feat(pos): selector de vehiculo con dropdowns — Ano > Marca > Modelo > Motor

Barra de 4 dropdowns arriba del catalogo que se habilitan en cascada.
Al completar los 4, muestra categorias y partes para ese vehiculo.
Boton de limpiar para resetear. Endpoint /years-all para cargar anos.
Estilos con design system tokens (ambos temas).

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

pos/blueprints/catalog_bp.py

@@ -92,6 +92,19 @@ def years():
     return _master_only(_do)
 
 
+@catalog_bp.route('/years-all', methods=['GET'])
+@require_auth('catalog.view')
+def years_all():
+    """Get all available years (for vehicle selector dropdown)."""
+    def _do(master):
+        cur = master.cursor()
+        cur.execute("SELECT DISTINCT id_year, year_car FROM years ORDER BY year_car DESC")
+        rows = cur.fetchall()
+        cur.close()
+        return jsonify({'data': [{'id_year': r[0], 'year_car': r[1]} for r in rows]})
+    return _master_only(_do)
+
+
 @catalog_bp.route('/engines', methods=['GET'])
 @require_auth('catalog.view')
 def engines():

pos/static/js/catalog.js

@@ -816,6 +816,138 @@
         }
     });
 
+    // ─── VEHICLE SELECTOR (dropdown bar) ───
+    var vsYear = document.getElementById('vsYear');
+    var vsBrand = document.getElementById('vsBrand');
+    var vsModel = document.getElementById('vsModel');
+    var vsEngine = document.getElementById('vsEngine');
+    var vsClear = document.getElementById('vsClear');
+
+    // Load years on init
+    function vsLoadYears() {
+        apiFetch(API + '/years-all').then(function (data) {
+            if (!data) return;
+            var years = data.data || data;
+            // If endpoint doesn't exist, generate from 1990-2026
+            if (!years || !years.length) {
+                years = [];
+                for (var y = 2026; y >= 1990; y--) years.push({ id_year: y, year_car: y });
+            }
+            vsYear.innerHTML = '<option value="">Año...</option>';
+            years.forEach(function (y) {
+                vsYear.innerHTML += '<option value="' + y.id_year + '">' + y.year_car + '</option>';
+            });
+        }).catch(function () {
+            // Fallback: generate years statically
+            vsYear.innerHTML = '<option value="">Año...</option>';
+            for (var y = 2026; y >= 1990; y--) {
+                vsYear.innerHTML += '<option value="' + y + '">' + y + '</option>';
+            }
+        });
+    }
+
+    function vsYearChanged() {
+        var yearId = vsYear.value;
+        vsBrand.innerHTML = '<option value="">Marca...</option>';
+        vsModel.innerHTML = '<option value="">Modelo...</option>';
+        vsEngine.innerHTML = '<option value="">Motor...</option>';
+        vsBrand.disabled = true;
+        vsModel.disabled = true;
+        vsEngine.disabled = true;
+        vsClear.style.display = yearId ? '' : 'none';
+
+        if (!yearId) return;
+
+        // Load brands (reuse existing endpoint)
+        vsBrand.disabled = false;
+        apiFetch(API + '/brands').then(function (data) {
+            var brands = data.data || data;
+            if (!brands) return;
+            vsBrand.innerHTML = '<option value="">Marca...</option>';
+            brands.forEach(function (b) {
+                vsBrand.innerHTML += '<option value="' + b.id_brand + '">' + esc(b.name_brand) + '</option>';
+            });
+        });
+    }
+
+    function vsBrandChanged() {
+        var brandId = vsBrand.value;
+        vsModel.innerHTML = '<option value="">Modelo...</option>';
+        vsEngine.innerHTML = '<option value="">Motor...</option>';
+        vsModel.disabled = true;
