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.

tests/Database/QueryOptimization/NPlusOneDetectionServiceTest.php

@@ -0,0 +1,208 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Framework\Database\QueryOptimization\Analysis\EagerLoadingAnalyzer;
+use App\Framework\Database\QueryOptimization\Analysis\NPlusOneDetector;
+use App\Framework\Database\QueryOptimization\NPlusOneDetectionService;
+use App\Framework\Database\QueryOptimization\QueryLogger;
+use App\Framework\Database\QueryOptimization\ValueObjects\QueryLog;
+use App\Framework\Logging\Logger;
+
+describe('NPlusOneDetectionService', function () {
+    beforeEach(function () {
+        $this->queryLogger = new QueryLogger();
+        $this->detector = new NPlusOneDetector();
+        $this->analyzer = new EagerLoadingAnalyzer();
+        $this->logger = $this->createMock(Logger::class);
+
+        $this->service = new NPlusOneDetectionService(
+            $this->queryLogger,
+            $this->detector,
+            $this->analyzer,
+            $this->logger
+        );
+    });
+
+    it('starts and stops logging', function () {
+        expect($this->queryLogger->isEnabled())->toBeFalse();
+
+        $this->service->startLogging();
+        expect($this->queryLogger->isEnabled())->toBeTrue();
+
+        $this->service->stopLogging();
+        expect($this->queryLogger->isEnabled())->toBeFalse();
+    });
+
+    it('analyzes logged queries', function () {
+        // Enable logging
+        $this->service->startLogging();
+
+        // Simulate N+1 queries
+        for ($i = 1; $i <= 10; $i++) {
+            $this->queryLogger->logQuery(
+                sql: 'SELECT * FROM posts WHERE user_id = ?',
+                bindings: [$i],
+                executionTimeMs: 5.0,
+                rowCount: 1
+            );
+        }
+
+        // Analyze
+        $result = $this->service->analyze();
+
+        expect($result)->toHaveKeys(['detections', 'strategies', 'statistics']);
+        expect($result['detections'])->not->toBeEmpty();
+        expect($result['statistics']['total_queries'])->toBe(10);
+    });
+
+    it('generates formatted report', function () {
+        $this->service->startLogging();
+
+        // Simulate N+1 queries
+        for ($i = 1; $i <= 10; $i++) {
+            $this->queryLogger->logQuery(
+                sql: 'SELECT * FROM posts WHERE user_id = ?',
+                bindings: [$i],
+                executionTimeMs: 5.0,
+                rowCount: 1
+            );
+        }
+
+        $report = $this->service->analyzeAndReport();
+
+        expect($report)->toContain('N+1 Query Detection Report');
+        expect($report)->toContain('Query Statistics');
+        expect($report)->toContain('N+1 Problems Detected');
+    });
+
+    it('profiles code execution', function () {
+        $executedCallable = false;
+
+        $analysis = $this->service->profile(function () use (&$executedCallable) {
+            $executedCallable = true;
+            return 'result';
+        });
+
+        expect($executedCallable)->toBeTrue();
+        expect($analysis)->toHaveKey('execution_time_ms');
+        expect($analysis)->toHaveKey('callback_result');
+        expect($analysis['callback_result'])->toBe('result');
+    });
+
+    it('returns critical problems only', function () {
+        $this->service->startLogging();
+
+        // Add critical N+1 (high execution count)
+        for ($i = 1; $i <= 50; $i++) {
+            $this->queryLogger->logQuery(
+                sql: 'SELECT * FROM posts WHERE user_id = ?',
+                bindings: [$i],
+                executionTimeMs: 10.0,
+                rowCount: 1
+            );
+        }
+
+        // Add low severity N+1
+        for ($i = 1; $i <= 6; $i++) {
+            $this->queryLogger->logQuery(
+                sql: 'SELECT * FROM comments WHERE post_id = ?',
+                bindings: [$i],
+                executionTimeMs: 1.0,
+                rowCount: 1
+            );
+        }
+
+        $critical = $this->service->getCriticalProblems();
+
+        // Should only contain the high-severity posts pattern
+        expect($critical)->toHaveCount(1);
+        expect($critical[0]->isCritical())->toBeTrue();
+    });
+
+    it('quick check detects N+1 problems', function () {
+        $this->service->startLogging();
+
+        for ($i = 1; $i <= 10; $i++) {
+            $this->queryLogger->logQuery(
+                sql: 'SELECT * FROM posts WHERE user_id = ?',
+                bindings: [$i],
+                executionTimeMs: 5.0,
+                rowCount: 1
+            );
+        }
+
+        expect($this->service->hasNPlusOneProblems())->toBeTrue();
+    });
+
+    it('returns query statistics', function () {
+        $this->service->startLogging();
+
+        $this->queryLogger->logQuery('SELECT * FROM users', [], 5.0, 10);
+        $this->queryLogger->logQuery('INSERT INTO logs (message) VALUES (?)', ['test'], 2.0, 1);
+        $this->queryLogger->logQuery('UPDATE users SET name = ? WHERE id = ?', ['John', 1], 3.0, 1);
+
+        $stats = $this->service->getQueryStatistics();
+
+        expect($stats['total_queries'])->toBe(3);
+        expect($stats['select_count'])->toBe(1);
+        expect($stats['insert_count'])->toBe(1);
+        expect($stats['update_count'])->toBe(1);
+    });
+
+    it('clears query logs', function () {
+        $this->service->startLogging();
+
+        $this->queryLogger->logQuery('SELECT * FROM users', [], 5.0);
+        expect($this->service->getQueryLogs())->toHaveCount(1);
+
+        $this->service->clearLogs();
+        expect($this->service->getQueryLogs())->toBeEmpty();
+    });
+
+    it('integrates detections with eager loading strategies', function () {
+        $this->service->startLogging();
+
+        // Create N+1 pattern
+        for ($i = 1; $i <= 15; $i++) {
+            $this->queryLogger->logQuery(
+                sql: 'SELECT * FROM posts WHERE user_id = ?',
+                bindings: [$i],
+                executionTimeMs: 8.0,
+                rowCount: 1
+            );
+        }
+
+        $result = $this->service->analyze();
+
+        expect($result['detections'])->toHaveCount(1);
+        expect($result['strategies'])->toHaveCount(1);
+
+        $strategy = $result['strategies'][0];
+        expect($strategy->tableName)->toBe('posts');
+        expect($strategy->codeExample)->toContain('eager loading');
+    });
+
+    it('handles empty query logs gracefully', function () {
+        $this->service->startLogging();
+
+        $result = $this->service->analyze();
+
+        expect($result['detections'])->toBeEmpty();
+        expect($result['strategies'])->toBeEmpty();
+        expect($result['statistics']['total_queries'])->toBe(0);
+    });
+
+    it('logs analysis completion', function () {
+        $this->logger->expects($this->once())
+            ->method('info')
+            ->with(
+                $this->stringContains('Analysis completed'),
+                $this->anything()
+            );
+
+        $this->service->startLogging();
+        $this->queryLogger->logQuery('SELECT * FROM users', [], 5.0);
+        $this->service->analyze();
+    });
+});