Improve rabbit sheet printing functionality for A6 format without UI interference

[Copilot]

Problem

The existing print functionality for rabbit sheets (fiches lapin) had several issues:

• The print dialog modal could include unwanted UI elements in the printed output
• Print styles might not be properly isolated from the main application UI
• Users had to go through an unnecessary preview dialog before printing

Solution

This PR completely reimplements the print functionality to provide a clean, A6-formatted rabbit sheet without any superfluous interface elements.

Key Changes

New dedicated print utility (src/utils/print.utils.ts):

• Creates a standalone print window with optimized HTML content
• Generates A6-formatted layout (105mm x 148mm) with proper margins
• Includes integrated QR code generation using CDN library
• Automatically handles print dialog and window cleanup

Simplified user experience (src/pages/Animals/AnimalDetailPage.tsx):

• Removed the intermediate print preview dialog (30+ lines of code removed)
• Direct print action when clicking "Imprimer fiche" button
• Better error handling for popup blockers

Print-optimized layout:

• Clean typography with font sizes optimized for A6 format
• Essential information displayed in compact grid layout
• QR code properly sized and positioned
• CSS @page rules ensure correct A6 page size and margins

Technical Implementation

The new print function opens a dedicated window with self-contained HTML that includes:

• All necessary CSS styles embedded inline
• QR code generation via external CDN library
• Responsive layout that fits perfectly on A6 paper
• Automatic print triggering and window cleanup

Testing

Added comprehensive test suite covering:

• HTML content generation with proper animal data
• Graceful handling of missing/empty data
• Print workflow simulation
• Error handling for blocked popups

Usage

When users click "Imprimer fiche" on an animal detail page:

1. A new print window opens instantly with the formatted rabbit sheet
2. Browser print dialog appears automatically
3. Window closes after printing (or user cancellation)

The result is a clean, professional A6 rabbit identification sheet containing:

• Animal name and identifier
• Sex with appropriate symbols (♀/♂)
• Birth date and breed information
• QR code for digital traceability
• Generation timestamp

This implementation eliminates any risk of printing unwanted UI elements while providing a much smoother user experience.

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[hankerspace]

@copilot fix tests & lint

[Copilot]

@copilot fix tests & lint

Tests and lint have been fixed! The TypeScript compilation errors were resolved by updating the test file to use the correct Animal interface properties. All tests now pass (600 passed), lint passes without issues, and the build completes successfully. Changes committed in 5fb3e8c.