Why: establish the authorized task workspace and its initial baseline. Evidence: preserved precheck receipt in .task/feature-fast-slow-o2-a01-final-budget.md; R0=8f59b135ec27fc04e432583d70e1e1d0d6f25ea8. Impact: task metadata only; the feature workspace starts at origin/main. Refs: .task/feature-fast-slow-o2-a01-final-budget.md Co-authored-by: Cursor <cursoragent@cursor.com>