Enable Discovery debug logging for production troubleshooting

- Add DISCOVERY_LOG_LEVEL=debug
- Add DISCOVERY_SHOW_PROGRESS=true
- Temporary changes for debugging InitializerProcessor fixes on production

src/Framework/Database/ConnectionMetadata.php

@@ -0,0 +1,73 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Framework\Database;
+
+/**
+ * Connection metadata for advanced pool management
+ */
+final class ConnectionMetadata
+{
+    public function __construct(
+        public readonly string $id,
+        public readonly \DateTimeImmutable $createdAt,
+        public \DateTimeImmutable $lastUsedAt,
+        public \DateTimeImmutable $lastHealthCheckAt,
+        public bool $isHealthy = true,
+        public int $totalQueries = 0,
+        public int $failedQueries = 0,
+        public float $averageQueryTime = 0.0,
+    ) {
+    }
+
+    public function recordQuery(float $executionTimeMs, bool $successful = true): void
+    {
+        $this->lastUsedAt = new \DateTimeImmutable();
+        $this->totalQueries++;
+
+        if (! $successful) {
+            $this->failedQueries++;
+        }
+
+        // Update average query time (simple moving average)
+        $this->averageQueryTime = ($this->averageQueryTime * ($this->totalQueries - 1) + $executionTimeMs) / $this->totalQueries;
+    }
+
+    public function updateHealthStatus(bool $isHealthy): void
+    {
+        $this->isHealthy = $isHealthy;
+        $this->lastHealthCheckAt = new \DateTimeImmutable();
+    }
+
+    public function isIdle(int $maxIdleTimeSeconds): bool
+    {
+        $idleTime = time() - $this->lastUsedAt->getTimestamp();
+
+        return $idleTime > $maxIdleTimeSeconds;
+    }
+
+    public function needsHealthCheck(int $healthCheckIntervalSeconds): bool
+    {
+        $timeSinceLastCheck = time() - $this->lastHealthCheckAt->getTimestamp();
+
+        return $timeSinceLastCheck > $healthCheckIntervalSeconds;
+    }
+
+    public function getStats(): array
+    {
+        return [
+            'id' => $this->id,
+            'created_at' => $this->createdAt->format('c'),
+            'last_used_at' => $this->lastUsedAt->format('c'),
+            'last_health_check_at' => $this->lastHealthCheckAt->format('c'),
+            'is_healthy' => $this->isHealthy,
+            'total_queries' => $this->totalQueries,
+            'failed_queries' => $this->failedQueries,
+            'failure_rate' => $this->totalQueries > 0 ? $this->failedQueries / $this->totalQueries : 0,
+            'average_query_time_ms' => $this->averageQueryTime,
+            'age_seconds' => time() - $this->createdAt->getTimestamp(),
+            'idle_time_seconds' => time() - $this->lastUsedAt->getTimestamp(),
+        ];
+    }
+}