PRs #108 and #109: vitest.config.ts missing isolate: true — inconsistent with #106 and #107

[bmersereau]

Problem

PRs #106 and #107 set isolate: true in backend/vitest.config.ts to ensure each test file runs in its own module registry. PRs #108 and #109 added vitest configs without this flag, relying instead on inline vi.resetModules() calls per test.

This inconsistency means module state could leak between test files in PRs #108/#109 if tests are added in the future that don't call vi.resetModules() manually.

Fix

Add isolate: true to backend/vitest.config.ts in both the fix/101-102-storage-improvements and fix/103-auth-client-singleton branches.

Affected

• Branch: fix/101-102-storage-improvements → PR fix: S3Client singleton and R2 error logging #108
• Branch: fix/103-auth-client-singleton → PR fix: singleton Supabase admin client in requireAuth middleware #109

[bmersereau]

Fixed in PRs #108 and #109. isolate: true has been added to backend/vitest.config.ts in both the fix/101-102-storage-improvements and fix/103-auth-client-singleton branches, matching the pattern used in PRs #106 and #107. Closes when PR #108 or #109 merges.