primary,
+      borderWidth: 1,
+      textStyle: {
+        color: colors.textPrimary,
+        fontSize: 13
+      },
+      formatter: (params) => {
+        const item = params[0]
+        return `${item.name}<br/>代理数: <b>${item.value}</b>`
+      }
+    },
+    grid: {
+      left: '3%',
+      right: '4%',
+      bottom: '3%',
+      top: '10%',
+      containLabel: true
+    },
+    xAxis: {
+      type: 'category',
+      data: data.ranges || [],
+      axisLabel: {
+        color: colors.textSecondary,
+        fontSize: 11,
+        rotate: 0
+      },
+      axisLine: {
+        lineStyle: {
+          color: colors.textSecondary
+        }
+      },
+      axisTick: {
+        show: false
+      }
+    },
+    yAxis: {
+      type: 'value',
+      name: '代理数',
+      nameTextStyle: {
+        color: colors.textSecondary,
+        fontSize: 11
+      },
+      axisLabel: {
+        color: colors.textSecondary,
+        fontSize: 11
+      },
+      axisLine: {
+        show: false
+      },
+      axisTick: {
+        show: false
+      },
+      splitLine: {
+        lineStyle: {
+          color: 'rgba(255,255,255,0.1)'
+        }
+      }
+    },
+    series: [
+      {
+        name: '延迟分布',
+        type: 'bar',
+        data: data.counts || [],
+        barWidth: '50%',
+        itemStyle: {
+          color: (params) => {
+            const colorList = [
+              colors.success,
+              colors.info,
+              colors.primary,
+              colors.warning,
+              colors.danger || '#EF4444'
+            ]
+            return colorList[params.dataIndex] || colors.primary
+          },
+          borderRadius: [4, 4, 0, 0]
+        },
+        emphasis: {
+          itemStyle: {
+            shadowBlur: 10,
+            shadowColor: 'rgba(146, 124, 255, 0.3)'
+          }
+        },
+        label: {
+          show: true,
+          position: 'top',
+          color: colors.textSecondary,
+          fontSize: 11,
+          formatter: '{c}'
+        }
+      }
+    ],
+    animation: true,
+    animationDuration: 800,
+    animationEasing: 'cubicOut'
+  }
+
+  chartInstance.setOption(option, true)
+}
+
+function initChart() {
+  if (!chartRef.value) return
+
+  loadColors()
+  if (chartInstance) {
+    fetchData()
+    return
+  }
+
+  chartInstance = echarts.init(chartRef.value)
+  fetchData()
+
+  window.addEventListener('resize', handleResize)
+}
+
+function handleResize() {
+  if (resizeTimer) clearTimeout(resizeTimer)
+  resizeTimer = setTimeout(() => {
+    chartInstance?.resize()
+  }, 200)
+}
+
+function destroyChart() {
+  window.removeEventListener('resize', handleResize)
+  if (resizeTimer) {
+    clearTimeout(resizeTimer)
+    resizeTimer = null
+  }
+  chartInstance?.dispose()
+  chartInstance = null
+}
+
+onMounted(() => {
+  initChart()
+})
+
+onUnmounted(() => {
+  destroyChart()
+})
+
+watch(
+  () => chartInstance,
+  (val) => {
+    if (val) {
+      fetchData()
+    }
+  }
+)
+</script>
+
+<style scoped>
+.chart-card {
+  border-radius: var(--radius-lg);
+  min-height: 420px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  overflow: visible;
+}
+
+.chart-card:hover {
+  border-color: var(--border-light);
+}
+
+.header-icon {
+  margin-right: 8px;
+  color: var(--primary);
+}
+
+.help-icon {
+  color: var(--text-muted);
+  cursor: help;
+  transition: var(--transition-base);
+}
+
+.help-icon:hover {
+  color: var(--primary);
+}
+
+.card-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.card-title {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--text-primary);
+}
+
+.chart-container {
+  height: 360px;
+  overflow: visible;
+}
+</style>
+
+<style>
+.chart-card .el-card__header {
+  border-bottom: none !important;
+}
+</style>
diff --git a/WebUI/src/components/ProtocolChart.vue b/WebUI/src/components/ProtocolChart.vue
index e8c4f17..eb428d0 100644
--- a/WebUI/src/components/ProtocolChart.vue
+++ b/WebUI/src/components/ProtocolChart.vue
@@ -124,6 +124,7 @@ function getChartOption() {
   return {
     tooltip: {
       trigger: 'item',
