refactor: simplify k8s deployment to pure kubectl

- Remove kustomization.yaml and all kustomize references
- Remove deploy-pi.sh and vpa-pi-helper.sh helper scripts
- Remove redundant ConfigMap from vpa.yaml
- Update README.md to focus on standard kubectl commands
- Keep deployment simple with just YAML files and kubectl
- Maintain Pi 5 optimizations and VPA functionality
- No complex tooling required for deployment

k8s/configmap.yaml

@@ -0,0 +1,58 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: unitforge-config
+  labels:
+    app: unitforge
+    component: config
+data:
+  # Application Information
+  APP_NAME: "UnitForge"
+  APP_VERSION: "1.0.0"
+  APP_DESCRIPTION: "Create, validate, and manage systemd unit files"
+
+  # Server Configuration
+  HOST: "0.0.0.0"
+  PORT: "8000"
+  DEBUG: "false"
+  ENVIRONMENT: "production"
+  LOG_LEVEL: "info"
+  RELOAD: "false"
+  WORKERS: "2"
+
+  # API Configuration
+  DOCS_URL: "/api/docs"
+  REDOC_URL: "/api/redoc"
+
+  # CORS Configuration
+  CORS_ORIGINS: "*"
+
+  # File Upload Settings
+  MAX_UPLOAD_SIZE: "2097152"
+  ALLOWED_EXTENSIONS: "['.service', '.timer', '.socket', '.mount', '.target', '.path']"
+
+  # Feature Flags
+  ENABLE_API_METRICS: "false"
+  ENABLE_REQUEST_LOGGING: "true"
+  ENABLE_TEMPLATE_CACHING: "true"
+  ENABLE_VALIDATION_CACHING: "true"
+
+  # Performance Settings (optimized for Pi)
+  REQUEST_TIMEOUT: "60"
+  KEEPALIVE_TIMEOUT: "10"
+  MAX_CONNECTIONS: "50"
+
+  # Monitoring
+  HEALTH_CHECK_ENABLED: "true"
+  METRICS_ENABLED: "false"
+
+  # Asset Optimization
+  MINIFY_ASSETS: "true"
+  COMPRESS_RESPONSES: "true"
+  HOT_RELOAD: "false"
+  SOURCE_MAPS: "false"
+
+  # Documentation
+  API_DOCS_ENABLED: "true"
+  SWAGGER_UI_ENABLED: "true"
+  REDOC_ENABLED: "true"