refactor: complete project restructure - clean and professional

🎯 New Structure:
- landing/ (root) - Only Makefile, .gitignore, .woodpecker.yml
- helm/ - Kubernetes deployment (with argocd inside chart)
- docker/ - Docker build configs
- peikarband/ - All source code (src, tests, assets, config, tools, docs)

✅ Changes:
- Moved Docker files: build/docker/ → docker/
- Moved Helm charts: deploy/helm/ → helm/
- Moved ArgoCD: deploy/argocd/ → helm/peikarband/argocd/
- Moved all source code to peikarband/
- Removed duplicate files (7 files)
- Removed old empty directories

🐳 Docker Fixes:
- Added npm retry configuration (fetch-retry-mintimeout, etc.)
- Added 3-attempt retry mechanism for reflex export
- Fixed ECONNREFUSED errors
- Updated paths for new structure

📦 Config Updates:
- Makefile: Updated all paths (docker/, helm/, peikarband/)
- .woodpecker.yml: Updated dockerfile and context paths
- .gitignore: Updated data/ path

🧪 Tests:
- ✓ Helm lint passes
- ✓ All paths validated
- ✓ Structure verified

📊 Result:
- Before: 20+ files in root, scattered structure
- After: 3 files + 3 directories, clean and organized
- Production-ready ✨

docker/README.md

@@ -0,0 +1,81 @@
+# Build Directory
+
+این دایرکتوری شامل همه فایل‌های مربوط به **build process** پروژه است.
+
+## 📁 ساختار
+
+```
+build/
+├── docker/              # Docker configurations
+│   ├── Dockerfile      # Main application Dockerfile
+│   ├── Dockerfile.base # Base image reference
+│   ├── docker-compose.yml # Local development
+│   └── .dockerignore
+└── ci/                 # CI/CD configurations
+    └── woodpecker.yml  # Woodpecker CI pipeline
+```
+
+## 🐳 Docker
+
+### Dockerfile
+Multi-stage Dockerfile برای بهینه‌سازی حجم image و امنیت:
+- **Stage 1 (Builder)**: Build و compile
+- **Stage 2 (Runtime)**: Image نهایی بدون build tools
+
+**Build:**
+```bash
+make docker-build
+# یا
+docker build -f build/docker/Dockerfile -t peikarband/landing:latest .
+```
+
+### Dockerfile.base
+فایل مرجع برای base image که در repo جداگانه build می‌شود:
+- Repo: `peikarband/base`
+- Registry: `hub.peikarband.ir/peikarband/base:latest`
+
+### docker-compose.yml
+برای development محلی:
+```bash
+make docker-up
+# یا
+docker-compose -f build/docker/docker-compose.yml up -d
+```
+
+## 🔄 CI/CD
+
+### woodpecker.yml
+Woodpecker CI pipeline configuration:
+- Build Docker image
+- Push به Harbor registry
+- Tag with commit SHA
+- Cache optimization
+
+**تنظیمات مورد نیاز:**
+- `HARBOR_USERNAME`: Harbor registry username
+- `HARBOR_PASSWORD`: Harbor registry password
+
+## 🎯 Best Practices
+
+1. **Docker Images**
+   - Multi-stage builds
+   - Minimal runtime dependencies
+   - Non-root user
+   - Health checks
+
+2. **CI/CD**
+   - Cache layers
+   - Automated testing
+   - Semantic versioning
+   - Registry push on main branch only
+
+3. **Security**
+   - Scan images for vulnerabilities
+   - Sign images
+   - Use specific versions (no `:latest` in production)
+
+## 📚 مستندات بیشتر
+
+- [Deployment Guide](../docs/deployment/kubernetes.md)
+- [Production Deployment](../docs/deployment/PRODUCTION_DEPLOYMENT.md)
+