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(headers.get(\"set-cookie\") ? [headers.get(\"set-cookie\")!] : []);\n return all.map((s) => s.split(\";\", 1)[0]).filter(Boolean).join(\"; \");\n}\nfunction mergeCookies(a: string, b: string): string {\n const m = new Map();\n for (const c of [a, b]) for (const part of c.split(/;\\s*/)) {\n const i = part.indexOf(\"=\"); if (i > 0) m.set(part.slice(0, i), part.slice(i + 1));\n }\n return [...m].map(([k, v]) => `${k}=${v}`).join(\"; \");\n}\nasync function qFetch(url: string, init: RequestInit = {}, cookie = \"\") {\n const headers = new Headers(init.headers);\n headers.set(\"user-agent\", UA);\n headers.set(\"accept-language\", \"ko-KR,ko;q=0.9\");\n if (cookie) headers.set(\"cookie\", cookie);\n const res = await fetch(url, { ...init, headers, redirect: \"follow\" });\n return { res, cookie: mergeCookies(cookie, cookieLine(res.headers)) };\n}\nasync function verify(label: string, url: string, bytes: Uint8Array) {\n const digest = await sha256(bytes);\n return {\n label, url, bytes: bytes.byteLength, sha256: digest, zip_like: zipLike(bytes),\n exact_size: bytes.byteLength === TARGET.bytes,\n exact_sha256: digest === TARGET.sha256,\n exact: bytes.byteLength === TARGET.bytes && digest === TARGET.sha256 && zipLike(bytes),\n };\n}\nfunction u16(b: Uint8Array, o: number) { return b[o] | (b[o + 1] << 8); }\nfunction u32(b: Uint8Array, o: number) {\n return (b[o] | (b[o + 1] << 8) | (b[o + 2] << 16) | (b[o + 3] << 24)) >>> 0;\n}\nfunction decodeName(bytes: Uint8Array, utf8: boolean): string {\n try { return new TextDecoder(utf8 ? \"utf-8\" : \"euc-kr\").decode(bytes); }\n catch { return new TextDecoder(\"utf-8\").decode(bytes); }\n}\nfunction listZipMembers(b: Uint8Array) {\n const min = Math.max(0, b.length - 65_557);\n let eocd = -1;\n for (let i = b.length - 22; i >= min; i--) {\n if (b[i] === 0x50 && b[i+1] === 0x4b && b[i+2] === 0x05 && b[i+3] === 0x06) { eocd = i; break; }\n }\n if (eocd < 0) throw new Error(\"EOCD not found\");\n const entries = u16(b, eocd + 10);\n const cdSize = u32(b, eocd + 12);\n const cdOffset = u32(b, eocd + 16);\n const out: any[] = [];\n let p = cdOffset;\n for (let n = 0; n < entries; n++) {\n if (!(b[p]===0x50 && b[p+1]===0x4b && b[p+2]===0x01 && b[p+3]===0x02)) {\n throw new Error(`central directory signature missing at entry ${n} offset ${p}`);\n }\n const flags = u16(b,p+8);\n const method = u16(b,p+10);\n const crc32 = u32(b,p+16).toString(16).padStart(8,\"0\");\n const compressed = u32(b,p+20);\n const uncompressed = u32(b,p+24);\n const nameLen = u16(b,p+28), extraLen=u16(b,p+30), commentLen=u16(b,p+32);\n const localOffset = u32(b,p+42);\n const nameBytes=b.slice(p+46,p+46+nameLen);\n const name=decodeName(nameBytes, Boolean(flags & 0x800));\n out.push({index:n+1,name,method,compressed,uncompressed,crc32,local_offset:localOffset});\n p += 46 + nameLen + extraLen + commentLen;\n }\n return {entries, cd_size:cdSize, cd_offset:cdOffset, members:out};\n}\nasync function fetchQNet() {\n let cookie = \"\";\n let x = await qFetch(`${QBASE}/man001.do?gSite=L&gId=51`, {}, cookie); cookie = x.cookie;\n const detailUrl = `${QBASE}/cst003.do?id=cst00302&gSite=L&gId=51`;\n const form = new URLSearchParams({\n page:\"1\", schType:\"\", schText:\"\", artlSeq:TARGET.artlSeq,\n boardId:\"Q004\", code:\"1008\", menuType:\"cst00309\", cst:\"\",\n });\n x = await qFetch(detailUrl, {\n method:\"POST\", body:form,\n headers:{\"content-type\":\"application/x-www-form-urlencoded\", referer:detailUrl},\n }, cookie); cookie=x.cookie;\n if (!x.res.ok) throw new Error(`Q-Net detail HTTP ${x.res.status}`);\n const detail=await x.res.text();\n const candidates:any[]=[];\n const re=/fileDown\$'([^']+)'\\s*,\\s*'([^']+)'\\s*,\\s*'(\\d+)'\$/g;\n for (const m of detail.matchAll(re)) candidates.push({filePath:m[1],fileName:m[2],fileSeq:m[3]});\n let resolved=candidates.find((z)=>z.fileSeq===TARGET.fileSeq) ??\n candidates.find((z)=>z.fileName.includes(\"57회\") && z.fileName.toLowerCase().includes(\"zip\")) ??\n {filePath:TARGET.filePath,fileName:TARGET.filename,fileSeq:TARGET.fileSeq};\n const q = new URLSearchParams({\n id:\"cst00302s01\", gSite:\"L\", gId:\"51\", fileCode:\"R001\",\n filePath:resolved.filePath, fileName:resolved.fileName, fileSeq:resolved.fileSeq,\n artlSeq:TARGET.artlSeq, href:\"0\",\n });\n const dl=`${QBASE}/cst003.do?${q.toString()}`;\n x=await qFetch(dl,{headers:{referer:detailUrl,accept:\"application/zip,application/octet-stream,*/*;q=0.8\"}},cookie);\n if(!x.res.ok) throw new Error(`Q-Net attachment HTTP ${x.res.status}`);\n const bytes=new Uint8Array(await x.res.arrayBuffer());\n return {bytes,audit:await verify(\"qnet_official_session\",x.res.url||dl,bytes),resolved,candidates};\n}\nasync function acquire() {\n const attempts:any[]=[];\n try {\n const got=await fetchQNet();\n attempts.push(got.audit);\n if(!got.audit.exact) return {ok:false,attempts,resolved:got.resolved,candidates:got.candidates};\n await blob.set(KEY,got.bytes);\n const 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