feat: cashier/counter reports, service-order & remission flows, Rached migration utils

- Add "Mis cortes de caja" report for cashiers/counters with sales detail.
- Cash register history scoped to own cuts for non-admin roles; new /register/<id>/sales endpoint.
- Remove dashboard from cashier menu; add Reports to cashier/counter.
- Service orders: assign mechanic, budget field, invoice flag, counter/cashier can add items/remissions, convert to remission.
- Remission notes module (UI, CSS, courier, counter remissions).
- Customer hard-delete and vehicle/customer linkage in workshop.
- POS: always show search results, compact payment grid, credit validation, tier pricing (5%/10%), ticket with customer/folio.
- Inventory: CSV template with sku_secondary, alias import.
- Rached migration scripts and DB migrations.
- Version-bump cached JS/CSS query strings.

Excludes local Rached session tokens/captures (rached_*.json / rached_*.txt).

pos/blueprints/inventory_bp.py

@@ -103,8 +103,13 @@ def list_items():
     # branch_id no longer filters inventory rows (shared catalog).
     # It is used only to show per-branch stock.
     if search:
-        where_clauses.append("(i.part_number ILIKE %s OR i.name ILIKE %s OR i.barcode ILIKE %s)")
-        params.extend([f'%{search}%', f'%{search}%', f'%{search}%'])
+        # Search also matches alternate / alias SKUs.
+        where_clauses.append(
+            "(i.part_number ILIKE %s OR i.name ILIKE %s OR i.barcode ILIKE %s "
+            "OR EXISTS (SELECT 1 FROM inventory_sku_aliases a "
+            "WHERE a.inventory_id = i.id AND a.is_active = true AND a.sku ILIKE %s))"
+        )
+        params.extend([f'%{search}%', f'%{search}%', f'%{search}%', f'%{search}%'])
     if category:
         where_clauses.append("i.category_id = %s")
         params.append(int(category))
@@ -490,6 +495,7 @@ def bulk_import_items():
         'marca': 'brand', 'precio': 'price', 'costo': 'cost',
         'cantidad': 'stock', 'existencia': 'stock', 'inventario': 'stock',
         'ubicacion': 'location', 'categoria': 'category',
+        'sku_secundario': 'sku_secondary', 'sku_alt': 'sku_secondary', 'sku_alternativo': 'sku_secondary',
         'fabricante': 'make', 'vehiculo': 'make', 'auto': 'make',
         'modelo': 'model', 'anio': 'year', 'ano': 'year',
         'motor': 'engine', 'codigo_motor': 'engine_code',
@@ -599,7 +605,20 @@ def bulk_import_items():
             created_ids.append(item_id)
             created += 1
 
-            # ---------- 2. Vehicle compatibility ----------
+            # ---------- 2. Secondary SKU alias ----------
+            sku_secondary = str(row.get('sku_secondary', '')).strip()
+            if sku_secondary:
+                cur.execute(
+                    """
+                    INSERT INTO inventory_sku_aliases (inventory_id, sku, label)
+                    VALUES (%s, %s, %s)
+                    ON CONFLICT DO NOTHING
+                    """,
+                    (item_id, sku_secondary, 'Secundario')
+                )
+                conn.commit()
+
+            # ---------- 3. Vehicle compatibility ----------
             make = str(row.get('make', '')).strip()
             model = str(row.get('model', '')).strip()
             year_str = str(row.get('year', '')).strip()