+      confine: true,
       formatter: (params) => {
         const percent = total.value > 0 ? ((params.value / total.value) * 100).toFixed(1) : 0
         return `${params.name}: ${params.value} (${percent}%)`
@@ -150,7 +151,7 @@ function getChartOption() {
       {
         type: 'pie',
         radius: ['40%', '65%'],
-        center: ['38%', '50%'],
+        center: ['38%', '52%'],
         avoidLabelOverlap: false,
         itemStyle: {
           borderRadius: 6,
@@ -252,17 +253,18 @@ onUnmounted(() => {
 <style scoped>
 .chart-card {
   border-radius: var(--radius-lg);
-  min-height: 400px;
+  min-height: 420px;
   background: var(--surface);
   border: 1px solid var(--border);
+  overflow: visible;
 }
 
 .chart-card--compact {
-  min-height: 340px;
+  min-height: 420px;
 }
 
 .chart-card--compact .chart-container {
-  height: 300px;
+  height: 340px;
 }
 
 .chart-card:hover {
@@ -285,9 +287,16 @@ onUnmounted(() => {
 }
 
 .chart-container {
-  height: 350px;
+  height: 340px;
   display: flex;
   align-items: center;
   justify-content: center;
+  overflow: visible;
+}
+</style>
+
+<style>
+.chart-card .el-card__header {
+  border-bottom: none !important;
 }
 </style>
diff --git a/WebUI/src/components/QuickActions.vue b/WebUI/src/components/QuickActions.vue
deleted file mode 100644
index 8eb3e8a..0000000
--- a/WebUI/src/components/QuickActions.vue
+++ /dev/null
@@ -1,144 +0,0 @@
-<template>
-  <el-card class="actions-card" shadow="hover">
-    <template #header>
-      <div class="card-header">
-        <span class="card-title">
-          <el-icon class="header-icon"><Lightning /></el-icon>
-          快速操作
-        </span>
-      </div>
-    </template>
-    <div class="quick-actions">
-      <button 
-        class="action-btn btn-success"
-        @click="$emit('export')"
-      >
-        <span class="btn-content">
-          <el-icon class="btn-icon"><Download /></el-icon>
-          <span class="btn-text">导出代理</span>
-        </span>
-      </button>
-      
-      <button 
-        class="action-btn btn-warning"
-        @click="$emit('clean')"
-      >
-        <span class="btn-content">
-          <el-icon class="btn-icon"><Delete /></el-icon>
-          <span class="btn-text">清理无效</span>
-        </span>
-      </button>
-    </div>
-  </el-card>
-</template>
-
-<script setup>
-import { Download, Delete, Lightning } from '@element-plus/icons-vue'
-
-defineEmits(['export', 'clean'])
-</script>
-
-<style scoped>
-.actions-card {
-  border-radius: var(--radius-lg);
-  min-height: 400px;
-  background: var(--surface);
-  border: 1px solid var(--border);
-}
-
-.actions-card:hover {
-  border-color: var(--border-light);
-}
-
-.header-icon {
-  margin-right: 8px;
-  color: var(--primary);
-}
-
-.quick-actions {
-  display: grid;
-  grid-template-columns: 1fr;
-  gap: 12px;
-  padding: 16px;
-}
-
-.action-btn {
-  width: 100%;
-  height: 56px;
-  border: none;
-  border-radius: var(--radius-md);
-  font-size: 15px;
-  font-weight: 500;
-  cursor: pointer;
-  transition: all 0.2s ease;
-  display: grid;
-  place-items: center;
-}
-
-.btn-content {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  gap: 8px;
-}
-
-.btn-icon {
-  font-size: 18px;
-  flex-shrink: 0;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-}
-
-.btn-text {
-  display: inline-block;
-  text-align: center;
-  min-width: 64px;
-}
-
-/* 按钮样式 */
-.btn-success {
-  background: var(--success);
-  color: #0F1117;
-}
-
-.btn-success:hover {
-  background: #2DD4BF;
-  transform: translateY(-2px);
-  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
-}
-
-.btn-warning {
-  background: var(--warning);
-  color: #0F1117;
-}
-
-.btn-warning:hover {
-  background: #FBBF24;
-  transform: translateY(-2px);
-  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
-}
-
-@media (max-width: 768px) {
-  .quick-actions {
-    grid-template-columns: repeat(2, 1fr);
-    padding: 12px;
-    gap: 10px;
-  }
-  
-  .action-btn {
-    height: 44px;
-    font-size: 14px;
-  }
-  
-  .btn-text {
-    min-width: auto;
-  }
-}
-
