docs: Add architecture documentation and presentation materials

## 📚 Documentation Updates
- Add ARCHITECTURE.md: Comprehensive system architecture overview
- Add PRESENTATION.md: 16-slide presentation for architecture overview
- Update K8S-DEPLOYMENT-GUIDE.md: Refine deployment instructions

## 📊 Architecture Documentation
- Executive summary of Site11 platform
- Detailed microservices breakdown (30+ services)
- Technology stack and deployment patterns
- Data flow and event-driven architecture
- Security and monitoring strategies

## 🎯 Presentation Materials
- Complete slide deck for architecture presentation
- Visual diagrams and flow charts
- Performance metrics and business impact
- Future roadmap (Q1-Q4 2025)

🤖 Generated with [Claude Code](https://claude.ai/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

k8s/K8S-DEPLOYMENT-GUIDE.md

@@ -6,23 +6,23 @@ Site11 파이프라인 시스템의 K8s 배포 가이드입니다. AWS 프로덕
 ## Architecture
 ```
 ┌─────────────────────────────────────────────────┐
-│                  Docker Compose                  │
-│  ┌──────────┐ ┌──────────┐ ┌──────────┐        │
-│  │ MongoDB  │ │  Redis   │ │  Kafka   │        │
-│  └──────────┘ └──────────┘ └──────────┘        │
-│  ┌──────────┐ ┌──────────┐ ┌──────────┐        │
-│  │Scheduler │ │ Monitor  │ │Lang Sync │        │
-│  └──────────┘ └──────────┘ └──────────┘        │
+│                  Docker Compose                 │
+│  ┌──────────┐ ┌──────────┐ ┌──────────┐         │
+│  │ MongoDB  │ │  Redis   │ │  Kafka   │         │
+│  └──────────┘ └──────────┘ └──────────┘         │
+│  ┌──────────┐ ┌──────────┐ ┌──────────┐         │
+│  │Scheduler │ │ Monitor  │ │Lang Sync │         │
+│  └──────────┘ └──────────┘ └──────────┘         │
 └─────────────────────────────────────────────────┘
                           ↕
 ┌─────────────────────────────────────────────────┐
-│                   Kubernetes                     │
-│  ┌──────────┐ ┌──────────┐ ┌──────────┐        │
-│  │   RSS    │ │  Search  │ │Translator│        │
-│  └──────────┘ └──────────┘ └──────────┘        │
-│  ┌──────────┐ ┌──────────┐                     │
-│  │ AI Gen   │ │Image Gen │                     │
-│  └──────────┘ └──────────┘                     │
+│                   Kubernetes                    │
+│  ┌──────────┐ ┌──────────┐ ┌──────────┐         │
+│  │   RSS    │ │  Search  │ │Translator│         │
+│  └──────────┘ └──────────┘ └──────────┘         │
+│  ┌──────────┐ ┌──────────┐                      │
+│  │ AI Gen   │ │Image Gen │                      │
+│  └──────────┘ └──────────┘                      │
 └─────────────────────────────────────────────────┘
 ```