wangjia ebf79d0355 feat: LicenseGuard 中间件 + Flutter license model/repo (21D+21E)
21D — 后端:
- Claims 新增 LicenseExpiresAt (*int64 unix 秒),写入 JWT 避免每次查库
- middleware/license_guard.go: CalcLicensePhase / LicenseGuard / GetLicensePhase
  - grace(0-7d): 允许通行
  - readonly(7-15d): 拦截非 GET 写操作 → 403
  - locked(15d+): 全部拦截 → 403
- auth.go: issueTokens 在 JWT 中嵌入 license expires_at;Login 检查 locked 拒绝登录
- router: license/* 路由豁免 LicenseGuard(锁定时仍可激活/查状态)

21E — Flutter 前端:
- models/license.dart: 新 LicenseInfo,含 phase/maxDevices,去掉旧 activatedAt
- core/device/device_id.dart: 持久化 UUID-v4 作为设备 ID(SharedPreferences)
- repositories/license_repository.dart: getInfo/activate/deactivate,激活时携带设备信息
- providers/license_provider.dart: 改接 LicenseRepository
- settings_screen.dart: activatedAt 改为显示 maxDevices

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-06-10 00:52:07 +08:00
2026-06-07 08:50:34 +08:00
2026-06-09 09:35:01 +08:00
2026-05-30 23:53:51 +08:00
2026-06-09 12:12:26 +08:00
2026-06-09 00:15:46 +08:00
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