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\"\"));\n rows.push(row);\n }\n return rows;\n}\n\nasync function loadStaticData(): Promise<{\n routeMap: Record;\n stopCodeToId: Record;\n}> {\n try {\n const cached = await blob.getJSON(CACHE_KEY) as\n | {\n routeMap: Record;\n stopCodeToId: Record;\n fetchedAt: number;\n }\n | undefined;\n if (cached && Date.now() - cached.fetchedAt < CACHE_HOURS * 3600 * 1000) {\n return { routeMap: cached.routeMap, stopCodeToId: cached.stopCodeToId };\n }\n } catch {\n // no cache yet\n }\n\n const res = await fetch(STATIC_GTFS_URL);\n if (!res.ok) throw new Error(`Static GTFS fetch failed: ${res.status}`);\n const buf = await res.arrayBuffer();\n const zip = await JSZip.loadAsync(buf);\n\n // Routes: route_id -> route_short_name\n const routesFile = zip.file(\"routes.txt\");\n if (!routesFile) throw new Error(\"routes.txt not found\");\n const routesText = await routesFile.async(\"text\");\n const routeMap: Record = {};\n for (const row of parseCsvFile(routesText)) {\n if (row.route_id) {\n routeMap[row.route_id] = row.route_short_name ?? 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