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/Indexing/IndexMigrationGeneratorTest.php

@@ -0,0 +1,165 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Framework\Database\Indexing\IndexMigrationGenerator;
+use App\Framework\Database\Indexing\ValueObjects\IndexRecommendation;
+use App\Framework\Database\Indexing\ValueObjects\IndexType;
+use App\Framework\Database\Indexing\ValueObjects\RecommendationPriority;
+use App\Framework\Database\PdoConnection;
+
+describe('IndexMigrationGenerator', function () {
+    beforeEach(function () {
+        $pdo = new PDO('sqlite::memory:');
+        $connection = new PdoConnection($pdo, 'sqlite');
+
+        $this->generator = new IndexMigrationGenerator($connection);
+    });
+
+    it('generates migration for adding indexes', function () {
+        $recommendations = [
+            new IndexRecommendation(
+                tableName: 'users',
+                columns: ['email'],
+                indexType: IndexType::BTREE,
+                reason: 'Frequent WHERE email lookups',
+                priority: RecommendationPriority::HIGH,
+                estimatedSpeedup: 5.0,
+                affectedQueries: 100
+            ),
+            new IndexRecommendation(
+                tableName: 'users',
+                columns: ['status', 'created_at'],
+                indexType: IndexType::BTREE,
+                reason: 'WHERE status + ORDER BY created_at',
+                priority: RecommendationPriority::CRITICAL,
+                estimatedSpeedup: 10.0,
+                affectedQueries: 250
+            )
+        ];
+
+        $migration = $this->generator->generateAddIndexMigration($recommendations, 'users');
+
+        expect($migration)->toBeString();
+        expect($migration)->toContain('extends Migration');
+        expect($migration)->toContain('public function up(Schema $schema)');
+        expect($migration)->toContain('public function down(Schema $schema)');
+        expect($migration)->toContain('users');
+        expect($migration)->toContain('$table->index');
+    });
+
+    it('generates migration for removing indexes', function () {
+        $unusedIndexes = [
+            [
+                'index_name' => 'idx_users_old_column',
+                'columns' => ['old_column']
+            ],
+            [
+                'index_name' => 'idx_users_deprecated',
+                'columns' => ['deprecated_field']
+            ]
+        ];
+
+        $migration = $this->generator->generateRemoveIndexMigration($unusedIndexes, 'users');
+
+        expect($migration)->toBeString();
+        expect($migration)->toContain('extends Migration');
+        expect($migration)->toContain('$table->dropIndex');
+        expect($migration)->toContain('idx_users_old_column');
+        expect($migration)->toContain('idx_users_deprecated');
+    });
+
+    it('generates optimization migration (add + remove)', function () {
+        $toAdd = [
+            new IndexRecommendation(
+                tableName: 'orders',
+                columns: ['customer_id', 'status'],
+                indexType: IndexType::BTREE,
+                reason: 'WHERE customer_id + status filter',
+                priority: RecommendationPriority::HIGH,
+                estimatedSpeedup: 8.0,
+                affectedQueries: 150
+            )
+        ];
+
+        $toRemove = [
+            [
+                'index_name' => 'idx_orders_unused',
+                'columns' => ['unused_column']
+            ]
+        ];
+
+        $migration = $this->generator->generateOptimizationMigration($toAdd, $toRemove, 'orders');
+
+        expect($migration)->toBeString();
+        expect($migration)->toContain('extends Migration');
+        expect($migration)->toContain('$table->dropIndex(\'idx_orders_unused\')');
+        expect($migration)->toContain('$table->index');
+    });
+
+    it('includes proper up/down migration methods', function () {
+        $recommendations = [
+            new IndexRecommendation(
+                tableName: 'products',
+                columns: ['category'],
+                indexType: IndexType::BTREE,
+                reason: 'Category filtering',
+                priority: RecommendationPriority::MEDIUM,
+                estimatedSpeedup: 3.0,
+                affectedQueries: 50
+            )
+        ];
+
+        $migration = $this->generator->generateAddIndexMigration($recommendations, 'products');
+
+        // Check UP method
+        expect($migration)->toContain('public function up(Schema $schema)');
+        expect($migration)->toContain('$schema->table(\'products\'');
+
+        // Check DOWN method (should reverse the UP actions)
+        expect($migration)->toContain('public function down(Schema $schema)');
+        expect($migration)->toContain('$table->dropIndex');
+    });
+
+    it('validates migration content structure', function () {
+        $recommendations = [
+            new IndexRecommendation(
+                tableName: 'test_table',
+                columns: ['test_column'],
+                indexType: IndexType::BTREE,
+                reason: 'Test',
+                priority: RecommendationPriority::LOW,
+                estimatedSpeedup: 1.5,
+                affectedQueries: 10
+            )
+        ];
+
+        $migration = $this->generator->generateAddIndexMigration($recommendations, 'test_table');
+
+        // Validate required components
+        expect($migration)->toContain('declare(strict_types=1)');
+        expect($migration)->toContain('use App\Framework\Database\Migration\Migration');
+        expect($migration)->toContain('use App\Framework\Database\Schema\Schema');
+        expect($migration)->toContain('final class');
+    });
+
+    it('handles composite indexes correctly', function () {
+        $recommendations = [
+            new IndexRecommendation(
+                tableName: 'posts',
+                columns: ['author_id', 'published_at', 'status'],
+                indexType: IndexType::BTREE,
+                reason: 'Complex WHERE + ORDER BY',
+                priority: RecommendationPriority::CRITICAL,
+                estimatedSpeedup: 15.0,
+                affectedQueries: 300
+            )
+        ];
+
+        $migration = $this->generator->generateAddIndexMigration($recommendations, 'posts');
+
+        expect($migration)->toContain('author_id');
+        expect($migration)->toContain('published_at');
+        expect($migration)->toContain('status');
+    });
+});