+        vsEngine.disabled = true;
+
+        if (!brandId) return;
+
+        vsModel.disabled = false;
+        apiFetch(API + '/models?brand_id=' + brandId).then(function (data) {
+            var models = data.data || data;
+            if (!models) return;
+            vsModel.innerHTML = '<option value="">Modelo...</option>';
+            models.forEach(function (m) {
+                vsModel.innerHTML += '<option value="' + m.id_model + '">' + esc(m.name_model) + '</option>';
+            });
+        });
+    }
+
+    function vsModelChanged() {
+        var modelId = vsModel.value;
+        var yearVal = vsYear.value;
+        vsEngine.innerHTML = '<option value="">Motor...</option>';
+        vsEngine.disabled = true;
+
+        if (!modelId || !yearVal) return;
+
+        vsEngine.disabled = false;
+        apiFetch(API + '/engines?model_id=' + modelId + '&year_id=' + yearVal).then(function (data) {
+            var engines = data.data || data;
+            if (!engines) return;
+            vsEngine.innerHTML = '<option value="">Motor...</option>';
+            engines.forEach(function (e) {
+                var label = e.name_engine + (e.trim_level ? ' (' + e.trim_level + ')' : '');
+                vsEngine.innerHTML += '<option value="' + e.id_mye + '">' + esc(label) + '</option>';
+            });
+            // If only 1 engine, auto-select
+            if (engines.length === 1) {
+                vsEngine.value = engines[0].id_mye;
+                vsEngineChanged();
+            }
+        });
+    }
+
+    function vsEngineChanged() {
+        var myeId = vsEngine.value;
+        if (!myeId) return;
+
+        // Update state and load categories
+        var yearText = vsYear.options[vsYear.selectedIndex].text;
+        var brandText = vsBrand.options[vsBrand.selectedIndex].text;
+        var modelText = vsModel.options[vsModel.selectedIndex].text;
+        var engineText = vsEngine.options[vsEngine.selectedIndex].text;
+
+        state.brand = { id: parseInt(vsBrand.value), name: brandText };
+        state.model = { id: parseInt(vsModel.value), name: modelText };
+        state.year = { id: parseInt(vsYear.value), value: yearText };
+        state.engine = { id_mye: parseInt(myeId), name: engineText };
+        state.level = 'categories';
+
+        loadCategories();
+    }
+
+    function vsClearAll() {
+        vsYear.value = '';
+        vsBrand.innerHTML = '<option value="">Marca...</option>';
+        vsModel.innerHTML = '<option value="">Modelo...</option>';
+        vsEngine.innerHTML = '<option value="">Motor...</option>';
+        vsBrand.disabled = true;
+        vsModel.disabled = true;
+        vsEngine.disabled = true;
+        vsClear.style.display = 'none';
+
+        state = { level: 'brands', brand: null, model: null, year: null, engine: null, category: null, group: null, page: 1, totalPages: 1 };
+        loadBrands();
+    }
+
     // ─── EXPOSE GLOBALS (for backward compat) ───
     window.CatalogApp = {
         toggleCart: toggleCart,
@@ -825,10 +957,16 @@
         updateQty: updateQuantity,
         clearCart: clearCart,
         loadPage: function (p) { loadParts(p); },
+        vsYearChanged: vsYearChanged,
+        vsBrandChanged: vsBrandChanged,
+        vsModelChanged: vsModelChanged,
+        vsEngineChanged: vsEngineChanged,
+        vsClear: vsClearAll,
     };
 
     // ─── INIT ───
     renderCart();
+    vsLoadYears();
     loadBrands();
 
 })();

pos/templates/catalog.html

@@ -433,12 +433,70 @@
        RESPONSIVE
        ========================================================================= */
 
