- Add GET /api/v1/subscription/plans public endpoint (no auth needed)
that reads prices from system_settings table
- Subscribe-plans page now loads prices from server on show
- Falls back to hardcoded defaults if API fails
- Add api.getPlans() to miniprogram API module
- Profile: show "未订阅" card when subscription inactive/0 days
- Profile: subscription management navigates to page instead of modal
- Subscribe-plans: data-driven plan cards with mock payment flow
- Subscribe-plans: show current subscription status at top
- Subscribe-prompt: "先使用普通模式" goes to wear-check directly
- Add help and contact placeholder pages
- Fix unbindDevice to work without explicit deviceId