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/static/js/catalog.js

@@ -1019,6 +1019,75 @@
         });
     }
 
+    // ─── PLATE LOOKUP ───
+    var plateInputWrap = document.getElementById('plateInputWrap');
+    var plateInput = document.getElementById('plateInput');
+    var plateStatus = document.getElementById('plateStatus');
+    var plateToggle = document.getElementById('plateToggle');
+
+    function togglePlate() {
+        var isVisible = plateInputWrap.style.display !== 'none';
+        plateInputWrap.style.display = isVisible ? 'none' : '';
+        plateToggle.textContent = isVisible ? 'Tienes las placas?' : 'Ocultar placas';
+        if (!isVisible && plateInput) plateInput.focus();
+    }
+
+    function showPlateStatus(msg, isError) {
+        plateStatus.style.display = msg ? '' : 'none';
+        plateStatus.textContent = msg;
+        plateStatus.style.color = isError ? 'var(--color-error)' : 'var(--color-text-muted)';
+    }
+
+    function lookupPlate() {
+        var plate = (plateInput.value || '').trim().toUpperCase();
+        if (!plate || plate.length < 5) {
+            showPlateStatus('Ingresa una placa valida (Ej: ABC-1234).', true);
+            return;
+        }
+        showPlateStatus('Buscando placa...', false);
+
+        apiFetch(API + '/plate/' + encodeURIComponent(plate)).then(function (data) {
+            if (!data) {
+                showPlateStatus('Error de conexion al buscar placa.', true);
+                return;
+            }
+            if (data.error) {
+                showPlateStatus(data.error, true);
+                return;
+            }
+            if (!data.found) {
+                plateStatus.style.display = '';
+                plateStatus.innerHTML = 'Placa no registrada. <a href="/pos/customers" style="color:var(--color-primary);">Registrar vehiculo</a>';
+                plateStatus.style.color = 'var(--color-warning, #e6a700)';
+                return;
+            }
+
+            var parts = [];
+            if (data.year) parts.push(data.year);
+            if (data.make) parts.push(data.make);
+            if (data.model) parts.push(data.model);
+            var label = parts.join(' ') || 'Vehiculo encontrado';
+
+            // If we got a catalog match, auto-fill the dropdowns
+            var match = data.catalog_match;
+            if (match && match.brand_id) {
+                showPlateStatus(label + ' — Cargando catalogo...', false);
+                _autoFillFromVin(match, data);
+            } else {
+                showPlateStatus(label + ' — No encontrado en el catalogo TecDoc.', false);
+            }
+        });
+    }
+
+    if (plateInput) {
+        plateInput.addEventListener('keydown', function (e) {
+            if (e.key === 'Enter') {
+                e.preventDefault();
+                lookupPlate();
+            }
+        });
+    }
+
     // ─── VIN DECODER ───
     var vinInputWrap = document.getElementById('vinInputWrap');
     var vinInput = document.getElementById('vinInput');
@@ -1160,6 +1229,8 @@
         startBarcodeScan: startBarcodeScan,
         toggleVin: toggleVin,
         decodeVin: decodeVin,
+        togglePlate: togglePlate,
+        lookupPlate: lookupPlate,
     };
 
     // ─── INIT ───