Add locationtypes + location tree (ADR-001)

- New locationtypes lookup (LocationType model) seeded with section, cell,
  subcell, operation, meetingroom, lab, office, storage, hallway,
  networkcloset, building.
- locations gains locationtypeid + parentlocationid (self-FK) for the site
  location tree. Migration 7c03; cli reference-data seeds the types.
- GET /api/locations/types; locations CRUD accepts type + parent; list/detail
  return locationtypename + parentlocationname.
- Locations settings page: Type column + Type/Parent selectors in the modal.

Realizes the operation-as-Location model (operations are locations with
locationtypeid='operation').

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

shopdb/core/api/locations.py

@@ -4,7 +4,7 @@ from flask import Blueprint, request
 from flask_jwt_extended import jwt_required
 
 from shopdb.extensions import db
-from shopdb.core.models import Location
+from shopdb.core.models import Location, LocationType
 from shopdb.utils.responses import (
     success_response,
     error_response,
@@ -16,6 +16,19 @@ from shopdb.utils.pagination import get_pagination_params, paginate_query
 locations_bp = Blueprint('locations', __name__)
 
 
+@locations_bp.route('/types', methods=['GET'])
+@jwt_required(optional=True)
+def list_location_types():
+    """List all location types."""
+    types = LocationType.query.filter_by(isactive=True).order_by(
+        LocationType.locationtype).all()
+    return success_response([{
+        'locationtypeid': t.locationtypeid,
+        'locationtype': t.locationtype,
+        'description': t.description,
+    } for t in types])
+
+
 @locations_bp.route('', methods=['GET'])
 @jwt_required(optional=True)
 def list_locations():
@@ -81,6 +94,8 @@ def create_location():
         floor=data.get('floor'),
         room=data.get('room'),
         description=data.get('description'),
+        locationtypeid=data.get('locationtypeid'),
+        parentlocationid=data.get('parentlocationid'),
         mapimage=data.get('mapimage'),
         mapwidth=data.get('mapwidth'),
         mapheight=data.get('mapheight')
@@ -117,7 +132,9 @@ def update_location(location_id: int):
                 http_code=409
             )
 
-    for key in ['locationname', 'building', 'floor', 'room', 'description', 'mapimage', 'mapwidth', 'mapheight', 'isactive']:
+    for key in ['locationname', 'building', 'floor', 'room', 'description',
+                'locationtypeid', 'parentlocationid', 'mapimage', 'mapwidth',
+                'mapheight', 'isactive']:
         if key in data:
             setattr(loc, key, data[key])