+    /* ── Vehicle Selector ── */
+    .vehicle-selector {
+      background: var(--color-bg-elevated);
+      border-bottom: 2px solid var(--color-primary-muted, rgba(245,166,35,0.2));
+      padding: var(--space-3) var(--space-5);
+      flex-shrink: 0;
+    }
+    .vehicle-selector__inner {
+      display: flex;
+      align-items: flex-end;
+      gap: var(--space-3);
+      flex-wrap: wrap;
+    }
+    .vs-group { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 140px; }
+    .vs-label {
+      font-size: var(--text-caption, 0.75rem);
+      font-weight: var(--font-weight-semibold, 600);
+      color: var(--color-text-muted);
+      text-transform: uppercase;
+      letter-spacing: var(--tracking-wider, 0.04em);
+    }
+    .vs-select {
+      padding: var(--space-2) var(--space-3);
+      background: var(--color-bg-base);
+      color: var(--color-text-primary);
+      border: 1px solid var(--color-border);
+      font-family: var(--font-body);
+      font-size: var(--text-body-sm, 0.875rem);
+      cursor: pointer;
+      transition: var(--transition-fast);
+      appearance: auto;
+    }
+    [data-theme="industrial"] .vs-select { border-radius: 0; }
+    [data-theme="modern"] .vs-select { border-radius: var(--radius-md); }
+    .vs-select:focus { border-color: var(--color-primary); outline: none; box-shadow: var(--shadow-focus); }
+    .vs-select:disabled { opacity: 0.4; cursor: not-allowed; }
+    .vs-arrow {
+      color: var(--color-primary);
+      font-size: 1.4rem;
+      font-weight: 700;
+      padding-bottom: 6px;
+      flex-shrink: 0;
+    }
+    .vs-clear {
+      background: none;
+      border: 1px solid var(--color-border);
+      color: var(--color-text-muted);
+      padding: var(--space-2) var(--space-3);
+      cursor: pointer;
+      font-size: 1rem;
+      transition: var(--transition-fast);
+    }
+    [data-theme="industrial"] .vs-clear { border-radius: 0; }
+    [data-theme="modern"] .vs-clear { border-radius: var(--radius-md); }
+    .vs-clear:hover { color: var(--color-error); border-color: var(--color-error); }
+
     @media (max-width: 768px) {
       .sidebar { position: fixed; left: -260px; z-index: var(--z-modal); transition: left var(--duration-normal) var(--ease-in-out); height: 100vh; }
       .sidebar.is-open { left: 0; }
       .search-bar { width: 200px; }
       .detail-panel { width: 100%; }
       .nav-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
+      .vehicle-selector__inner { flex-direction: column; }
+      .vs-arrow { display: none; }
     }
   </style>
 </head>
@@ -540,6 +598,40 @@
         </div>
       </header>
 
+      <!-- Vehicle selector bar -->
+      <div class="vehicle-selector" id="vehicleSelector">
+        <div class="vehicle-selector__inner">
+          <div class="vs-group">
+            <label class="vs-label">Año</label>
+            <select class="vs-select" id="vsYear" onchange="CatalogApp.vsYearChanged()">
+              <option value="">Seleccionar...</option>
+            </select>
+          </div>
+          <div class="vs-arrow">›</div>
+          <div class="vs-group">
+            <label class="vs-label">Marca</label>
+            <select class="vs-select" id="vsBrand" disabled onchange="CatalogApp.vsBrandChanged()">
+              <option value="">Seleccionar...</option>
+            </select>
+          </div>
+          <div class="vs-arrow">›</div>
+          <div class="vs-group">
+            <label class="vs-label">Modelo</label>
+            <select class="vs-select" id="vsModel" disabled onchange="CatalogApp.vsModelChanged()">
+              <option value="">Seleccionar...</option>
+            </select>
+          </div>
+          <div class="vs-arrow">›</div>
+          <div class="vs-group">
+            <label class="vs-label">Motor</label>
+            <select class="vs-select" id="vsEngine" disabled onchange="CatalogApp.vsEngineChanged()">
+              <option value="">Seleccionar...</option>
+            </select>
+          </div>
+          <button class="vs-clear" id="vsClear" onclick="CatalogApp.vsClear()" title="Limpiar seleccion" style="display:none;">✕</button>
+        </div>
+      </div>
+
       <!-- Scrollable page body -->
       <div class="page-body" id="pageBody">