feat(pos): add plate lookup (#8), 326 translations (#12), bulk image import (#11)

- Plate lookup: new plate_vehicles table (v1.7 migration), plate_lookup
  service with Mexican plate validation, GET/POST endpoints on catalog_bp,
  plate search UI in catalog vehicle selector
- Translations: extend PART_TRANSLATIONS from ~80 to 326 entries covering
  brake, engine, fuel, cooling, electrical, drivetrain, suspension, steering,
  exhaust, A/C, lighting, body, interior, fluids, and category translations
- Bulk images: image_scraper service with download+resize+placeholder
  generation, bulk-images and auto-image endpoints on inventory_bp

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pos/blueprints/catalog_bp.py

@@ -18,6 +18,7 @@ from middleware import require_auth
 from tenant_db import get_master_conn, get_tenant_conn
 from services import catalog_service
 from services.vin_decoder import decode_vin
+from services.plate_lookup import search_plate, register_plate, is_valid_mexican_plate, normalize_plate
 
 catalog_bp = Blueprint('catalog', __name__, url_prefix='/pos/api/catalog')
 
@@ -227,6 +228,113 @@ def decode_vin_route(vin):
     return jsonify(result)
 
 
+# ─── Plate Lookup ───
+
+@catalog_bp.route('/plate/<plate>', methods=['GET'])
+@require_auth('catalog.view')
+def plate_lookup(plate):
+    """Look up a vehicle by Mexican license plate in the local plate_vehicles table.
+    If found, also tries to match the vehicle to the catalog DB.
+    """
+    plate = (plate or '').strip()
+    if not plate:
+        return jsonify({'error': 'Placa requerida.'}), 400
+
+    if not is_valid_mexican_plate(plate):
+        return jsonify({'error': 'Formato de placa no valido. Ej: ABC-1234 o AB-123-C'}), 400
+
+    tenant = None
+    master = None
+    try:
+        tenant = get_tenant_conn(g.tenant_id)
+        result = search_plate(tenant, plate)
+
+        if not result:
+            return jsonify({
+                'found': False,
+                'plate': normalize_plate(plate),
+                'message': 'Placa no registrada.'
+            })
+
+        # Try to match to catalog
+        catalog_match = None
+        try:
+            master = get_master_conn()
+            catalog_match = _match_plate_to_catalog(master, result)
+        except Exception:
+            pass
+        finally:
+            if master:
+                try: master.close()
+                except: pass
+                master = None
+
+        response = {
+            'found': True,
+            'plate': result['plate'],
+            'make': result['make'],
+            'model': result['model'],
+            'year': result['year'],
+            'vin': result['vin'],
+            'customer_id': result['customer_id'],
+        }
+        if catalog_match:
+            response['catalog_match'] = catalog_match
+
+        return jsonify(response)
+
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+    finally:
+        if tenant:
+            try: tenant.close()
+            except: pass
+        if master:
+            try: master.close()
+            except: pass
+
+
+@catalog_bp.route('/plate', methods=['POST'])
+@require_auth('catalog.view')
+def plate_register():
+    """Register or update a plate-to-vehicle mapping."""
+    data = request.get_json() or {}
+    plate = (data.get('plate') or '').strip()
+    if not plate:
+        return jsonify({'error': 'plate required'}), 400
+
+    if not is_valid_mexican_plate(plate):
+        return jsonify({'error': 'Formato de placa no valido.'}), 400
+
+    tenant = None
+    try:
+        tenant = get_tenant_conn(g.tenant_id)
+        rec_id = register_plate(
+            tenant, plate,
+            make=data.get('make'),
+            model=data.get('model'),
+            year=data.get('year'),
+            vin=data.get('vin'),
+            customer_id=data.get('customer_id'),
+        )
+        return jsonify({'id': rec_id, 'message': 'Placa registrada.'})
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+    finally:
+        if tenant:
+            try: tenant.close()
+            except: pass
+
+
+def _match_plate_to_catalog(master_conn, plate_info):
+    """Try to match plate vehicle info to the catalog DB (same logic as VIN)."""
+    return _match_vin_to_catalog(master_conn, {
+        'make': plate_info.get('make'),
+        'model': plate_info.get('model'),
+        'year': plate_info.get('year'),
+    })
+
+
 def _match_vin_to_catalog(master_conn, vin_info):
     """Try to find brand_id, model_id, year_id, mye_id from decoded VIN info."""
     make = (vin_info.get('make') or '').upper().strip()