kolaente 8bec654595 refactor(background): extract download + unsplash-proxy logic for reuse ...

Split the HTTP plumbing from the business logic in the v1 project-background
download and Unsplash image proxy handlers so /api/v2 can reuse it without
duplicating it:

- LoadProjectBackgroundForDownload (background/handler) loads the bg file +
  modtime and fires the Unsplash pingback; GetProjectBackground now calls it.
- WriteProjectBackground (web/files) writes v1's exact background wire shape
  (image/jpg, no-cache, stat-modtime Last-Modified, If-Modified-Since 304).
- FetchUnsplashImageByID / FetchUnsplashThumbByID (background/unsplash) return
  the open upstream body for the caller to stream; the v1 proxy handlers now
  call them. A typed ErrUnsplashImageDoesNotExist maps to 404 on both APIs.
- ErrProjectHasNoBackground (models) gives the no-background case a domain
  error; v1 keeps its verbatim 404 message.

v1 responses are unchanged on the wire.

2026-06-17 11:31:50 +00:00

..

background.go

refactor(background): extract download + unsplash-proxy logic for reuse

2026-06-17 11:31:50 +00:00

errors.go

refactor(background): share upload validation between v1 and v2 handlers

2026-06-12 08:47:08 +00:00