-@media (max-width: 480px) {
-  .quick-actions {
-    grid-template-columns: 1fr;
-  }
-}
-</style>
diff --git a/WebUI/src/components/ScoreDistribution.vue b/WebUI/src/components/ScoreDistribution.vue
new file mode 100644
index 0000000..37b477e
--- /dev/null
+++ b/WebUI/src/components/ScoreDistribution.vue
@@ -0,0 +1,268 @@
+<template>
+  <el-card class="chart-card" shadow="hover">
+    <template #header>
+      <div class="card-header">
+        <span class="card-title">
+          <el-icon class="header-icon"><TrendCharts /></el-icon>
+          评分分布
+        </span>
+        <el-tooltip content="已验证可用代理的质量评分分布">
+          <el-icon class="help-icon"><InfoFilled /></el-icon>
+        </el-tooltip>
+      </div>
+    </template>
+    <div ref="chartRef" class="chart-container"></div>
+  </el-card>
+</template>
+
+<script setup>
+import { ref, onMounted, onUnmounted, watch } from 'vue'
+import { InfoFilled, TrendCharts } from '@element-plus/icons-vue'
+import * as echarts from 'echarts'
+import axios from '../api'
+
+const chartRef = ref(null)
+let chartInstance = null
+let resizeTimer = null
+const cachedColors = ref(null)
+
+function loadColors() {
+  if (cachedColors.value) return cachedColors.value
+
+  const getCssVar = (name, fallback) =>
+    getComputedStyle(document.documentElement).getPropertyValue(name).trim() || fallback
+
+  cachedColors.value = {
+    primary: getCssVar('--primary', '#927CFF'),
+    success: getCssVar('--success', '#22C55E'),
+    warning: getCssVar('--warning', '#F59E0B'),
+    info: getCssVar('--info', '#38BDF8'),
+    textPrimary: getCssVar('--text-primary', '#F5F7FA'),
+    textSecondary: getCssVar('--text-secondary', '#A5AEBD'),
+    surface: getCssVar('--surface', '#181C25')
+  }
+  return cachedColors.value
+}
+
+async function fetchData() {
+  try {
+    const res = await axios.get('/api/proxies/score-distribution')
+    if (res?.data?.ranges) {
+      updateChart(res.data)
+    }
+  } catch (err) {
+    console.error('Failed to fetch score distribution:', err)
+  }
+}
+
+function updateChart(data) {
+  if (!chartInstance) return
+
+  const colors = cachedColors.value
+  const option = {
+    tooltip: {
+      trigger: 'axis',
+      confine: true,
+      axisPointer: {
+        type: 'shadow'
+      },
+      backgroundColor: 'rgba(24, 28, 37, 0.95)',
+      borderColor: colors.primary,
+      borderWidth: 1,
+      textStyle: {
+        color: colors.textPrimary,
+        fontSize: 13
+      },
+      formatter: (params) => {
+        const item = params[0]
+        return `${item.name}<br/>代理数: <b>${item.value}</b>`
+      }
+    },
+    grid: {
+      left: '3%',
+      right: '4%',
+      bottom: '3%',
+      top: '10%',
+      containLabel: true
+    },
+    xAxis: {
+      type: 'category',
+      data: data.ranges || [],
+      axisLabel: {
+        color: colors.textSecondary,
+        fontSize: 11
+      },
+      axisLine: {
+        lineStyle: {
+          color: colors.textSecondary
+        }
+      },
+      axisTick: {
+        show: false
+      }
+    },
+    yAxis: {
+      type: 'value',
+      name: '代理数',
+      nameTextStyle: {
+        color: colors.textSecondary,
+        fontSize: 11
+      },
+      axisLabel: {
+        color: colors.textSecondary,
+        fontSize: 11
+      },
+      axisLine: {
+        show: false
+      },
+      axisTick: {
+        show: false
+      },
+      splitLine: {
+        lineStyle: {
+          color: 'rgba(255,255,255,0.1)'
+        }
+      }
+    },
+    series: [
+      {
+        name: '评分分布',
+        type: 'bar',
+        data: data.counts || [],
+        barWidth: '50%',
+        itemStyle: {
+          color: (params) => {
+            const colorList = [
+              colors.success,
+              colors.primary,
+              colors.info,
+              colors.warning,
+              colors.danger || '#EF4444'
+            ]
+            return colorList[params.dataIndex] || colors.primary
+          },
+          borderRadius: [4, 4, 0, 0]
+        },
+        emphasis: {
+          itemStyle: {
