[Bug]: Passthrough header parameters not persisted to database

[ankit-gajera-merck]

🐞 Bug Summary

Despite setting ENABLE_HEADER_PASSTHROUGH=true in the environment (e.g., .env), passthrough header parameters are not being saved in the database.

🧩 Affected Component

Select the area of the project impacted:

• mcpgateway - API
• mcpgateway - UI (admin panel)
• mcpgateway.wrapper - stdio wrapper
• Federation or Transports
• CLI, Makefiles, or shell scripts
• Container setup (Docker/Podman/Compose)
• Other (explain below)

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🔁 Steps to Reproduce

1. Clone the repo and checkout tag v0.6.0.
2. In your .env configuration, set:

   ENABLE_HEADER_PASSTHROUGH=true

3. Launch the server and open the Admin UI.
4. Create a gateway with Passthrough Headers: email, authorization.
5. After the gateway is successfully added, click Edit—the Passthrough Headers field is empty.
6. In the database, within the gateways table, check the passthrough_headers column for this gateway—it is NULL.

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🤔 Expected Behavior

After the gateway is successfully added, click Edit—the Passthrough Headers field should be filled with added header keys.
By adding them in the database directly as ["email", "authorization"], it is showing as expected.

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📓 Logs / Error Output

Couldn't see any error logs in the console.

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🧠 Environment Info

You can retrieve most of this from the /version endpoint.

Key	Value
Version or commit	0.6.0
Runtime	Python 3.12, Gunicorn
Platform / OS	AWS Amazon Linux 2
Container	none

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[crivetimihai]

Hi, I believe this is resolved in main by #736

[crivetimihai]

I believe this is resolved - closing.