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/Unit/Framework/Database/ValueObjects/SchemaNameTest.php

@@ -0,0 +1,276 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Framework\Database\ValueObjects\SchemaName;
+use App\Framework\Database\ValueObjects\TableName;
+
+describe('SchemaName', function () {
+    it('creates schema name from string', function () {
+        $schema = SchemaName::fromString('app_v1');
+
+        expect($schema->value)->toBe('app_v1');
+        expect($schema->toString())->toBe('app_v1');
+    });
+
+    it('creates default public schema', function () {
+        $public = SchemaName::public();
+
+        expect($public->value)->toBe('public');
+        expect($public->isPublic())->toBeTrue();
+    });
+
+    it('creates information_schema', function () {
+        $infoSchema = SchemaName::informationSchema();
+
+        expect($infoSchema->value)->toBe('information_schema');
+        expect($infoSchema->isSystemSchema())->toBeTrue();
+    });
+
+    it('creates pg_catalog', function () {
+        $pgCatalog = SchemaName::pgCatalog();
+
+        expect($pgCatalog->value)->toBe('pg_catalog');
+        expect($pgCatalog->isSystemSchema())->toBeTrue();
+    });
+
+    it('validates schema name format', function () {
+        // Valid names - should not throw
+        SchemaName::fromString('app_v1');
+        SchemaName::fromString('my_schema');
+        SchemaName::fromString('_temp_schema');
+        SchemaName::fromString('schema123');
+
+        expect(true)->toBeTrue(); // Validation passed
+
+        // Invalid names - should throw
+        try {
+            SchemaName::fromString('');
+            expect(false)->toBeTrue('Should have thrown for empty name');
+        } catch (\InvalidArgumentException $e) {
+            expect($e->getMessage())->toContain('cannot be empty');
+        }
+
+        try {
+            SchemaName::fromString('123invalid');
+            expect(false)->toBeTrue('Should have thrown for name starting with number');
+        } catch (\InvalidArgumentException $e) {
+            expect($e->getMessage())->toContain('must start with a letter or underscore');
+        }
+
+        try {
+            SchemaName::fromString('invalid-name');
+            expect(false)->toBeTrue('Should have thrown for name with hyphen');
+        } catch (\InvalidArgumentException $e) {
+            expect($e->getMessage())->toContain('can only contain letters, numbers, and underscores');
+        }
+    });
+
+    it('validates maximum length', function () {
+        // Valid length
+        $validName = str_repeat('a', 64);
+        SchemaName::fromString($validName); // Should not throw
+
+        // Too long
+        $tooLong = str_repeat('a', 65);
+        try {
+            SchemaName::fromString($tooLong);
+            expect(false)->toBeTrue('Should have thrown for name exceeding max length');
+        } catch (\InvalidArgumentException $e) {
+            expect($e->getMessage())->toContain('exceeds maximum length');
+        }
+    });
+
+    it('detects SQL injection attempts', function () {
+        // Note: SQL injection attempts are caught by format validation
+        try {
+            SchemaName::fromString("app'; DROP SCHEMA--");
+            expect(false)->toBeTrue('Should have thrown for SQL injection attempt');
+        } catch (\InvalidArgumentException $e) {
+            expect($e->getMessage())->toBeString();
+        }
+
+        try {
+            SchemaName::fromString('app UNION SELECT');
+            expect(false)->toBeTrue('Should have thrown for SQL injection attempt');
+        } catch (\InvalidArgumentException $e) {
+            expect($e->getMessage())->toBeString();
+        }
+    });
+
+    it('quotes schema names for different platforms', function () {
+        $schema = SchemaName::fromString('app_v1');
+
+        expect($schema->quoted('postgresql'))->toBe('"app_v1"');
+        expect($schema->quoted('postgres'))->toBe('"app_v1"');
+        expect($schema->quoted('pgsql'))->toBe('"app_v1"');
+        expect($schema->quoted('sqlite'))->toBe('"app_v1"');
+        expect($schema->quoted('mysql'))->toBe('`app_v1`');
+        expect($schema->quoted())->toBe('"app_v1"'); // Default PostgreSQL
+    });
+
+    it('qualifies table names', function () {
+        $schema = SchemaName::fromString('app_v1');
+        $table = TableName::fromString('users');
+
+        expect($schema->qualifyTable($table, 'postgresql'))->toBe('"app_v1"."users"');
+        expect($schema->qualifyTable($table, 'mysql'))->toBe('`app_v1`.`users`');
+    });
+
+    it('compares schema names for equality', function () {
+        $schema1 = SchemaName::fromString('app_v1');
+        $schema2 = SchemaName::fromString('app_v1');
+        $schema3 = SchemaName::fromString('app_v2');
+
+        expect($schema1->equals($schema2))->toBeTrue();
+        expect($schema1->equals($schema3))->toBeFalse();
+
+        // PostgreSQL schemas are case-sensitive
+        $schemaLower = SchemaName::fromString('app');
+        $schemaUpper = SchemaName::fromString('APP');
