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/templates/login.html

@@ -387,7 +387,7 @@
 
         setTimeout(function() {
           var role = (result.data.employee.role || '').toLowerCase();
-          if (role === 'workshop' || role === 'mechanic') {
+          if (role === 'workshop' || role === 'mechanic' || role === 'counter') {
             window.location.href = '/pos/workshop';
           } else {
             window.location.href = '/pos/catalog';