fix(sdk): address codex review feedback on #136

- helper: open with newline="" so CRLF/CR line endings reach the server
  byte-faithful instead of being silently normalized to \n. Adds a
  regression test for a Windows-authored config (b"line1\r\nline2\r\n").
- example: ship examples/sdk/default.conf so create_inference.py runs
  as-is without the user having to discover and create an extra file
  (matches how create_inference_vllm.py ships vllm_config.yaml).

Signed-off-by: Honglin Cao <hocao@nvidia.com>

Author: V2arK

centml/sdk/utils/config_file.py

@@ -9,6 +9,8 @@
 # Field-level validation (size cap, filename charset, mount_path rules) is
 # left to the API so SDK doesn't drift when server limits change.
 def load_config_file_mount(path: str, mount_path: str, filename: Optional[str] = None) -> ConfigFileMount:
-    with open(path, "r", encoding="utf-8") as f:
+    # newline="" disables universal-newline translation so CRLF/CR line
+    # endings reach the server byte-faithful instead of being normalized to \n.
+    with open(path, "r", encoding="utf-8", newline="") as f:
         content = f.read()
     return ConfigFileMount(filename=filename or os.path.basename(path), mount_path=mount_path, content=content)

examples/sdk/default.conf

@@ -0,0 +1,7 @@
+server {
+    listen 8080;
+    location / {
+        return 200 "hello from config_file\n";
+        add_header Content-Type text/plain;
+    }
+}

tests/test_sdk_config_file_helper.py

@@ -39,3 +39,14 @@ def test_utf8_multibyte_content_roundtrips(tmp_path):
 def test_missing_file_raises_filenotfound(tmp_path):
     with pytest.raises(FileNotFoundError):
         load_config_file_mount(str(tmp_path / "does-not-exist.conf"), "/etc/x")
+
+
+def test_preserves_crlf_line_endings(tmp_path):
+    # Windows-authored configs use \r\n; the helper must not silently
+    # normalize them to \n when uploading to the server.
+    src = tmp_path / "windows.conf"
+    src.write_bytes(b"line1\r\nline2\r\n")
+
+    mount = load_config_file_mount(str(src), "/etc/app")
+
+    assert mount.content == "line1\r\nline2\r\n"