feat : add DatabaseInfo API resource and provider

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

src/ApiResource/DatabaseInfo.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\ApiResource;
+
+use ApiPlatform\Metadata\ApiResource;
+use ApiPlatform\Metadata\Get;
+use App\State\DatabaseInfoProvider;
+
+#[ApiResource(
+    operations: [
+        new Get(
+            uriTemplate: '/environments/{id}/database',
+            security: "is_granted('ROLE_ADMIN')",
+            provider: DatabaseInfoProvider::class,
+        ),
+    ],
+)]
+final class DatabaseInfo
+{
+    public bool $connected = false;
+    public string $name = '';
+    public string $size = '';
+    public int $tableCount = 0;
+    public int $activeConnections = 0;
+    public float $cacheHitRatio = 0.0;
+    public string $largestTable = '';
+}