Normalize URL path joining in client base

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

Author: cursoragent

hyperbrowser/client/base.py

@@ -48,4 +48,5 @@ def __init__(
         self.transport = transport(config.api_key, headers=config.headers)
 
     def _build_url(self, path: str) -> str:
-        return f"{self.config.base_url}/api{path}"
+        normalized_path = path if path.startswith("/") else f"/{path}"
+        return f"{self.config.base_url}/api{normalized_path}"

tests/test_url_building.py

@@ -0,0 +1,21 @@
+from hyperbrowser import Hyperbrowser
+from hyperbrowser.config import ClientConfig
+
+
+def test_client_build_url_normalizes_leading_slash():
+    client = Hyperbrowser(config=ClientConfig(api_key="test-key"))
+    try:
+        assert client._build_url("/session") == "https://api.hyperbrowser.ai/api/session"
+        assert client._build_url("session") == "https://api.hyperbrowser.ai/api/session"
+    finally:
+        client.close()
+
+
+def test_client_build_url_uses_normalized_base_url():
+    client = Hyperbrowser(
+        config=ClientConfig(api_key="test-key", base_url="https://example.local/")
+    )
+    try:
+        assert client._build_url("/session") == "https://example.local/api/session"
+    finally:
+        client.close()