feat(mileage): add brand multi-select filter and customer fuzzy search

- Add brand multi-select filter (BatchMultiSelect) with 17 brand options
- Replace customer select with SearchableSelect for fuzzy search
- Server-side: add brand to vehicle-info SQL, cache, filters, and monitoring
- Customer filter now uses case-insensitive includes match on server side
- Add brand column to fullscreen table header and body
- Mobile-adaptive: compact inputs, constrained widths, scrollable dropdowns
- Bump version to 1.1.8

src/server/routes/mileage/cache.ts

@@ -37,6 +37,7 @@ function buildFilters(vehicles: CachedVehicle[], targetNames: string[]): Monitor
   const projects = Array.from(new Set(vehicles.map(v => v.project).filter((p): p is string => p !== null)));
   const entities = Array.from(new Set(vehicles.map(v => v.entity).filter((e): e is string => e !== null)));
   const rentStatuses = Array.from(new Set(vehicles.map(v => v.rentStatus).filter((r): r is string => r !== null)));
+  const brands = Array.from(new Set(vehicles.map(v => v.brand).filter((b): b is string => b !== null))).sort();
 
   const prefixCount = new Map<string, number>();
   for (const v of vehicles) {
@@ -54,7 +55,7 @@ function buildFilters(vehicles: CachedVehicle[], targetNames: string[]): Monitor
     return (ai === -1 ? 99 : ai) - (bi === -1 ? 99 : bi);
   });
 
-  return { departments, customers, plates, projects, entities, rentStatuses, platePrefixes, targetNames, regions };
+  return { departments, customers, plates, projects, entities, rentStatuses, platePrefixes, targetNames, regions, brands };
 }
 
 interface MileageRow {
@@ -199,6 +200,7 @@ function mergeVehicles(
       entity: info.entity || null,
       project: info.project || null,
       region: regionMap[plate] || null,
+      brand: info.brand_label || null,
       targetNames: targetNamesByPlate.get(plate) || [],
       yesterdayKm: yesterdayMap.get(plate) || 0,
     };