Add strict_types declaration to 9 scaffold/config files that were
missed in the earlier dx-audit pass (bcb40d4). All non-blade PHP
files in the repository now enforce strict typing per CLAUDE.md
conventions.
Files: bootstrap/app.php, bootstrap/providers.php, config/core.php,
database/seeders/DatabaseSeeder.php, public/index.php, routes/*.php,
app/Providers/AppServiceProvider.php
Fixes#5
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
