feat: add EnvironmentService, AppService, DeploymentService

- EnvironmentService: CRUD with slug uniqueness, default env protection
- AppService: CRUD, JAR upload with SHA-256 checksumming
- DeploymentService: create, promote, status transitions

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

cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/AppService.java

@@ -0,0 +1,79 @@
+package com.cameleer3.server.core.runtime;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.MessageDigest;
+import java.util.HexFormat;
+import java.util.List;
+import java.util.UUID;
+
+public class AppService {
+    private static final Logger log = LoggerFactory.getLogger(AppService.class);
+
+    private final AppRepository appRepo;
+    private final AppVersionRepository versionRepo;
+    private final String jarStoragePath;
+
+    public AppService(AppRepository appRepo, AppVersionRepository versionRepo, String jarStoragePath) {
+        this.appRepo = appRepo;
+        this.versionRepo = versionRepo;
+        this.jarStoragePath = jarStoragePath;
+    }
+
+    public List<App> listByEnvironment(UUID environmentId) { return appRepo.findByEnvironmentId(environmentId); }
+    public App getById(UUID id) { return appRepo.findById(id).orElseThrow(() -> new IllegalArgumentException("App not found: " + id)); }
+    public List<AppVersion> listVersions(UUID appId) { return versionRepo.findByAppId(appId); }
+
+    public UUID createApp(UUID environmentId, String slug, String displayName) {
+        if (appRepo.findByEnvironmentIdAndSlug(environmentId, slug).isPresent()) {
+            throw new IllegalArgumentException("App with slug '" + slug + "' already exists in this environment");
+        }
+        return appRepo.create(environmentId, slug, displayName);
+    }
+
+    public AppVersion uploadJar(UUID appId, String filename, InputStream jarData, long size) throws IOException {
+        getById(appId); // verify app exists
+        int nextVersion = versionRepo.findMaxVersion(appId) + 1;
+
+        // Store JAR: {jarStoragePath}/{appId}/v{version}/app.jar
+        Path versionDir = Path.of(jarStoragePath, appId.toString(), "v" + nextVersion);
+        Files.createDirectories(versionDir);
+        Path jarFile = versionDir.resolve("app.jar");
+
+        MessageDigest digest;
+        try { digest = MessageDigest.getInstance("SHA-256"); }
+        catch (Exception e) { throw new RuntimeException(e); }
+
+        try (InputStream in = jarData) {
+            byte[] buffer = new byte[8192];
+            int bytesRead;
+            try (var out = Files.newOutputStream(jarFile)) {
+                while ((bytesRead = in.read(buffer)) != -1) {
+                    out.write(buffer, 0, bytesRead);
+                    digest.update(buffer, 0, bytesRead);
+                }
+            }
+        }
+
+        String checksum = HexFormat.of().formatHex(digest.digest());
+        UUID versionId = versionRepo.create(appId, nextVersion, jarFile.toString(), checksum, filename, size);
+
+        log.info("Uploaded JAR for app {}: version={}, size={}, sha256={}", appId, nextVersion, size, checksum);
+        return versionRepo.findById(versionId).orElseThrow();
+    }
+
+    public String resolveJarPath(UUID appVersionId) {
+        AppVersion version = versionRepo.findById(appVersionId)
+                .orElseThrow(() -> new IllegalArgumentException("AppVersion not found: " + appVersionId));
+        return version.jarPath();
+    }
+
+    public void deleteApp(UUID id) {
+        appRepo.delete(id);
+    }
+}

cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/DeploymentService.java

@@ -0,0 +1,53 @@
+package com.cameleer3.server.core.runtime;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+import java.util.UUID;
+
+public class DeploymentService {
+    private static final Logger log = LoggerFactory.getLogger(DeploymentService.class);
+
+    private final DeploymentRepository deployRepo;
+    private final AppService appService;
+    private final EnvironmentService envService;
+
+    public DeploymentService(DeploymentRepository deployRepo, AppService appService, EnvironmentService envService) {
+        this.deployRepo = deployRepo;
+        this.appService = appService;
+        this.envService = envService;
+    }
+
+    public List<Deployment> listByApp(UUID appId) { return deployRepo.findByAppId(appId); }
+    public Deployment getById(UUID id) { return deployRepo.findById(id).orElseThrow(() -> new IllegalArgumentException("Deployment not found: " + id)); }
+
+    /** Create a deployment record. Actual container start is handled by DeploymentExecutor (async). */
+    public Deployment createDeployment(UUID appId, UUID appVersionId, UUID environmentId) {
+        App app = appService.getById(appId);
+        Environment env = envService.getById(environmentId);
+        String containerName = env.slug() + "-" + app.slug();
+
+        UUID deploymentId = deployRepo.create(appId, appVersionId, environmentId, containerName);
+        return deployRepo.findById(deploymentId).orElseThrow();
+    }
+
+    /** Promote: deploy the same app version to a different environment. */
+    public Deployment promote(UUID appId, UUID appVersionId, UUID targetEnvironmentId) {
+        return createDeployment(appId, appVersionId, targetEnvironmentId);
+    }
+
+    public void markRunning(UUID deploymentId, String containerId) {
+        deployRepo.updateStatus(deploymentId, DeploymentStatus.RUNNING, containerId, null);
+        deployRepo.markDeployed(deploymentId);
+    }
+
+    public void markFailed(UUID deploymentId, String errorMessage) {
+        deployRepo.updateStatus(deploymentId, DeploymentStatus.FAILED, null, errorMessage);
+    }
+
+    public void markStopped(UUID deploymentId) {
+        deployRepo.updateStatus(deploymentId, DeploymentStatus.STOPPED, null, null);
+        deployRepo.markStopped(deploymentId);
+    }
+}

cameleer3-server-core/src/main/java/com/cameleer3/server/core/runtime/EnvironmentService.java

@@ -0,0 +1,37 @@
+package com.cameleer3.server.core.runtime;
+
+import java.util.List;
+import java.util.UUID;
+
+public class EnvironmentService {
+    private final EnvironmentRepository repo;
+
+    public EnvironmentService(EnvironmentRepository repo) {
+        this.repo = repo;
+    }
+
+    public List<Environment> listAll() { return repo.findAll(); }
+
+    public Environment getById(UUID id) {
+        return repo.findById(id).orElseThrow(() -> new IllegalArgumentException("Environment not found: " + id));
+    }
+
+    public Environment getBySlug(String slug) {
+        return repo.findBySlug(slug).orElseThrow(() -> new IllegalArgumentException("Environment not found: " + slug));
+    }
+
+    public UUID create(String slug, String displayName) {
+        if (repo.findBySlug(slug).isPresent()) {
+            throw new IllegalArgumentException("Environment with slug '" + slug + "' already exists");
+        }
+        return repo.create(slug, displayName);
+    }
+
+    public void delete(UUID id) {
+        Environment env = getById(id);
+        if ("default".equals(env.slug())) {
+            throw new IllegalArgumentException("Cannot delete the default environment");
+        }
+        repo.delete(id);
+    }
+}