+            shadowBlur: 10,
+            shadowColor: 'rgba(146, 124, 255, 0.3)'
+          }
+        },
+        label: {
+          show: true,
+          position: 'top',
+          color: colors.textSecondary,
+          fontSize: 11,
+          formatter: '{c}'
+        }
+      }
+    ],
+    animation: true,
+    animationDuration: 800,
+    animationEasing: 'cubicOut'
+  }
+
+  chartInstance.setOption(option, true)
+}
+
+function initChart() {
+  if (!chartRef.value) return
+
+  loadColors()
+  if (chartInstance) {
+    return
+  }
+
+  chartInstance = echarts.init(chartRef.value)
+  fetchData()
+
+  window.addEventListener('resize', handleResize)
+}
+
+function handleResize() {
+  if (resizeTimer) clearTimeout(resizeTimer)
+  resizeTimer = setTimeout(() => {
+    chartInstance?.resize()
+  }, 200)
+}
+
+function destroyChart() {
+  window.removeEventListener('resize', handleResize)
+  if (resizeTimer) {
+    clearTimeout(resizeTimer)
+    resizeTimer = null
+  }
+  chartInstance?.dispose()
+  chartInstance = null
+}
+
+onMounted(() => {
+  initChart()
+})
+
+onUnmounted(() => {
+  destroyChart()
+})
+
+watch(
+  () => chartInstance,
+  (val) => {
+    if (val) {
+      fetchData()
+    }
+  }
+)
+</script>
+
+<style scoped>
+.chart-card {
+  border-radius: var(--radius-lg);
+  min-height: 420px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  overflow: visible;
+}
+
+.chart-card:hover {
+  border-color: var(--border-light);
+}
+
+.header-icon {
+  margin-right: 8px;
+  color: var(--primary);
+}
+
+.help-icon {
+  color: var(--text-muted);
+  cursor: help;
+  transition: var(--transition-base);
+}
+
+.help-icon:hover {
+  color: var(--primary);
+}
+
+.card-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.card-title {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--text-primary);
+}
+
+.chart-container {
+  height: 360px;
+  overflow: visible;
+}
+</style>
+
+<style>
+.chart-card .el-card__header {
+  border-bottom: none !important;
+}
+</style>
diff --git a/WebUI/src/components/ValidationGauge.vue b/WebUI/src/components/ValidationGauge.vue
new file mode 100644
index 0000000..6ff521b
--- /dev/null
+++ b/WebUI/src/components/ValidationGauge.vue
@@ -0,0 +1,269 @@
+<template>
+  <el-card class="chart-card" shadow="hover">
+    <template #header>
+      <div class="card-header">
+        <span class="card-title">
+          <el-icon class="header-icon"><DataAnalysis /></el-icon>
+          验证成功率
+        </span>
+        <el-tooltip content="已验证可用代理占总验证代理的比例">
+          <el-icon class="help-icon"><InfoFilled /></el-icon>
+        </el-tooltip>
+      </div>
+    </template>
+    <div ref="chartRef" class="chart-container"></div>
+  </el-card>
+</template>
+
+<script setup>
+import { ref, onMounted, onUnmounted, watch, computed } from 'vue'
+import { InfoFilled, DataAnalysis } from '@element-plus/icons-vue'
+import * as echarts from 'echarts'
+
+const props = defineProps({
+  data: {
+    type: Object,
+    default: () => ({})
+  }
+})
+
+const chartRef = ref(null)
+let chartInstance = null
+let resizeTimer = null
+const cachedColors = ref(null)
+
+const successRate = computed(() => {
+  const available = props.data?.available || 0
+  const invalid = props.data?.invalid_count || 0
+  const total = available + invalid
+  if (total === 0) return 0
+  return Math.round((available / total) * 100 * 10) / 10
+})
+
+function loadColors() {
+  if (cachedColors.value) return cachedColors.value
+
+  const getCssVar = (name, fallback) =>
+    getComputedStyle(document.documentElement).getPropertyValue(name).trim() || fallback
+
+  cachedColors.value = {
+    primary: getCssVar('--primary', '#927CFF'),
+    success: getCssVar('--success', '#22C55E'),
+    warning: getCssVar('--warning', '#F59E0B'),
+    danger: getCssVar('--danger', '#EF4444'),
+    info: getCssVar('--info', '#38BDF8'),
+    textPrimary: getCssVar('--text-primary', '#F5F7FA'),
+    textSecondary: getCssVar('--text-secondary', '#A5AEBD'),
+    surface: getCssVar('--surface', '#181C25')
+  }
+  return cachedColors.value
+}
+
