Migrate frontend to TypeScript with Deno-based tooling (#206)

Compiles assets/*.ts via sensiolabs/typescript-bundle (standalone SWC
binary) and adds Deno for formatting, linting, type-checking, and
tests, keeping the project's no-Node/npm approach intact. Wires all
four into CI, the Justfile, and the pre-commit hook.

config/bundles.php

@@ -6,6 +6,7 @@ use DAMA\DoctrineTestBundle\DAMADoctrineTestBundle;
 use Doctrine\Bundle\DoctrineBundle\DoctrineBundle;
 use Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle;
 use Doctrine\Bundle\MigrationsBundle\DoctrineMigrationsBundle;
+use Sensiolabs\TypeScriptBundle\SensiolabsTypeScriptBundle;
 use Sentry\SentryBundle\SentryBundle;
 use Stof\DoctrineExtensionsBundle\StofDoctrineExtensionsBundle;
 use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
@@ -38,4 +39,5 @@ return [
     DAMADoctrineTestBundle::class => ['test' => true],
     StofDoctrineExtensionsBundle::class => ['all' => true],
     SymfonyCastsResetPasswordBundle::class => ['all' => true],
+    SensiolabsTypeScriptBundle::class => ['all' => true],
 ];