feat: add /research command with sub-agent delegation

src/commands/builtin/index.test.ts

@@ -1,6 +1,6 @@
 import { describe, it, expect, vi } from 'vitest';
 
-import { createContextCommand, createElevateCommand, createModelCommand, createQueueCommand } from './index.js';
+import { createContextCommand, createElevateCommand, createModelCommand, createQueueCommand, createResearchCommand } from './index.js';
 
 describe('builtin /model command', () => {
   it('passes through the full argument string', async () => {
@@ -36,6 +36,36 @@ describe('builtin /model command', () => {
   });
 });
 
+describe('builtin /research command', () => {
+  it('delegates to the research agent with the full task string', async () => {
+    const cmd = createResearchCommand();
+    const delegateAgent = vi.fn(() => 'research output');
+
+    const result = await cmd.execute(['compare', 'k0s', 'vs', 'k3s'], {
+      channel: 'test',
+      senderId: 'user',
+      sessionId: 's1',
+      rawInput: '/research compare k0s vs k3s',
+      services: { delegateAgent },
+    });
+
+    expect(delegateAgent).toHaveBeenCalledWith('research', 'compare k0s vs k3s');
+    expect(result).toEqual({ handled: true, text: 'research output' });
+  });
+
+  it('returns usage when no task is provided', async () => {
+    const cmd = createResearchCommand();
+    const result = await cmd.execute([], {
+      channel: 'test',
+      senderId: 'user',
+      sessionId: 's1',
+      rawInput: '/research',
+      services: {},
+    });
+    expect(result).toEqual({ handled: true, text: 'Usage: /research <question or task>' });
+  });
+});
+
 describe('builtin /elevate command', () => {
   it('passes through the full argument string', async () => {
     const cmd = createElevateCommand();

src/commands/builtin/index.ts

@@ -195,11 +195,35 @@ export function createQueueCommand(): CommandDefinition {
   };
 }
 
+export function createResearchCommand(): CommandDefinition {
+  return {
+    name: 'research',
+    description: 'Delegate a task to the configured research sub-agent',
+    execute: async (args, ctx) => {
+      const task = args.join(' ').trim();
+      if (!task) {
+        return {
+          handled: true,
+          text: 'Usage: /research <question or task>',
+        };
+      }
+      if (!ctx.services?.delegateAgent) {
+        return notAvailable('Research command');
+      }
+      return {
+        handled: true,
+        text: await ctx.services.delegateAgent('research', task),
+      };
+    },
+  };
+}
+
 export function registerBuiltinCommands(registry: CommandRegistry): void {
   registry.register(createHelpCommand(registry));
   registry.register(createStatusCommand());
   registry.register(createUsageCommand());
   registry.register(createContextCommand());
+  registry.register(createResearchCommand());
   registry.register(createModelCommand());
   registry.register(createCompactCommand());
   registry.register(createResetCommand());