fix: revert old oauth behavior and new default email provider

scripts/run_token_refresh_flow.py

@@ -0,0 +1,55 @@
+import argparse
+import asyncio
+import json
+import logging
+
+import browser
+import server
+
+
+class _FakeRequest:
+    def __init__(self, provider: str):
+        self.match_info = {"provider": provider}
+        self.method = "GET"
+        self.path_qs = f"/{provider}/token"
+
+
+def _enable_headed_browser() -> bool:
+    if "--no-startup-window" in browser.CHROME_FLAGS:
+        browser.CHROME_FLAGS.remove("--no-startup-window")
+        return True
+    return False
+
+
+async def _run(provider: str) -> int:
+    patched = _enable_headed_browser()
+    logging.info("Headed mode patch applied: %s", patched)
+
+    request = _FakeRequest(provider)
+    response = await server.token_handler(request)
+    payload = json.loads(response.body.decode("utf-8"))
+
+    logging.info("Response status: %s", response.status)
+    logging.info("Response body: %s", json.dumps(payload, indent=2))
+    return 0 if response.status == 200 else 1
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(
+        description=(
+            "Run the same token refresh/issue flow as server /{provider}/token "
+            "in headed browser mode (non-headless)."
+        )
+    )
+    parser.add_argument("--provider", default="chatgpt")
+    args = parser.parse_args()
+
+    logging.basicConfig(
+        level=logging.INFO,
+        format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    )
+    return asyncio.run(_run(args.provider))
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())