feat(map): cache and search reference stations

infra/deploy-runner/build-map-gateway-artifact.mjs

@@ -8,7 +8,7 @@ import { fileURLToPath } from "node:url";
 
 const scriptDir = dirname(fileURLToPath(import.meta.url));
 const platformRoot = resolve(scriptDir, "../..");
-const artifactDir = resolve(scriptDir, "../deploy-artifacts");
+const artifactDir = resolve(process.env.NODEDC_DEPLOY_ARTIFACT_DIR || resolve(scriptDir, "../deploy-artifacts"));
 const [patchId = "platform-map-gateway-20260714-001", ...extra] = process.argv.slice(2);
 if (extra.length || !/^[A-Za-z0-9._-]{1,96}$/.test(patchId)) throw new Error("usage: build-map-gateway-artifact.mjs [patch-id]");
 
@@ -27,13 +27,32 @@ try {
   await writeFile(join(stage, "manifest.env"), `id=${patchId}\ncomponent=platform\ntype=app-overlay\n`, "utf8");
   await writeFile(join(stage, "files.txt"), `${files.map(([, destination]) => destination).join("\n")}\n`, "utf8");
   await mkdir(artifactDir, { recursive: true });
-  const tar = spawnSync("python3", ["-c", "import sys,tarfile\nwith tarfile.open(sys.argv[1],'w:gz',format=tarfile.PAX_FORMAT) as a:\n [a.add(n,arcname=n,recursive=True) for n in ('manifest.env','files.txt','payload')]", target], { cwd: stage, encoding: "utf8" });
+  const tar = spawnSync("python3", ["-c", canonicalTarScript(), target, stage], {
+    encoding: "utf8",
+    maxBuffer: 128 * 1024 * 1024,
+  });
   if (tar.status !== 0) throw new Error(`tar_failed:${tar.stderr || tar.stdout}`);
   console.log(JSON.stringify({ ok: true, patchId, artifact: target, sha256: createHash("sha256").update(await readFile(target)).digest("hex") }, null, 2));
 } finally {
   await rm(stage, { recursive: true, force: true });
 }
 
+function canonicalTarScript() {
+  return [
+    "import gzip,io,pathlib,sys,tarfile",
+    "root=pathlib.Path(sys.argv[2])",
+    "with open(sys.argv[1],'wb') as out:",
+    " with gzip.GzipFile(filename='',mode='wb',fileobj=out,compresslevel=9,mtime=0) as gz:",
+    "  with tarfile.open(fileobj=gz,mode='w',format=tarfile.PAX_FORMAT) as tar:",
+    "   for top in ('manifest.env','files.txt','payload'):",
+    "    p=root/top; paths=[p]+(sorted(p.rglob('*')) if p.is_dir() else [])",
+    "    for x in paths:",
+    "     info=tar.gettarinfo(str(x),arcname=x.relative_to(root).as_posix())",
+    "     info.uid=info.gid=0; info.uname=info.gname='root'; info.mtime=0; info.mode=0o755 if info.isdir() else 0o644",
+    "     with (open(x,'rb') if info.isfile() else io.BytesIO()) as src: tar.addfile(info,src if info.isfile() else None)",
+  ].join("\n");
+}
+
 async function copySafe(source, destination) {
   const info = await lstat(source);
   if (info.isSymbolicLink()) throw new Error(`source_symlink_rejected:${source}`);