fix: address code review feedback for Phase 1 — formatting violations in recovery.rs
- Fixed import ordering (chrono, crypto, serde alphabetically)
- Fixed map_err closure formatting (single line with braces properly aligned)
- Fixed single-argument function signature (check_recovery_window) to one line
- Fixed long assert_eq macro arguments (split to multi-line formatting)
- Fixed chained method call alignment (find_fork_point return value)
All violations addressed per cargo fmt --all --check requirements.