fix: address ask-user findings from review

- Move unit loading to use real /api/tickets/units endpoint
- Match unit code format to backend seed (0101E style)
- Send unit_id in create ticket payload
- Fix tech IDs to match seed order (9-15 for Prosper-Afful)
- Add customer_name and phone fields to TicketCreate schema
- Map form customer_name/phone into API payload

app/routers/tickets.py

@@ -16,6 +16,7 @@ from app.core.database import get_db
 from app.core.security import get_current_user
 from app.models.category import Category
 from app.models.ticket import Ticket, TicketPhoto
+from app.models.unit import Unit
 from app.models.user import User
 from app.schemas.ticket import (
     CategoryOut,
@@ -27,6 +28,7 @@ from app.schemas.ticket import (
     TicketOut,
     TicketPhotoOut,
     TicketUpdate,
+    UnitOut,
 )
 from app.services import ticket as ticket_service
 from app.services.sla import get_sla_status
@@ -38,6 +40,20 @@ UPLOADS_DIR = settings.BASE_DIR / "uploads"
 UPLOADS_DIR.mkdir(parents=True, exist_ok=True)
 
 
+# ── Units ──────────────────────────────────────────────────────────
+@router.get("/units", response_model=list[UnitOut])
+async def list_units(
+    db: Annotated[AsyncSession, Depends(get_db)],
+    property_filter: str | None = Query(None, alias="property"),
+) -> list[Unit]:
+    """List all units, optionally filtered by property (East/West)."""
+    query = select(Unit).order_by(Unit.apartment_code)
+    if property_filter:
+        query = query.where(Unit.property == property_filter)
+    result = await db.execute(query)
+    return list(result.scalars().all())
+
+
 # ── Categories ──────────────────────────────────────────────────────
 async def _build_category_tree(db: AsyncSession, parent_id: int | None = None) -> list[CategoryTreeOut]:
     """Build a nested category tree."""