+function getChartOption() {
+  const colors = cachedColors.value
+  const rate = successRate.value
+
+  const getColor = (val) => {
+    if (val >= 80) return colors.success
+    if (val >= 50) return colors.warning
+    return colors.danger
+  }
+
+  return {
+    series: [
+      {
+        type: 'gauge',
+        startAngle: 200,
+        endAngle: -20,
+        radius: '90%',
+        center: ['50%', '60%'],
+        min: 0,
+        max: 100,
+        splitNumber: 5,
+        itemStyle: {
+          color: getColor(rate)
+        },
+        progress: {
+          show: true,
+          width: 18,
+          roundCap: true
+        },
+        pointer: {
+          show: true,
+          length: '60%',
+          width: 6,
+          itemStyle: {
+            color: colors.textSecondary
+          }
+        },
+        axisLine: {
+          lineStyle: {
+            width: 18,
+            color: [[1, colors.surface]]
+          },
+          roundCap: true
+        },
+        axisTick: {
+          show: true,
+          distance: -20,
+          length: 6,
+          lineStyle: {
+            color: colors.textSecondary,
+            width: 1
+          }
+        },
+        splitLine: {
+          show: true,
+          distance: -24,
+          length: 10,
+          lineStyle: {
+            color: colors.textSecondary,
+            width: 2
+          }
+        },
+        axisLabel: {
+          show: true,
+          distance: -35,
+          color: colors.textSecondary,
+          fontSize: 11,
+          formatter: '{value}%'
+        },
+        anchor: {
+          show: true,
+          size: 10,
+          itemStyle: {
+            color: colors.textSecondary,
+            borderWidth: 2,
+            borderColor: colors.surface
+          }
+        },
+        title: {
+          show: true,
+          offsetCenter: [0, '15%'],
+          fontSize: 12,
+          color: colors.textSecondary
+        },
+        detail: {
+          show: true,
+          offsetCenter: [0, '-10%'],
+          valueAnimation: true,
+          fontSize: 28,
+          fontWeight: 'bold',
+          color: getColor(rate),
+          formatter: '{value}%'
+        },
+        data: [
+          {
+            value: rate,
+            name: '验证通过率'
+          }
+        ]
+      }
+    ]
+  }
+}
+
+function initChart() {
+  if (!chartRef.value) return
+
+  loadColors()
+  if (chartInstance) {
+    updateChart()
+    return
+  }
+
+  chartInstance = echarts.init(chartRef.value)
+  updateChart()
+
+  window.addEventListener('resize', handleResize)
+}
+
+function updateChart() {
+  if (!chartInstance) return
+  chartInstance.setOption(getChartOption(), true)
+}
+
+function handleResize() {
+  if (resizeTimer) clearTimeout(resizeTimer)
+  resizeTimer = setTimeout(() => {
+    chartInstance?.resize()
+  }, 200)
+}
+
+function destroyChart() {
+  window.removeEventListener('resize', handleResize)
+  if (resizeTimer) {
+    clearTimeout(resizeTimer)
+    resizeTimer = null
+  }
+  chartInstance?.dispose()
+  chartInstance = null
+}
+
+watch(
+  () => props.data,
+  () => {
+    if (!chartInstance) {
+      initChart()
+    } else {
+      updateChart()
+    }
+  },
+  { deep: true }
+)
+
+onMounted(() => {
+  initChart()
+})
+
+onUnmounted(() => {
+  destroyChart()
+})
+</script>
+
+<style scoped>
+.chart-card {
+  border-radius: var(--radius-lg);
+  min-height: 280px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+}
+
+.chart-card:hover {
+  border-color: var(--border-light);
+}
+
+.header-icon {
+  margin-right: 8px;
+  color: var(--primary);
+}
+
+.help-icon {
+  color: var(--text-muted);
+  cursor: help;
+  transition: var(--transition-base);
+}
+
+.help-icon:hover {
+  color: var(--primary);
+}
+
+.card-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.card-title {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--text-primary);
+}
+
+.chart-container {
+  height: 220px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+</style>
diff --git a/WebUI/src/views/Dashboard.vue b/WebUI/src/views/Dashboard.vue
