feat: add container config to apps and default config to environments

- V5 migration: container_config JSONB + updated_at on apps,
  default_container_config JSONB on environments
- App/Environment records updated with new fields
- PUT /apps/{id}/container-config endpoint for per-app config
- PUT /admin/environments/{id}/default-container-config for env defaults
- GET /apps now supports optional environmentId (lists all when omitted)
- AppRepository.findAll() for cross-environment app listing

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

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

@@ -1,6 +1,8 @@
 package com.cameleer3.server.core.runtime;
 
 import java.time.Instant;
+import java.util.Map;
 import java.util.UUID;
 
-public record App(UUID id, UUID environmentId, String slug, String displayName, Instant createdAt) {}
+public record App(UUID id, UUID environmentId, String slug, String displayName,
+                  Map<String, Object> containerConfig, Instant createdAt, Instant updatedAt) {}

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

@@ -1,13 +1,16 @@
 package com.cameleer3.server.core.runtime;
 
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 import java.util.UUID;
 
 public interface AppRepository {
     List<App> findByEnvironmentId(UUID environmentId);
+    List<App> findAll();
     Optional<App> findById(UUID id);
     Optional<App> findByEnvironmentIdAndSlug(UUID environmentId, String slug);
     UUID create(UUID environmentId, String slug, String displayName);
+    void updateContainerConfig(UUID id, Map<String, Object> containerConfig);
     void delete(UUID id);
 }

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

@@ -10,6 +10,7 @@ import java.nio.file.Path;
 import java.security.MessageDigest;
 import java.util.HexFormat;
 import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 
 public class AppService {
@@ -25,10 +26,16 @@ public class AppService {
         this.jarStoragePath = jarStoragePath;
     }
 
+    public List<App> listAll() { return appRepo.findAll(); }
     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 void updateContainerConfig(UUID id, Map<String, Object> containerConfig) {
+        getById(id); // verify exists
+        appRepo.updateContainerConfig(id, containerConfig);
+    }
+
     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");

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

@@ -1,6 +1,7 @@
 package com.cameleer3.server.core.runtime;
 
 import java.time.Instant;
+import java.util.Map;
 import java.util.UUID;
 
 public record Environment(
@@ -9,5 +10,6 @@ public record Environment(
         String displayName,
         boolean production,
         boolean enabled,
+        Map<String, Object> defaultContainerConfig,
         Instant createdAt
 ) {}

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

@@ -1,6 +1,7 @@
 package com.cameleer3.server.core.runtime;
 
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 import java.util.UUID;
 
@@ -10,5 +11,6 @@ public interface EnvironmentRepository {
     Optional<Environment> findBySlug(String slug);
     UUID create(String slug, String displayName, boolean production);
     void update(UUID id, String displayName, boolean production, boolean enabled);
+    void updateDefaultContainerConfig(UUID id, Map<String, Object> defaultContainerConfig);
     void delete(UUID id);
 }

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

@@ -1,6 +1,7 @@
 package com.cameleer3.server.core.runtime;
 
 import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 
 public class EnvironmentService {
@@ -32,6 +33,11 @@ public class EnvironmentService {
         repo.update(id, displayName, production, enabled);
     }
 
+    public void updateDefaultContainerConfig(UUID id, Map<String, Object> defaultContainerConfig) {
+        getById(id); // verify exists
+        repo.updateDefaultContainerConfig(id, defaultContainerConfig);
+    }
+
     public void delete(UUID id) {
         Environment env = getById(id);
         if ("default".equals(env.slug())) {