5e03ba3593
After Task 1 changed AuthUser.project_id from number to number | null, getProjectId now explicitly checks for null values and throws an error for platform users attempting to access project resources. This fix: - Adds null check to reject platform users (project_id === null) - Maintains type safety by ensuring return type is always number - Includes comprehensive unit tests for all scenarios - Preserves existing project-side behavior for valid project users Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>