Software upload error message is different across web browsers

[xpkoala]

Fleet versions

• Discovered: v4.83.0 RC
• Reproduced: v4.82.2

Web browser and operating system: Safari 26.0.1

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💥  Actual behavior

Error banner missing information when a software upload exceeds pre-set limit.

🛠️ Expected behavior

Add max_software_package_size to the GET /config endpoint. The frontend should show an error before the user tries to upload a file if it exceeds the allowed size.

🧑‍💻  Steps to reproduce

These steps:

• Have been confirmed to consistently lead to reproduction in multiple Fleet instances.

1. With FLEET_SERVER_MAX_INSTALLER_SIZE=1GiB
2. Attempt to upload software to a team that exceeds this threshold
3. An error toast will generate but it will be missing information.

🕯️ More info (optional)

Safari

Chrome