feat: Spring Boot backend with deploy pipeline

- REST API: POST/GET/DELETE /api/apps
- Build pipeline: JAR → Dockerfile → docker build → push → kubectl apply
- In-memory state with K8s reconciliation on startup
- Shell executor for docker/kubectl commands
- Configurable via env vars (server URL, bootstrap token, registry, namespace)

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

pom.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.4.3</version>
+        <relativePath/>
+    </parent>
+
+    <groupId>com.cameleer</groupId>
+    <artifactId>cameleer-deploy-demo</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>Cameleer Deploy Demo</name>
+    <description>Demo: upload Camel JARs, build containers with agent injection, deploy to K8s</description>
+
+    <properties>
+        <java.version>21</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>