New /trades page for viewing user's Bitcoin trades:
- Upcoming trades with cancel functionality
- Trade history (completed, cancelled, no-show)
- Direction badges (BUY/SELL with colors)
- EUR ↔ BTC amounts in readable format
- Rate and premium display
Update Header navigation:
- Exchange replaces Book for regular users
- My Trades replaces Appointments
Update profile page test for new nav items.
Issue #2: The profile route used a custom role-based check instead
of the permission-based pattern used everywhere else.
Changes:
- Add MANAGE_OWN_PROFILE permission to backend Permission enum
- Add permission to ROLE_REGULAR role definition
- Update profile routes to use require_permission(MANAGE_OWN_PROFILE)
- Remove custom require_regular_user dependency
- Update frontend Permission constant and profile page
- Update invites page to use permission instead of role check
- Update profile tests with proper permission mocking
This ensures consistent authorization patterns across all routes.
