Frontend: Add print/export-friendly view styles for reports #192
Description
Goal
Support printable and shareable report output.
Scope
- Add print CSS styles for report-like pages
- Hide non-essential controls in print mode
- Ensure layout remains readable on A4/Letter
Acceptance Criteria
- Printed output is legible and properly paginated
- Branding/header/footer behavior is defined
- At least one report page validated