+        expect($schemaLower->equals($schemaUpper))->toBeFalse();
+    });
+
+    it('matches schema name patterns', function () {
+        $schema = SchemaName::fromString('app_v1');
+
+        expect($schema->matches('app_*'))->toBeTrue();
+        expect($schema->matches('*_v1'))->toBeTrue();
+        expect($schema->matches('app_v1'))->toBeTrue();
+        expect($schema->matches('other_*'))->toBeFalse();
+    });
+
+    it('detects reserved SQL keywords', function () {
+        $schema = SchemaName::fromString('app_v1');
+        expect($schema->isReservedKeyword())->toBeFalse();
+    });
+
+    it('converts to lowercase', function () {
+        $schema = SchemaName::fromString('App_V1');
+
+        expect($schema->toLower())->toBe('app_v1');
+    });
+
+    it('checks for schema name prefix', function () {
+        $schema = SchemaName::fromString('app_v1');
+
+        expect($schema->hasPrefix('app_'))->toBeTrue();
+        expect($schema->hasPrefix('other_'))->toBeFalse();
+    });
+
+    it('checks for schema name suffix', function () {
+        $schema = SchemaName::fromString('app_v1');
+
+        expect($schema->hasSuffix('_v1'))->toBeTrue();
+        expect($schema->hasSuffix('_v2'))->toBeFalse();
+    });
+
+    it('detects public schema', function () {
+        $public = SchemaName::public();
+        expect($public->isPublic())->toBeTrue();
+
+        $custom = SchemaName::fromString('app_v1');
+        expect($custom->isPublic())->toBeFalse();
+    });
+
+    it('detects system schemas', function () {
+        $infoSchema = SchemaName::informationSchema();
+        expect($infoSchema->isSystemSchema())->toBeTrue();
+
+        $pgCatalog = SchemaName::pgCatalog();
+        expect($pgCatalog->isSystemSchema())->toBeTrue();
+
+        $pgSchema = SchemaName::fromString('pg_temp');
+        expect($pgSchema->isSystemSchema())->toBeTrue();
+
+        $customSchema = SchemaName::fromString('app_v1');
+        expect($customSchema->isSystemSchema())->toBeFalse();
+    });
+
+    it('detects temporary schemas', function () {
+        $tempSchema1 = SchemaName::fromString('temp_schema');
+        expect($tempSchema1->isTemporary())->toBeTrue();
+
+        $tempSchema2 = SchemaName::fromString('tmp_data');
+        expect($tempSchema2->isTemporary())->toBeTrue();
+
+        $tempSchema3 = SchemaName::fromString('schema_temp');
+        expect($tempSchema3->isTemporary())->toBeTrue();
+
+        $normalSchema = SchemaName::fromString('app_v1');
+        expect($normalSchema->isTemporary())->toBeFalse();
+    });
+
+    it('adds prefix to schema name', function () {
+        $schema = SchemaName::fromString('v1');
+        $prefixed = $schema->withPrefix('app_');
+
+        expect($prefixed->value)->toBe('app_v1');
+
+        // Original unchanged (immutable)
+        expect($schema->value)->toBe('v1');
+    });
+
+    it('removes prefix from schema name', function () {
+        $schema = SchemaName::fromString('app_v1');
+        $unprefixed = $schema->withoutPrefix('app_');
+
+        expect($unprefixed->value)->toBe('v1');
+
+        // Removing non-existent prefix returns same instance
+        $same = $unprefixed->withoutPrefix('other_');
+        expect($same->value)->toBe('v1');
+    });
+
+    it('converts to string via magic method', function () {
+        $schema = SchemaName::fromString('app_v1');
+
+        expect((string) $schema)->toBe('app_v1');
+    });
+
+    it('is immutable', function () {
+        $original = SchemaName::fromString('v1');
+        $prefixed = $original->withPrefix('app_');
+
+        // Original remains unchanged
+        expect($original->value)->toBe('v1');
+
+        // New instance created - verify by value difference
+        expect($prefixed->value)->toBe('app_v1');
+
+        // Removing non-existent prefix returns same instance (optimization)
+        $unprefixed = $original->withoutPrefix('app_');
+        expect($unprefixed->value)->toBe('v1');
+
+        // But removing actual prefix creates new instance
+        $prefixedSchema = SchemaName::fromString('app_v1');
+        $removedPrefix = $prefixedSchema->withoutPrefix('app_');
+        expect($removedPrefix->value)->toBe('v1');
+        expect($prefixedSchema->value)->toBe('app_v1'); // Original unchanged
+    });
+
+    it('handles edge cases correctly', function () {
+        // Single character (valid if letter or underscore)
+        $a = SchemaName::fromString('a');
+        expect($a->value)->toBe('a');
+
+        $underscore = SchemaName::fromString('_');
+        expect($underscore->value)->toBe('_');
+
+        // Underscore prefix
+        $schema = SchemaName::fromString('_temp');
+        expect($schema->value)->toBe('_temp');
+
+        // Numbers in name
+        $schema = SchemaName::fromString('app_123');
+        expect($schema->value)->toBe('app_123');
+    });
+
+    it('factory methods create valid schemas', function () {
+        SchemaName::public();
+        SchemaName::informationSchema();
+        SchemaName::pgCatalog();
+
+        expect(true)->toBeTrue(); // All factory methods succeeded
+    });
+});