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/Deployment/Pipeline/PipelineConfigTest.php

@@ -0,0 +1,157 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Framework\Deployment\Pipeline\ValueObjects\DeploymentEnvironment;
+use App\Framework\Deployment\Pipeline\ValueObjects\PipelineConfig;
+use App\Framework\Deployment\Pipeline\ValueObjects\PipelineStage;
+use App\Framework\Deployment\Pipeline\ValueObjects\StageConfig;
+
+describe('PipelineConfig', function () {
+    it('creates pipeline configuration with default values', function () {
+        $stages = [
+            StageConfig::forStage(PipelineStage::BUILD),
+            StageConfig::forStage(PipelineStage::TEST),
+        ];
+
+        $config = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: $stages
+        );
+
+        expect($config->name)->toBe('Test Pipeline');
+        expect($config->environment)->toBe(DeploymentEnvironment::DEVELOPMENT);
+        expect($config->stopOnFailure)->toBeTrue();
+        expect($config->enableRollback)->toBeFalse();
+        expect($config->globalParameters)->toBeEmpty();
+    });
+
+    it('creates pipeline configuration with custom values', function () {
+        $stages = [StageConfig::forStage(PipelineStage::BUILD)];
+
+        $config = new PipelineConfig(
+            name: 'Custom Pipeline',
+            environment: DeploymentEnvironment::PRODUCTION,
+            stages: $stages,
+            stopOnFailure: false,
+            enableRollback: true,
+            globalParameters: ['key' => 'value']
+        );
+
+        expect($config->stopOnFailure)->toBeFalse();
+        expect($config->enableRollback)->toBeTrue();
+        expect($config->globalParameters)->toHaveKey('key');
+    });
+
+    it('returns all stages', function () {
+        $stages = [
+            StageConfig::forStage(PipelineStage::BUILD),
+            StageConfig::forStage(PipelineStage::TEST),
+            StageConfig::forStage(PipelineStage::DEPLOY),
+        ];
+
+        $config = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: $stages
+        );
+
+        expect($config->getStages())->toHaveCount(3);
+    });
+
+    it('returns only enabled stages', function () {
+        $stages = [
+            new StageConfig(stage: PipelineStage::BUILD, enabled: true),
+            new StageConfig(stage: PipelineStage::TEST, enabled: false),
+            new StageConfig(stage: PipelineStage::DEPLOY, enabled: true),
+        ];
+
+        $config = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: $stages
+        );
+
+        $enabledStages = $config->getEnabledStages();
+
+        expect($enabledStages)->toHaveCount(2);
+        expect($enabledStages[0]->stage)->toBe(PipelineStage::BUILD);
+        expect($enabledStages[1]->stage)->toBe(PipelineStage::DEPLOY);
+    });
+
+    it('finds stage by type', function () {
+        $stages = [
+            StageConfig::forStage(PipelineStage::BUILD),
+            StageConfig::forStage(PipelineStage::TEST),
+        ];
+
+        $config = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: $stages
+        );
+
+        $buildStage = $config->findStage(PipelineStage::BUILD);
+
+        expect($buildStage)->not->toBeNull();
+        expect($buildStage->stage)->toBe(PipelineStage::BUILD);
+    });
+
+    it('returns null for non-existent stage', function () {
+        $stages = [StageConfig::forStage(PipelineStage::BUILD)];
+
+        $config = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: $stages
+        );
+
+        $deployStage = $config->findStage(PipelineStage::DEPLOY);
+
+        expect($deployStage)->toBeNull();
+    });
+
+    it('checks if stage is enabled', function () {
+        $stages = [
+            new StageConfig(stage: PipelineStage::BUILD, enabled: true),