index a3f8361..96507d3 100644
--- a/WebUI/src/views/Dashboard.vue
+++ b/WebUI/src/views/Dashboard.vue
@@ -47,25 +47,6 @@
       />
     </div>
 
-    <el-row :gutter="20" class="charts-row">
-      <el-col :xs="24" :lg="16">
-        <el-row :gutter="16" class="charts-inner">
-          <el-col :xs="24" :md="12">
-            <ProtocolChart :data="stats" variant="available" compact />
-          </el-col>
-          <el-col :xs="24" :md="12">
-            <ProtocolChart :data="stats" variant="pending" compact />
-          </el-col>
-        </el-row>
-      </el-col>
-      <el-col :xs="24" :lg="8">
-        <QuickActions 
-          @export="handleExport" 
-          @clean="handleClean" 
-        />
-      </el-col>
-    </el-row>
-
     <!-- 系统状态 -->
     <el-row :gutter="20" class="status-row">
       <el-col :xs="24">
@@ -76,6 +57,16 @@
                 <el-icon><InfoFilled /></el-icon>
                 系统状态
               </span>
+              <div class="header-actions">
+                <el-button type="success" @click="handleExport">
+                  <el-icon><Download /></el-icon>
+                  导出代理
+                </el-button>
+                <el-button type="warning" @click="handleClean">
+                  <el-icon><Delete /></el-icon>
+                  清理无效
+                </el-button>
+              </div>
             </div>
           </template>
           <div class="status-list">
@@ -105,6 +96,25 @@
         </el-card>
       </el-col>
     </el-row>
+
+    <el-row :gutter="20" class="charts-row">
+      <el-col :xs="24" :md="12">
+        <ProtocolChart :data="stats" variant="available" compact />
+      </el-col>
+      <el-col :xs="24" :md="12">
+        <ProtocolChart :data="stats" variant="pending" compact />
+      </el-col>
+    </el-row>
+
+    <!-- 延迟分布和评分分布 -->
+    <el-row :gutter="20" class="charts-row">
+      <el-col :xs="24" :md="12">
+        <LatencyHistogram />
+      </el-col>
+      <el-col :xs="24" :md="12">
+        <ScoreDistribution />
+      </el-col>
+    </el-row>
   </div>
 </template>
 
@@ -120,13 +130,16 @@ import {
   InfoFilled,
   Clock,
   Odometer,
-  WarningFilled
+  WarningFilled,
+  Download,
+  Delete
 } from '@element-plus/icons-vue'
 import { useProxyStore } from '../stores/proxy'
 import { formatNumber } from '../utils/format'
 import StatCard from '../components/StatCard.vue'
 import ProtocolChart from '../components/ProtocolChart.vue'
-import QuickActions from '../components/QuickActions.vue'
+import LatencyHistogram from '../components/LatencyHistogram.vue'
+import ScoreDistribution from '../components/ScoreDistribution.vue'
 import PageHeader from '../components/PageHeader.vue'
 import { useStatsWebSocket } from '../composables/useStatsWebSocket'
 
@@ -143,7 +156,8 @@ const latencyLabel = computed(() => {
   if (ms == null || ms === '' || Number(ms) <= 0) {
     return '—'
   }
-  return `${formatNumber(Number(ms), 1)} ms`
+  const seconds = Number(ms) / 1000
+  return `${formatNumber(seconds, 2)} s`
 })
 
 async function refreshData() {
@@ -220,6 +234,9 @@ onMounted(async () => {
 .card-header {
   font-size: 16px;
   font-weight: 600;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
 }
 
 .card-title {
@@ -228,6 +245,11 @@ onMounted(async () => {
   gap: 8px;
 }
 
+.header-actions {
+  display: flex;
+  gap: 8px;
+}
+
 .status-list {
   display: flex;
   flex-wrap: wrap;
@@ -262,3 +284,9 @@ onMounted(async () => {
   }
 }
 </style>
+
+<style>
+.status-card .el-card__header {
+  border-bottom: none !important;
+}
+</style>
diff --git a/app/api/routes/proxies.py b/app/api/routes/proxies.py
index b653e4c..72d7ee1 100644
--- a/app/api/routes/proxies.py
+++ b/app/api/routes/proxies.py
@@ -108,3 +108,21 @@ async def batch_delete(
 async def clean_invalid(service: ProxyService = Depends(get_proxy_service)):
     count = await service.clean_invalid()
     return success_response(f"清理了 {count} 个无效代理", {"deleted_count": count})
+
+
+@router.get("/latency-distribution")
+async def get_latency_distribution(
