- Added acknowledgment signature workflow to "Logging a Violation" section (step 7)
- Added toast notification step to violation logging workflow (step 9)
- Updated Violation History section: amend now includes acknowledged-by/date fields
- Added PDF acknowledgment rendering note to Violation History
- Added "Toast Notifications" as standalone feature section
- Updated Amendable Fields to include acknowledged_by and acknowledged_date
- Updated Immutability Rules table with ack fields
- Moved acknowledgment signature and toast system to Shipped in roadmap
- Removed acknowledgment signature from Near-term (already shipped)
- Toast success/error on PDF download, negate, restore, hard delete
- Toast success on employee edit and violation amendment via modal callbacks
- Error details from API responses included in error toasts
- New "Employee Acknowledgment" section with acknowledged_by name and date
- Replaces blank signature line on PDF with recorded acknowledgment
- Toast notifications for submit success/error, PDF download, and validation warnings
- Inline status messages retained as fallback
- ToastProvider context with useToast hook
- Supports success, error, info, and warning variants
- Auto-dismiss with configurable duration (default 4s)
- Slide-in animation with progress bar
- Stacks up to 5 toasts, oldest dismissed first
- Consistent with dark theme UI
