feat: M0-M2 骨架落地（服务端/前端/宿主/数据库/积分引擎）

- server: Go 单二进制骨架，embed 内嵌前端，配置/迁移/HTTP 路由
- store: system.db + event.db 两套迁移，业务表 + 种子数据
- domain: 积分引擎（并列三口径/计分通道/流水/排名/破纪录）+ 68 个测试
- web: Vite + Vue 三入口骨架 + shared 层（类型/API/WebSocket 客户端）
- console: Electron 宿主骨架（选屏/防熄屏/进程守护/托盘）

console/renderer/index.html

@@ -0,0 +1,103 @@
+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="UTF-8" />
+    <meta
+      http-equiv="Content-Security-Policy"
+      content="default-src 'none'; script-src 'self'; style-src 'self'; img-src 'self' data:; connect-src 'none'"
+    />
+    <title>Scoreboard Console · 启动管理</title>
+    <link rel="stylesheet" href="styles.css" />
+  </head>
+  <body>
+    <header class="topbar">
+      <div class="brand">
+        <span class="brand-mark"></span>
+        <div>
+          <h1>Scoreboard Console</h1>
+          <p class="brand-sub">赛事积分榜 · 桌面宿主</p>
+        </div>
+      </div>
+      <div class="topbar-right">
+        <span id="app-version" class="muted"></span>
+      </div>
+    </header>
+
+    <main>
+      <section class="card">
+        <div class="card-head">
+          <h2>服务端状态</h2>
+          <div class="actions">
+            <button id="btn-start" class="btn primary" type="button">启动服务</button>
+            <button id="btn-stop" class="btn" type="button">停止服务</button>
+            <button id="btn-restart" class="btn" type="button">重启服务</button>
+          </div>
+        </div>
+
+        <div class="status-row">
+          <span id="state-dot" class="dot"></span>
+          <strong id="state-label">已停止</strong>
+          <span id="state-detail" class="muted"></span>
+        </div>
+
+        <dl class="kv">
+          <div>
+            <dt>服务地址</dt>
+            <dd id="k-url">—</dd>
+          </div>
+          <div>
+            <dt>进程 PID</dt>
+            <dd id="k-pid">—</dd>
+          </div>
+          <div>
+            <dt>自动重启</dt>
+            <dd id="k-restarts">—</dd>
+          </div>
+          <div>
+            <dt>防熄屏</dt>
+            <dd id="k-power">—</dd>
+          </div>
+          <div class="wide">
+            <dt>服务端程序</dt>
+            <dd id="k-exe" class="mono">—</dd>
+          </div>
+          <div class="wide">
+            <dt>配置文件</dt>
+            <dd id="k-config" class="mono">—</dd>
+          </div>
+        </dl>
+
+        <p id="config-warning" class="warning" hidden></p>
+      </section>
+
+      <section class="card">
+        <div class="card-head">
+          <h2>大屏窗口</h2>
+          <div class="actions">
+            <button id="btn-relayout" class="btn" type="button">重新排布</button>
+            <button id="btn-open-admin" class="btn" type="button">打开服务端管理面板</button>
+          </div>
+        </div>
+        <p class="hint">
+          单屏时窗口化、按 F11 切换全屏；多屏时除主屏外每块屏一个 kiosk 窗口，各锁一页。
+        </p>
+        <ul id="display-list" class="display-list">
+          <li class="muted">尚未打开大屏窗口</li>
+        </ul>
+      </section>
+
+      <section class="card log-card">
+        <div class="card-head">
+          <h2>运行日志</h2>
+          <div class="actions">
+            <label class="check"><input id="autoscroll" type="checkbox" checked /> 自动滚动</label>
+            <button id="btn-clear-log" class="btn" type="button">清空</button>
+          </div>
+        </div>
+        <pre id="log" class="log"></pre>
+      </section>
+    </main>
+
+    <script src="app.js"></script>
+  </body>
+</html>