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/partials/theme-script.blade.php

@@ -0,0 +1,7 @@
+<script>
+    (function () {
+        const stored = localStorage.getItem('theme');
+        const dark = stored === 'dark' || (!stored && window.matchMedia('(prefers-color-scheme: dark)').matches);
+        document.documentElement.classList.toggle('dark', dark);
+    })();
+</script>