feat(Production): Complete production deployment infrastructure

- Add comprehensive health check system with multiple endpoints
- Add Prometheus metrics endpoint
- Add production logging configurations (5 strategies)
- Add complete deployment documentation suite:
  * QUICKSTART.md - 30-minute deployment guide
  * DEPLOYMENT_CHECKLIST.md - Printable verification checklist
  * DEPLOYMENT_WORKFLOW.md - Complete deployment lifecycle
  * PRODUCTION_DEPLOYMENT.md - Comprehensive technical reference
  * production-logging.md - Logging configuration guide
  * ANSIBLE_DEPLOYMENT.md - Infrastructure as Code automation
  * README.md - Navigation hub
  * DEPLOYMENT_SUMMARY.md - Executive summary
- Add deployment scripts and automation
- Add DEPLOYMENT_PLAN.md - Concrete plan for immediate deployment
- Update README with production-ready features

All production infrastructure is now complete and ready for deployment.

src/Framework/MachineLearning/ModelManagement/PerformanceStorage.php

@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Framework\MachineLearning\ModelManagement;
+
+use App\Framework\Core\ValueObjects\Version;
+use App\Framework\Core\ValueObjects\Duration;
+
+/**
+ * Performance Storage Interface
+ *
+ * Storage abstraction for ML model performance tracking data.
+ */
+interface PerformanceStorage
+{
+    /**
+     * Store a prediction record
+     *
+     * @param array{
+     *     model_name: string,
+     *     version: string,
+     *     prediction: mixed,
+     *     actual: mixed,
+     *     confidence: float,
+     *     features: array,
+     *     timestamp: \DateTimeImmutable,
+     *     is_correct: ?bool
+     * } $predictionRecord
+     */
+    public function storePrediction(array $predictionRecord): void;
+
+    /**
+     * Get predictions within time window
+     *
+     * @return array<array{
+     *     model_name: string,
+     *     version: string,
+     *     prediction: mixed,
+     *     actual: mixed,
+     *     confidence: float,
+     *     features: array,
+     *     timestamp: \DateTimeImmutable,
+     *     is_correct: ?bool
+     * }>
+     */
+    public function getPredictions(
+        string $modelName,
+        Version $version,
+        Duration $timeWindow
+    ): array;
+
+    /**
+     * Get historical average confidence for baseline
+     */
+    public function getHistoricalAverageConfidence(
+        string $modelName,
+        Version $version
+    ): ?float;
+
+    /**
+     * Store confidence baseline for drift detection
+     */
+    public function storeConfidenceBaseline(
+        string $modelName,
+        Version $version,
+        float $avgConfidence,
+        float $stdDevConfidence
+    ): void;
+
+    /**
+     * Clear old prediction records (cleanup)
+     */
+    public function clearOldPredictions(Duration $olderThan): int;
+}