- Add backend API endpoint /api/users/system-strategies for system-wide strategy data
- Query all strategies across all users with positions, PnL, trade stats
- Add summary statistics (total strategies, running count, total capital, total PnL/ROI)
- Support filtering by status (running/stopped) and search by strategy/symbol/user
- Add System Overview tab with summary cards and detailed strategy table
- Display user, strategy name, status, symbol, capital, PnL/ROI, positions, trades, indicator, exchange, timeframe, leverage
- Add i18n translations for zh-CN and en-US
- Lazy-load strategy data when tab is first accessed
- Move notification config from system settings (.env) to user profile (database)
- Add user-specific notification settings API endpoints (GET/PUT /api/user/notification-settings)
- Add notification_settings column to qd_users table
- Update portfolio and trading-assistant to use profile notification settings
- Add notification settings UI in profile page with all channels (browser, telegram, email, phone, discord, webhook)
- Add i18n translations for notification settings in 10 languages
- Fix timestamp parsing in TradingRecords and portfolio (handle both ISO strings and Unix timestamps)
- Fix header icons alignment for mobile responsive layout
- Fix equity curve timestamp bug (handle datetime objects properly)
- Remove unused login.js exports and clean up user.js store
- Remove husky, commitlint and other dev dependencies
- Clean up env.example by removing user-specific notification params
- Update signal_notifier to prioritize user-specific tokens over global env vars
TIANHE