diff --git a/packaging/upload-release.sh b/packaging/upload-release.sh
new file mode 100755
index 0000000..1895789
--- /dev/null
+++ b/packaging/upload-release.sh
@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+# Upload release assets to a GitCode release.
+#
+# The endpoint shapes are asymmetric and both differ from the "obvious" guess:
+#
+#   GET  /releases/tags/{tag}            → read a release
+#   GET  /releases/{tag}/upload_url      → get a presigned PUT   (NO "tags/")
+#   PUT  {presigned url}                 → upload, REPLAYING the headers verbatim
+#
+# Two mistakes cost real time on v1.9.5 before this script existed:
+#
+#   1. POSTing straight to /releases/{tag}/assets returns 404 — that endpoint
+#      does not exist. It reads as "authentication failed" if you only check
+#      the status code.
+#   2. PUTting without the headers fails with an opaque storage error, not a
+#      permission one, so it looks like a size limit or a corrupt file.
+#
+# The x-obs-* headers are part of the signature: dropping any one of them turns
+# the request into an unsigned one.
+set -uo pipefail
+
+TOKEN="$(tr -d '\n\r' < /tmp/gc_token)"
+REPO="JianFeeeee/ModelRouter"
+TAG="${1:?usage: upload-release.sh <tag> <file>...}"
+shift
+
+API="https://gitcode.com/api/v5/repos/${REPO}"
+
+for f in "$@"; do
+  name="$(basename "$f")"
+  size="$(stat -c%s "$f")"
+  printf '  %-46s %10s bytes  ' "$name" "$size"
+
+  # 1) presigned upload location. The file name must be URL-encoded; the v1.9.4
+  #    assets show "~" surviving in a stored name, so encoding is per-component.
+  enc="$(python3 -c 'import urllib.parse,sys; print(urllib.parse.quote(sys.argv[1]))' "$name")"
+  resp="$(curl -sS -m 60 -H "Authorization: Bearer ${TOKEN}" \
+    "${API}/releases/${TAG}/upload_url?file_name=${enc}" 2>&1)"
+  url="$(printf '%s' "$resp" | python3 -c 'import json,sys
+try:
+    d = json.load(sys.stdin)
+    print(d.get("url") or d.get("uploadUrl") or "")
+except Exception:
+    print("")' 2>/dev/null)"
+  if [ -z "$url" ]; then
+    echo "✗ 取得上传地址失败: ${resp:0:140}"
+    continue
+  fi
+
+  # 2) PUT with the headers replayed exactly as returned.
+  code="$(printf '%s' "$resp" | python3 -c 'import json,sys
+try:
+    print(json.dumps(json.load(sys.stdin).get("headers") or {}))
+except Exception:
+    print("{}")' 2>/dev/null | python3 -c '
+import json, subprocess, sys
+headers = json.load(sys.stdin)
+args = ["curl", "-sS", "-o", "/dev/null", "-w", "%{http_code}", "-X", "PUT"]
+for k, v in headers.items():
+    args += ["-H", f"{k}: {v}"]
+args += ["--data-binary", "@" + sys.argv[1], sys.argv[2]]
+print(subprocess.run(args, capture_output=True, text=True).stdout)
+' "$f" "$url" 2>/dev/null)"
+
+  if [ "$code" = "200" ] || [ "$code" = "201" ] || [ "$code" = "204" ]; then
+    echo "✓ HTTP=$code"
+  else
+    echo "✗ HTTP=$code"
+  fi
+  sleep 1
+done