Ignore blank HYPERBROWSER_HEADERS environment values

Co-authored-by: Shri Sukhani <shrisukhani@users.noreply.github.com>

Author: cursoragent

hyperbrowser/config.py

@@ -52,7 +52,7 @@ def from_env(cls) -> "ClientConfig":
         )
         headers = None
         raw_headers = os.environ.get("HYPERBROWSER_HEADERS")
-        if raw_headers:
+        if raw_headers is not None and raw_headers.strip():
             try:
                 parsed_headers = json.loads(raw_headers)
             except json.JSONDecodeError as exc:

tests/test_config.py

@@ -62,6 +62,15 @@ def test_client_config_from_env_rejects_non_object_headers_json(monkeypatch):
         ClientConfig.from_env()
 
 
+def test_client_config_from_env_ignores_blank_headers(monkeypatch):
+    monkeypatch.setenv("HYPERBROWSER_API_KEY", "test-key")
+    monkeypatch.setenv("HYPERBROWSER_HEADERS", "   ")
+
+    config = ClientConfig.from_env()
+
+    assert config.headers is None
+
+
 def test_client_config_from_env_normalizes_base_url(monkeypatch):
     monkeypatch.setenv("HYPERBROWSER_API_KEY", "test-key")
     monkeypatch.setenv("HYPERBROWSER_BASE_URL", " https://example.local/ ")