fix(db): ensure container_configs row when creating an agent group

src/db/agent-groups.ts

@@ -1,5 +1,6 @@
 import type { AgentGroup } from '../types.js';
 import { getDb } from './connection.js';
+import { ensureContainerConfig } from './container-configs.js';
 
 export function createAgentGroup(group: AgentGroup): void {
   getDb()
@@ -8,6 +9,7 @@ export function createAgentGroup(group: AgentGroup): void {
        VALUES (@id, @name, @folder, @agent_provider, @created_at)`,
     )
     .run(group);
+  ensureContainerConfig(group.id);
 }
 
 export function getAgentGroup(id: string): AgentGroup | undefined {

src/db/db-v2.test.ts

@@ -6,6 +6,7 @@ import {
   runMigrations,
   createAgentGroup,
   getAgentGroup,
+  getContainerConfig,
   getAgentGroupByFolder,
   getAllAgentGroups,
   updateAgentGroup,
@@ -105,6 +106,13 @@ describe('agent groups', () => {
     createAgentGroup(ag());
     expect(() => createAgentGroup({ ...ag(), id: 'ag-dup' })).toThrow();
   });
+
+  it('should create a default container_configs row', () => {
+    createAgentGroup(ag());
+    const config = getContainerConfig('ag-1');
+    expect(config).toBeDefined();
+    expect(config!.agent_group_id).toBe('ag-1');
+  });
 });
 
 // ── Messaging Groups ──