Add auto-loading of module permissions in RolePermissionSeeder

RolePermissionSeeder now automatically scans app/Modules/*/Permissions.php
files and registers all permissions found. No manual registration required.

- Added loadModulePermissions() method to scan module directories
- Changed givePermissionTo() to syncPermissions() for idempotency
- Updated Modules README to document auto-loading
- Updated CLAUDE.md to reflect auto-loading behavior

CLAUDE.md

@@ -260,7 +260,7 @@ return new class extends Migration
 };
 ```
 
-### 5. Permissions (REQUIRED)
+### 5. Permissions (REQUIRED) - AUTO-LOADED
 
 **File**: `src/app/Modules/[ModuleName]/Permissions.php`
 
@@ -275,6 +275,9 @@ return [
 ];
 ```
 
+> **✅ AUTO-LOADED**: `RolePermissionSeeder` automatically scans all `app/Modules/*/Permissions.php` 
+> files and registers them. Just run `php artisan db:seed --class=RolePermissionSeeder`.
+
 ### 6. Filament Resource (REQUIRED for admin)
 
 **File**: `src/app/Modules/[ModuleName]/Filament/Resources/[ModelName]Resource.php`