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/config.json

@@ -0,0 +1,32 @@
+{
+  "server": {
+    "exe": "scoreboard.exe",
+    "args": ["-config", "config.yaml"],
+    "host": "127.0.0.1",
+    "port": 8080,
+    "autoStart": true,
+    "healthIntervalMs": 5000,
+    "restartDelayMs": 3000,
+    "maxRestarts": 0
+  },
+  "display": {
+    "selection": "all-secondary",
+    "displays": [],
+    "pages": ["standings", "medals", "individual", "results", "records"],
+    "pageParam": "page",
+    "kiosk": true,
+    "ignoreMouse": true,
+    "reloadEveryHours": 24,
+    "waitForServerMs": 20000,
+    "backgroundColor": "#0b0f1a"
+  },
+  "admin": {
+    "width": 1040,
+    "height": 760
+  },
+  "log": {
+    "maxLines": 2000,
+    "file": "logs/console.log",
+    "maxFileBytes": 4194304
+  }
+}