Move program CRUD from store to merchant/admin interfaces.
Store becomes view-only for program config while merchant gets
full CRUD and admin gets override capabilities.
Merchant portal:
- New API endpoints (GET/POST/PATCH/DELETE /program)
- New settings page with create/edit/delete form
- Overview page now has Create/Edit Program buttons
- Settings menu item added to sidebar
Admin portal:
- New CRUD endpoints (create for merchant, update, delete)
- New activate/deactivate program endpoints
- Programs list has edit and toggle buttons per row
- Merchant detail has create/delete/toggle program actions
Store portal:
- Removed POST/PATCH /program endpoints (now read-only)
- Removed settings page route and template
- Terminal, cards, stats, enroll unchanged
Tests: 112 passed (58 new) covering merchant API, admin CRUD,
store endpoint removal, and program service unit tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>