feat(config): start using outputFileUrlType website on previews

[anna-parker]

follow up to #7289

🚀 Preview: https://outputfileurltype-website.loculus.org

[claude]

Claude finished @anna-parker's task in 2m 13s —— View job

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Review

One-line config flip. Left one inline comment on values.yaml:64.

Main point: the change is in kubernetes/loculus/values.yaml, which is the chart-wide default, not preview-scoped — despite the PR title. Preview-only config belongs in values_preview_server.yaml.

Things I checked that look fine:

• The website route exists and matches the URL the backend builds (ReleasedDataModel.kt:255 → website/src/pages/seq/[accessionVersion]/[fileCategory]/[fileName].ts), including the logged-out 401 fix from fix(website): Fix outputFileUrlType: website file URLs resulting in 401 for logged out users #7289.
• No bandwidth concern: /files/get always returns a 307 to a presigned S3 URL (FilesController.kt:101), and the website route forwards the Location rather than streaming bytes through Astro.
• The website config also receives fileSharing (_common-metadata.tpl:243), but fileSharingConfig (website/src/types/config.ts:240) is a non-strict zod object, so the extra outputFileUrlType key is stripped — no validation failure.
• No test hardcodes the URL shape (integration-tests/tests/specs/features/file-sharing.spec.ts), so e2e should pass, and since values_e2e_and_dev.yaml doesn't override this, CI now actually exercises the website path.

Minor: outputFileUrlType is a required field in values.schema.json but isn't mentioned anywhere in docs/. If the shipped default is changing, a line in the admin docs explaining the three modes would help chart consumers.

_{Todos: - [x] Gather context - [x] Analyze semantics/downstream effects - [x] Check preview vs. chart-wide scope - [x] Post review}
· branch outputFileUrlType-website

[tombch]

The integration tests seem to be showing a CORS issue

(I am having a look with claude)

[tombch]

I did just test making a dummy submission with files though and it seems to work!