- Add directory parameter to getGitLabMergeRequestDiff for per-project API base URL override resolution - Mock getGitLabAuth/getEffectiveProviderApiBaseUrl in walkthrough tests - Update auth-check test to mock null auth instead of null client
- Add directory parameter to getGitLabMergeRequestDiff for per-project API base URL override resolution - Mock getGitLabAuth/getEffectiveProviderApiBaseUrl in walkthrough tests - Update auth-check test to mock null auth instead of null client