fix(assets): Add Bootstrap vendor files with PascalCase paths

- Add Assets/Vendor/Bootstrap/ (CSS and JS)
- Add Assets/Vendor/Fonts/ (Bootstrap Icons fonts)
- Fix path references in enqueue-scripts.php to use PascalCase
- Remove vendor/ from .gitignore (not using Composer)

Fixes CSS 404 errors on Linux production server.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.gitignore

@@ -40,9 +40,6 @@ Desktop.ini
 node_modules/
 npm-debug.log
 
-# Composer (si hay dependencias PHP)
-vendor/
-composer.lock
 
 # PHPUnit
 .phpunit.result.cache