Render the clinic services page (sections → services) inside the settings
sub-navigation shell (SettingsLayout, "خدمات" active) to match the Figma
settings design. Restyle section cards to show the service count and a
status toggle with edit/delete actions, and service cards with labelled
price/duration and personnel chips.
A service can now have multiple personnel: add an additive many-to-many
ServiceItem↔ClinicStaff (staffMembers, EAGER) while keeping the legacy
single `staff` column mirrored for backward compatibility. Endpoints accept
`staff_uuids[]` (falling back to the legacy single `staff_uuid`) and return
`staff_members[]`; the section list now reports `items_count`.
Backfill-safe: pre-migration rows fall back to the single staff in toArray.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
