feat: complete deploy demo with React UI

Backend:
- Spring Boot 3.4, Java 21, REST API for app lifecycle
- Build pipeline: JAR → Dockerfile → docker build/push → kubectl apply
- In-memory state with K8s reconciliation on startup
- Configurable via env vars

Frontend:
- React 19 + @cameleer/design-system v0.1.26
- Dashboard table with status polling (5s)
- Deploy dialog with drag-and-drop JAR upload
- Resource limit/request configuration
- Environment variable editor
- Build log viewer
- Delete with confirmation dialog

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -1,3 +1,63 @@
-# cameleer-deploy-demo
+# Cameleer Deploy Demo
 
-Demo prototype: upload Camel JARs, build containers with agent injection, deploy to K8s with full observability
+Demo prototype: upload Camel JARs, build containers with automatic agent injection, deploy to K8s with full observability via cameleer3-server.
+
+## Architecture
+
+```
+Browser (React + @cameleer/design-system)
+  └─ Deploy Service (Spring Boot 3, port 8082)
+       ├─ docker build (inject cameleer3 agent)
+       ├─ docker push (Gitea registry)
+       └─ kubectl apply (k3s cluster)
+              └─ Agent auto-registers → cameleer3-server
+```
+
+## Prerequisites
+
+- Java 21
+- Node.js 22+
+- Docker (for building images)
+- kubectl configured for your k3s cluster
+- cameleer3-server running (for agent registration)
+
+## Quick Start
+
+### Backend
+
+```bash
+mvn clean package -DskipTests
+java -jar target/cameleer-deploy-demo-0.1.0-SNAPSHOT.jar \
+  --cameleer.deploy.server-url=http://cameleer3-server.cameleer.svc:8081 \
+  --cameleer.deploy.bootstrap-token=YOUR_TOKEN \
+  --cameleer.deploy.cameleer-server-ui=http://localhost:8081
+```
+
+### Frontend
+
+```bash
+cd ui
+npm install
+npm run dev
+```
+
+Open http://localhost:5174
+
+## Configuration
+
+| Env Var | Default | Description |
+|---------|---------|-------------|
+| `CAMELEER_SERVER_URL` | `http://cameleer3-server.cameleer.svc:8081` | cameleer3-server URL for agent registration |
+| `CAMELEER_BOOTSTRAP_TOKEN` | `changeme` | Bootstrap token for agent auth |
+| `CAMELEER_REGISTRY` | `gitea.siegeln.net/cameleer/demo-apps` | Container registry prefix |
+| `CAMELEER_AGENT_MAVEN_URL` | (Gitea Maven) | URL for cameleer3-agent JAR |
+| `CAMELEER_DEMO_NAMESPACE` | `cameleer-demo` | K8s namespace for deployed apps |
+| `CAMELEER_SERVER_UI` | `http://localhost:8081` | cameleer3-server UI URL (for links) |
+
+## Demo Flow
+
+1. Open the UI
+2. Click "Deploy Application"
+3. Upload a Camel JAR, configure resources and env vars
+4. Watch the build log stream
+5. Open cameleer3-server — your app appears with full observability