+            new StageConfig(stage: PipelineStage::TEST, enabled: false),
+        ];
+
+        $config = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: $stages
+        );
+
+        expect($config->isStageEnabled(PipelineStage::BUILD))->toBeTrue();
+        expect($config->isStageEnabled(PipelineStage::TEST))->toBeFalse();
+        expect($config->isStageEnabled(PipelineStage::DEPLOY))->toBeFalse(); // Not in config
+    });
+
+    it('gets global parameter with default', function () {
+        $config = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: [],
+            globalParameters: ['timeout' => 300]
+        );
+
+        expect($config->getGlobalParameter('timeout'))->toBe(300);
+        expect($config->getGlobalParameter('missing', 'default'))->toBe('default');
+    });
+
+    it('creates config for different environment', function () {
+        $original = new PipelineConfig(
+            name: 'Test Pipeline',
+            environment: DeploymentEnvironment::DEVELOPMENT,
+            stages: [StageConfig::forStage(PipelineStage::BUILD)]
+        );
+
+        $production = $original->forEnvironment(DeploymentEnvironment::PRODUCTION);
+
+        expect($production->environment)->toBe(DeploymentEnvironment::PRODUCTION);
+        expect($production->name)->toBe($original->name);
+        expect($production->stages)->toBe($original->stages);
+    });
+});

tests/Unit/Deployment/Pipeline/StageConfigTest.php

@@ -0,0 +1,161 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Framework\Deployment\Pipeline\ValueObjects\DeploymentEnvironment;
+use App\Framework\Deployment\Pipeline\ValueObjects\PipelineStage;
+use App\Framework\Deployment\Pipeline\ValueObjects\StageConfig;
+
+describe('StageConfig', function () {
+    it('creates stage config with default values', function () {
+        $config = new StageConfig(stage: PipelineStage::BUILD);
+
+        expect($config->stage)->toBe(PipelineStage::BUILD);
+        expect($config->enabled)->toBeTrue();
+        expect($config->timeoutSeconds)->toBe(0);
+        expect($config->retries)->toBe(0);
+        expect($config->continueOnFailure)->toBeFalse();
+        expect($config->parameters)->toBeEmpty();
+        expect($config->skipEnvironments)->toBeEmpty();
+    });
+
+    it('creates stage config with custom values', function () {
+        $config = new StageConfig(
+            stage: PipelineStage::BUILD,
+            enabled: false,
+            timeoutSeconds: 300,
+            retries: 3,
+            continueOnFailure: true,
+            parameters: ['key' => 'value'],
+            skipEnvironments: [DeploymentEnvironment::DEVELOPMENT]
+        );
+
+        expect($config->enabled)->toBeFalse();
+        expect($config->timeoutSeconds)->toBe(300);
+        expect($config->retries)->toBe(3);
+        expect($config->continueOnFailure)->toBeTrue();
+        expect($config->parameters)->toHaveKey('key');
+        expect($config->skipEnvironments)->toContain(DeploymentEnvironment::DEVELOPMENT);
+    });
+
+    it('determines if should skip for environment', function () {
+        $config = new StageConfig(
+            stage: PipelineStage::BACKUP,
+            skipEnvironments: [
+                DeploymentEnvironment::DEVELOPMENT,
+                DeploymentEnvironment::STAGING
+            ]
+        );
+
+        expect($config->shouldSkipForEnvironment(DeploymentEnvironment::DEVELOPMENT))->toBeTrue();
+        expect($config->shouldSkipForEnvironment(DeploymentEnvironment::STAGING))->toBeTrue();
+        expect($config->shouldSkipForEnvironment(DeploymentEnvironment::PRODUCTION))->toBeFalse();
+    });
+
+    it('gets parameter with default value', function () {
+        $config = new StageConfig(
+            stage: PipelineStage::BUILD,
+            parameters: ['timeout' => 300]
+        );
+
