Du Wenbo ef9b5d055f feat: add system settings, audit log, device detail, dark mode, i18n, email notifications ...

System Management:
- System Settings page with 8 configurable parameters (admin only)
- Audit Log page with filterable table (user, action, resource, date range)
- Audit logging wired into auth, devices, users, alarms, reports API handlers
- SystemSetting model + migration (002)

Device Detail:
- Dedicated /devices/:id page with 4 tabs (realtime, historical trends, alarm history, device info)
- ECharts historical charts with granularity/time range selectors
- Device name clickable in Devices and Monitoring tables → navigates to detail

Email & Scheduling:
- Email service with SMTP support (STARTTLS/SSL/plain)
- Alarm email notification with professional HTML template
- Report scheduler using APScheduler for cron-based auto-generation
- Scheduled report task seeded (daily at 8am)

UI Enhancements:
- Dark mode toggle (persisted to localStorage, Ant Design darkAlgorithm)
- Data comparison view in Analysis page (dual date range, side-by-side metrics)
- i18n framework (i18next) with zh/en translations for menu and common UI
- Language switcher in header (中文/English)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-02 19:42:22 +08:00

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