+    service: ProxyService = Depends(get_proxy_service),
+):
+    """获取延迟分布数据，用于直方图展示"""
+    distribution = await service.get_latency_distribution()
+    return success_response("获取延迟分布成功", distribution)
+
+
+@router.get("/score-distribution")
+async def get_score_distribution(
+    service: ProxyService = Depends(get_proxy_service),
+):
+    """获取评分分布数据，用于柱状图展示"""
+    distribution = await service.get_score_distribution()
+    return success_response("获取评分分布成功", distribution)
diff --git a/app/repositories/proxy_repo.py b/app/repositories/proxy_repo.py
index c4dc3a7..e726079 100644
--- a/app/repositories/proxy_repo.py
+++ b/app/repositories/proxy_repo.py
@@ -526,3 +526,73 @@ class ProxyRepository:
         except Exception as e:
             logger.error(f"clean_expired failed: {e}", exc_info=True)
             return 0
+
+    @staticmethod
+    async def get_latency_distribution(db: aiosqlite.Connection) -> dict:
+        """获取延迟分布数据（仅已验证可用的代理）"""
+        try:
+            async with db.execute(
+                """
+                SELECT response_time_ms FROM proxies
+                WHERE validated = 1 AND score > 0 AND response_time_ms IS NOT NULL AND response_time_ms > 0
+                """
+            ) as cursor:
+                rows = await cursor.fetchall()
+                if not rows:
+                    return {"ranges": [], "counts": []}
+
+                latencies = [row[0] for row in rows]
+                ranges = ["<500ms", "500-1s", "1-2s", "2-3s", ">3s"]
+                counts = [0, 0, 0, 0, 0]
+
+                for lat in latencies:
+                    if lat < 500:
+                        counts[0] += 1
+                    elif lat < 1000:
+                        counts[1] += 1
+                    elif lat < 2000:
+                        counts[2] += 1
+                    elif lat < 3000:
+                        counts[3] += 1
+                    else:
+                        counts[4] += 1
+
+                return {"ranges": ranges, "counts": counts}
+        except Exception as e:
+            logger.error(f"get_latency_distribution failed: {e}", exc_info=True)
+            return {"ranges": [], "counts": []}
+
+    @staticmethod
+    async def get_score_distribution(db: aiosqlite.Connection) -> dict:
+        """获取评分分布数据（仅已验证可用的代理）"""
+        try:
+            async with db.execute(
+                """
+                SELECT score FROM proxies
+                WHERE validated = 1 AND score > 0
+                """
+            ) as cursor:
+                rows = await cursor.fetchall()
+                if not rows:
+                    return {"ranges": [], "counts": []}
+
+                scores = [row[0] for row in rows]
+                ranges = ["80-100", "60-80", "40-60", "20-40", "0-20"]
+                counts = [0, 0, 0, 0, 0]
+
+                for score in scores:
+                    if score >= 80:
+                        counts[0] += 1
+                    elif score >= 60:
+                        counts[1] += 1
+                    elif score >= 40:
+                        counts[2] += 1
+                    elif score >= 20:
+                        counts[3] += 1
+                    else:
+                        counts[4] += 1
+
+                return {"ranges": ranges, "counts": counts}
+        except Exception as e:
+            logger.error(f"get_score_distribution failed: {e}", exc_info=True)
+            return {"ranges": [], "counts": []}
diff --git a/app/services/proxy_service.py b/app/services/proxy_service.py
index 569eec9..17756ac 100644
--- a/app/services/proxy_service.py
+++ b/app/services/proxy_service.py
@@ -147,3 +147,11 @@ class ProxyService:
         if isinstance(dt, str):
             return dt
         return dt.isoformat()
+
+    async def get_latency_distribution(self) -> dict:
+        async with get_db() as db:
+            return await self.proxy_repo.get_latency_distribution(db)
+
+    async def get_score_distribution(self) -> dict:
+        async with get_db() as db:
+            return await self.proxy_repo.get_score_distribution(db)