feat(gateway): CommandRegistryService + CommandExecutorService (P8-010) (#178)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/gateway/src/app.module.ts

@@ -17,6 +17,7 @@ import { SkillsModule } from './skills/skills.module.js';
 import { PluginModule } from './plugin/plugin.module.js';
 import { McpModule } from './mcp/mcp.module.js';
 import { AdminModule } from './admin/admin.module.js';
+import { CommandsModule } from './commands/commands.module.js';
 import { ThrottlerGuard, ThrottlerModule } from '@nestjs/throttler';
 
 @Module({
@@ -38,6 +39,7 @@ import { ThrottlerGuard, ThrottlerModule } from '@nestjs/throttler';
     PluginModule,
     McpModule,
     AdminModule,
+    CommandsModule,
   ],
   controllers: [HealthController],
   providers: [