HTTP 408 when saving an edited attachment

[davidandreoletti]

Describe the bug.
With v2.5:

• reading IC components pages work fine (HTTP 200, content is displayed on the page, HTTP request-response round trip is fast)
• saving an edited attachment from any IC component page always fails due to the browser receives HTTP 408.
  • All subsequent attempt to load/reload the page fails (might be my proxy).
• creating new parts always fails due to browser receiving HTTP 408.

To Reproduce (while editing an IC component)
Steps to reproduce the behavior:

1. Assume you have a part created (eg: NE555) with 5 "url to images" as attachments.
2. Click on the part
3. Select Tools > Edit Part
4. Delete the last attachment
5. Press Save Changes

=> Observe the Safari Inspector the page is stuck until the browser receives HTTP 408

=> Observe the PartDB server initiated the HTTP 408 (behind an Envoy-Gateway proxy)

Expected behavior
Saving an edited attachment succeeds and no HTTP 408 is returned to the browser.

Screenshots
NA

Server Side

• Part-DB Version: 2.5.0
• PHP Version: 8.4.17
• Database Server: sqlite 3.40.1

Desktop (please complete the following information):

• OS: macOS 15.7
• Browser: Safari
• Version: 26.2

Smartphone (please complete the following information):
NA

Additional context
NA

[davidandreoletti]

The web apps consistently returns HTTP 408 about 10s after the "create part/save part" button is pressed.

@jbtronics What are the partdb (or apache or anything) timeout values current set at involved in HTTP 408 failure ?