frontend phase 4: catalog browse (Home A5) & nurse service builder (B7)

Light up the two faces of the configurable service catalog over a new cached
services/catalog domain (consumes the b5 contract; unlocks f6 search).

- services/catalog: types/keys/constants/apis(client+mock+seam)/hooks/index +
  names.ts. Categories & option groups are session-cached reference data
  (Infinity staleTime, like geography); variant mutations invalidate
  myVariantsLists() and setQueryData the edited row. Mock-primary
  (USE_CATALOG_MOCK), one-line swap; mock reproduces the 400 missing-required
  and (nurse,category,option-set) 409 duplicate rules.
- Customer Home (A5): greeting+avatar, search bar (navigates toward f6),
  data-driven category grid (loading/empty/error), patient nudge from the
  cached f2 query. Deferred /search placeholder stub.
- Nurse Services & prices (B7) at /nurse/services: offerings list (active vs
  deactivated, edit, soft-deactivate w/ confirm, reactivate, no delete) and a
  3-step variant builder (category -> required/optional options -> price+unit+
  duration). Required-group gate; Toman->IRR digit-string at the field
  boundary (no float); live unit-aware estimated total (never from price
  alone); editable auto display_name; inline 409 duplicate warning; locked
  category edit form.
- Shared, tested components: CategoryTile, PriceDisplay, VariantCard. Money
  util: tomanToRial + multiplyIrr (integer-safe) + tests.
- i18n: catalog/services/search namespaces + home additions + nav.services
  (both locales, in sync). Icons, routes (SEARCH, NURSE_SERVICES), nurse nav.

Gate: npm run check green; npm run test:ci green (147 tests, +18 across 4
suites); npm run build green with NEXT_PUBLIC_API_URL set.

Docs: client/CLAUDE.md (Project Structure, caching note, namespaces), STATUS,
for-backend REQ-010 (pagination param casing), phase report, mocks registry.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

client/src/components/common/AppIcon/config.ts

@@ -40,6 +40,14 @@ import WarningIcon from '@mui/icons-material/WarningAmberOutlined';
 import LocationIcon from '@mui/icons-material/LocationOnOutlined';
 import DeleteIcon from '@mui/icons-material/DeleteOutlined';
 import CoverageIcon from '@mui/icons-material/MapOutlined';
+// Catalog — nurse services surface + the customer Home service-category grid (f4/b5)
+import ServicesIcon from '@mui/icons-material/LocalOfferOutlined';
+import CategoryIcon from '@mui/icons-material/CategoryOutlined';
+import ElderlyIcon from '@mui/icons-material/ElderlyOutlined';
+import PostSurgeryIcon from '@mui/icons-material/HealingOutlined';
+import InfantIcon from '@mui/icons-material/ChildCareOutlined';
+import ChronicIcon from '@mui/icons-material/MonitorHeartOutlined';
+import CompanionshipIcon from '@mui/icons-material/VolunteerActivismOutlined';
 
 /**
  * List of all available Icon names
@@ -95,4 +103,11 @@ export const ICONS /* Note: Setting type disables property autocomplete :( was -
   location: LocationIcon,
   delete: DeleteIcon,
   coverage: CoverageIcon,
+  services: ServicesIcon,
+  category: CategoryIcon,
+  elderly: ElderlyIcon,
+  post_surgery: PostSurgeryIcon,
+  infant: InfantIcon,
+  chronic: ChronicIcon,
+  companionship: CompanionshipIcon,
 };