feat: 足迹 Footprints 个人留痕系统

桌面应用(Tauri+React+SQLite)：时间线/记录/学年学科成绩梯度/统计/类型与字段模板/附件内容寻址/详情视图/PWA 同步服务端(sync-server)：多用户+邀请码/LWW推拉/seq游标/附件去重/Docker部署多端同步地基：uuid v7/HLC混合逻辑时钟/软删除墓碑/sync_oplog，Node与Rust双端一致并通过自动化测试
2026-10-16 13:53:15 +08:00
commit 42ca57abfd
107 changed files with 234676 additions and 0 deletions
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+{
+  "name": "footprints-sync-server",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "start": "node src/index.mjs"
+  },
+  "engines": {
+    "node": ">=24"
+  }
+}