feat(builtin-commands): register hyperplan builtin command

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/features/builtin-commands/commands.ts

@@ -8,6 +8,7 @@ import { REFACTOR_TEMPLATE, REFACTOR_TEAM_MODE_ADDENDUM } from "./templates/refa
 import { START_WORK_TEMPLATE } from "./templates/start-work"
 import { HANDOFF_TEMPLATE } from "./templates/handoff"
 import { REMOVE_AI_SLOPS_TEMPLATE, REMOVE_AI_SLOPS_TEAM_MODE_ADDENDUM } from "./templates/remove-ai-slops"
+import { HYPERPLAN_TEMPLATE } from "./templates/hyperplan"
 
 interface LoadBuiltinCommandsOptions {
   useRegisteredAgents?: boolean
@@ -134,6 +135,13 @@ $ARGUMENTS
 </user-request>`,
       argumentHint: "[goal]",
     },
+    hyperplan: {
+      description: "(builtin) Adversarial multi-agent planning via team-mode (5 hostile category members cross-critique, lead synthesizes)",
+      template: `<command-instruction>
+${HYPERPLAN_TEMPLATE}
+</command-instruction>`,
+      argumentHint: "[planning-request]",
+    },
   }
 }