+        expect($config->getParameter('timeout'))->toBe(300);
+        expect($config->getParameter('missing', 'default'))->toBe('default');
+    });
+
+    it('checks if has timeout', function () {
+        $noTimeout = new StageConfig(
+            stage: PipelineStage::BUILD,
+            timeoutSeconds: 0
+        );
+
+        $withTimeout = new StageConfig(
+            stage: PipelineStage::BUILD,
+            timeoutSeconds: 300
+        );
+
+        expect($noTimeout->hasTimeout())->toBeFalse();
+        expect($withTimeout->hasTimeout())->toBeTrue();
+    });
+
+    it('checks if has retries', function () {
+        $noRetries = new StageConfig(
+            stage: PipelineStage::BUILD,
+            retries: 0
+        );
+
+        $withRetries = new StageConfig(
+            stage: PipelineStage::BUILD,
+            retries: 3
+        );
+
+        expect($noRetries->hasRetries())->toBeFalse();
+        expect($withRetries->hasRetries())->toBeTrue();
+    });
+
+    it('creates default config for build stage', function () {
+        $config = StageConfig::forStage(PipelineStage::BUILD);
+
+        expect($config->stage)->toBe(PipelineStage::BUILD);
+        expect($config->enabled)->toBeTrue();
+        expect($config->timeoutSeconds)->toBe(600); // 10 minutes
+        expect($config->retries)->toBe(1);
+    });
+
+    it('creates default config for test stage', function () {
+        $config = StageConfig::forStage(PipelineStage::TEST);
+
+        expect($config->stage)->toBe(PipelineStage::TEST);
+        expect($config->timeoutSeconds)->toBe(300); // 5 minutes
+        expect($config->retries)->toBe(0);
+        expect($config->skipEnvironments)->toContain(DeploymentEnvironment::PRODUCTION);
+    });
+
+    it('creates default config for security check stage', function () {
+        $config = StageConfig::forStage(PipelineStage::SECURITY_CHECK);
+
+        expect($config->stage)->toBe(PipelineStage::SECURITY_CHECK);
+        expect($config->timeoutSeconds)->toBe(120); // 2 minutes
+        expect($config->skipEnvironments)->toContain(DeploymentEnvironment::DEVELOPMENT);
+    });
+
+    it('creates default config for backup stage', function () {
+        $config = StageConfig::forStage(PipelineStage::BACKUP);
+
+        expect($config->stage)->toBe(PipelineStage::BACKUP);
+        expect($config->timeoutSeconds)->toBe(300); // 5 minutes
+        expect($config->retries)->toBe(1);
+        expect($config->skipEnvironments)->toContain(DeploymentEnvironment::DEVELOPMENT);
+    });
+
+    it('creates default config for deploy stage', function () {
+        $config = StageConfig::forStage(PipelineStage::DEPLOY);
+
+        expect($config->stage)->toBe(PipelineStage::DEPLOY);
+        expect($config->timeoutSeconds)->toBe(600); // 10 minutes
+        expect($config->retries)->toBe(0);
+    });
+
+    it('creates default config for health check stage', function () {
+        $config = StageConfig::forStage(PipelineStage::HEALTH_CHECK);
+
+        expect($config->stage)->toBe(PipelineStage::HEALTH_CHECK);
+        expect($config->timeoutSeconds)->toBe(60); // 1 minute
+        expect($config->retries)->toBe(2);
+    });
+
+    it('creates default config for cleanup stage', function () {
+        $config = StageConfig::forStage(PipelineStage::CLEANUP);
+
+        expect($config->stage)->toBe(PipelineStage::CLEANUP);
+        expect($config->timeoutSeconds)->toBe(180); // 3 minutes
+        expect($config->continueOnFailure)->toBeTrue();
+    });
+
+    it('creates default config for rollback stage', function () {
+        $config = StageConfig::forStage(PipelineStage::ROLLBACK);
+
+        expect($config->stage)->toBe(PipelineStage::ROLLBACK);
+        expect($config->timeoutSeconds)->toBe(300); // 5 minutes
+        expect($config->retries)->toBe(0);
+    });
+});