chore: add BMAD framework modules, folder features, and tooling configs

Includes BMAD bmb/bmm/cis/tea workflow modules, folder (declaration)
feature implementation (controllers, models, enums, views, tests),
claude/cursor command configs, and email templates.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

resources/views/emails/folder-mention.blade.php

@@ -0,0 +1,13 @@
+<x-mail::message>
+# Mention sur un dossier
+
+Bonjour,
+
+**{{ $mentionedByName }}** vous a mentionné sur le dossier **{{ $folderTitle }}**.
+
+> {{ $message }}
+
+<x-mail::button :url="$url" color="primary">
+Voir le dossier
+</x-mail::button>
+</x-mail::message>