fix(brand-catalog): separate search input from content grid

- Add #brandCatalogSearch container in HTML for search inputs
- Move brand search input out of renderBrandList so it persists while typing
- Move parts search input out of renderPartsList so it persists while typing
- Reset now clears search container
- Bump JS cache bust to v=3

pos/static/js/brand-catalog.js

@@ -9,6 +9,8 @@
     _limit: 50,
     _total: 0,
 
+    el: function(id) { return document.getElementById(id); },
+
     _getToken: function() {
       return localStorage.getItem('pos_token');
     },
@@ -30,8 +32,6 @@
       return true;
     },
 
-    el: function(id) { return document.getElementById(id); },
-
     show: function() {
       if (!this._getToken()) {
         window.location.href = '/pos/login';
@@ -56,6 +56,7 @@
       this._allBrands = [];
       this._offset = 0;
       this._total = 0;
+      this.el('brandCatalogSearch').innerHTML = '';
     },
 
     loading: function(on) {
@@ -66,6 +67,10 @@
       this.el('brandCatalogContent').innerHTML = html;
     },
 
+    setSearch: function(html) {
+      this.el('brandCatalogSearch').innerHTML = html;
+    },
+
     setBreadcrumb: function(html) {
       this.el('brandCatalogBreadcrumb').innerHTML = html;
     },
@@ -75,6 +80,12 @@
       this.loading(true);
       this.state = 'brands';
       this.setBreadcrumb('<strong>Marcas de vehiculo</strong>');
+      this.setSearch(
+        '<input type="text" id="brandSearchInput" placeholder="Buscar marca..." ' +
+        'style="width:100%;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-md);' +
+        'font-size:var(--text-body);background:var(--color-surface);color:var(--color-text-primary);' +
+        'outline:none;" oninput="BrandCatalog.filterBrands(this.value)">'
+      );
       var self = this;
       fetch('/pos/api/catalog/vehicle-brands', { headers: this._headers() })
         .then(function(r) {
@@ -98,12 +109,7 @@
     },
 
     renderBrandList: function(brands) {
-      var html = '<div style="grid-column:1/-1;margin-bottom:var(--space-3);">' +
-        '<input type="text" id="brandSearchInput" placeholder="Buscar marca..." ' +
-        'style="width:100%;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-md);' +
-        'font-size:var(--text-body);background:var(--color-surface);color:var(--color-text-primary);' +
-        'outline:none;" oninput="BrandCatalog.filterBrands(this.value)">' +
-        '</div>';
+      var html = '';
       brands.forEach(function(b) {
         html += '<div class="catalog-category-card" onclick="BrandCatalog.selectBrand(' + JSON.stringify(b.name) + ')">' +
           '<div style="font-size:var(--text-h4);font-family:var(--font-heading);margin-bottom:4px;">' + escapeHtml(b.name) + '</div>' +
@@ -134,6 +140,7 @@
     loadCategories: function(brandName) {
       this.loading(true);
       this.state = 'categories';
+      this.setSearch('');
       this.setBreadcrumb(
         '<a href="javascript:void(0)" onclick="BrandCatalog.loadBrands()" style="color:var(--color-primary);text-decoration:none;">Marcas</a> &rsaquo; <strong>' + escapeHtml(brandName) + '</strong>'
       );
@@ -185,6 +192,16 @@
         '<a href="javascript:void(0)" onclick="BrandCatalog.selectBrand(' + JSON.stringify(brandName) + ')" style="color:var(--color-primary);text-decoration:none;">' + escapeHtml(brandName) + '</a> &rsaquo; ' +
         '<strong>' + escapeHtml(this.currentCategory.name) + '</strong>'
       );
+      this.setSearch(
+        '<div style="display:flex;gap:var(--space-2);flex-wrap:wrap;align-items:center;">' +
+          '<input type="text" id="partsSearchInput" placeholder="Buscar refaccion..." value="' + escapeHtml(searchTerm || '') + '" ' +
+          'style="flex:1;min-width:200px;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-md);' +
+          'font-size:var(--text-body);background:var(--color-surface);color:var(--color-text-primary);outline:none;" ' +
+          'onkeydown="if(event.key===\'Enter\')BrandCatalog.searchParts(this.value)">' +
+          '<button class="btn btn--primary btn--sm" onclick="BrandCatalog.searchParts(document.getElementById(\'partsSearchInput\').value)">Buscar</button>' +
+          '<button class="btn btn--secondary btn--sm" onclick="BrandCatalog.clearPartsSearch()">Limpiar</button>' +
+        '</div>'
+      );
       var url = '/pos/api/catalog/brand-parts?brand=' + encodeURIComponent(brandName) + '&category_id=' + encodeURIComponent(categoryId) +
                 '&limit=' + this._limit + '&offset=' + this._offset;
       if (searchTerm) {
@@ -215,15 +232,7 @@
     },
 
     renderPartsList: function(items, searchTerm) {
-      var html = '<div style="grid-column:1/-1;margin-bottom:var(--space-3);display:flex;gap:var(--space-2);flex-wrap:wrap;align-items:center;">' +
-        '<input type="text" id="partsSearchInput" placeholder="Buscar refaccion..." value="' + escapeHtml(searchTerm || '') + '" ' +
-        'style="flex:1;min-width:200px;padding:10px 14px;border:1px solid var(--color-border);border-radius:var(--radius-md);' +
-        'font-size:var(--text-body);background:var(--color-surface);color:var(--color-text-primary);outline:none;" ' +
-        'onkeydown="if(event.key===\'Enter\')BrandCatalog.searchParts(this.value)">' +
-        '<button class="btn btn--primary btn--sm" onclick="BrandCatalog.searchParts(document.getElementById(\'partsSearchInput\').value)">Buscar</button>' +
-        '<button class="btn btn--secondary btn--sm" onclick="BrandCatalog.clearPartsSearch()">Limpiar</button>' +
-        '</div>';
-
+      var html = '';
       if (!items.length) {
         html += '<div style="grid-column:1/-1;text-align:center;padding:var(--space-8);">' +
           '<p style="color:var(--color-text-muted);font-size:var(--text-body-lg);">No se encontraron refacciones.</p>' +

pos/templates/catalog.html

@@ -277,6 +277,7 @@
         <button onclick="BrandCatalog.hide()" class="btn btn--sm" style="background:none;border:1px solid var(--color-border);color:var(--color-text-primary);padding:8px 16px;border-radius:var(--radius-md);cursor:pointer;">&#10005; Cerrar</button>
       </div>
       <div id="brandCatalogBreadcrumb" style="margin-bottom:var(--space-3);color:var(--color-text-muted);font-size:var(--text-body-sm);"></div>
+      <div id="brandCatalogSearch" style="margin-bottom:var(--space-3);"></div>
       <div id="brandCatalogLoading" style="display:none;text-align:center;padding:var(--space-8);"><div class="spinner"></div></div>
       <div id="brandCatalogContent" style="display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--space-3);"></div>
     </div>
@@ -294,6 +295,6 @@
   <script src="/pos/static/js/onboarding.js" defer></script>
   <script>if('serviceWorker' in navigator){navigator.serviceWorker.register('/pos/sw.js',{scope:'/pos/'});}</script>
   <script src="/pos/static/js/pwa-install.js" defer></script>
-  <script src="/pos/static/js/brand-catalog.js?v=2" defer></script>
+  <script src="/pos/static/js/brand-catalog.js?v=3" defer></script>
 </body>
 </html>