Initial commit: SuiviCPT personal finance tracker

Laravel 11 + Livewire 3/Volt + Alpine.js + Tailwind app for household
budget planning, transaction tracking, and financial dashboards.

- Multi-tenant households with member invites
- Plan: monthly/yearly budget per category with overrides
- Suivi: transaction log with running balance (desktop + mobile quick-entry)
- Dashboard: budget vs tracked breakdown + Chart.js donuts
- Flux: Sankey diagram of income allocation
- WCAG 2.1 AA color tokens, dark mode, accessible tables/forms
- 50 Pest tests

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

resources/views/components/nav-link.blade.php

@@ -0,0 +1,11 @@
+@props(['active'])
+
+@php
+$classes = ($active ?? false)
+            ? 'inline-flex items-center px-1 pt-1 border-b-2 border-brand text-sm font-medium leading-5 text-text focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring focus-visible:ring-offset-2 focus-visible:ring-offset-surface transition duration-150 ease-in-out'
+            : 'inline-flex items-center px-1 pt-1 border-b-2 border-transparent text-sm font-medium leading-5 text-text-muted hover:text-text hover:border-border-strong focus:outline-none focus-visible:ring-2 focus-visible:ring-focus-ring focus-visible:ring-offset-2 focus-visible:ring-offset-surface transition duration-150 ease-in-out';
+@endphp
+
+<a {{ $attributes->merge(['class' => $classes]) }}>
+    {{ $slot }}
+</a>