feat(ui-debug): hide the view for study without filesystem storage

[skamril]

ANT-5111

[Copilot]

Pull request overview

This PR (ANT-5111) adds study storage-mode awareness to the webapp so the Debug explore view is hidden (and the route is blocked) for studies that are not stored on the filesystem.

Changes:

• Extend StudyMetadata with a storageMode field and populate it from the DTO (storage_mode).
• Hide the Debug tab in the explore layout unless storageMode is "filesystem".
• Add a runtime guard in the debug route component to prevent access when storage mode is not filesystem.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
webapp/src/types/types.ts	Adds storageMode: StorageMode to StudyMetadata so UI can branch on storage backend.
webapp/src/services/utils/index.ts	Maps storage_mode from StudyMetadataDTO into storageMode in StudyMetadata.
webapp/src/routes/_authenticated/studies/$studyId/explore/route.tsx	Conditionally includes the Debug tab only for filesystem-backed studies.
webapp/src/routes/_authenticated/studies/$studyId/explore/debug/index.tsx	Throws an error if the debug route is accessed for non-filesystem studies.

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