fix(prompts): point planning guidance at plan subagent

src/agents/dynamic-agent-core-sections.ts

@@ -196,7 +196,7 @@ export function buildNonClaudePlannerSection(model: string): string {
 Multi-step task? **ALWAYS consult Plan Agent first.** Do NOT start implementation without a plan.
 
 - Single-file fix or trivial change → proceed directly
-- Anything else (2+ steps, unclear scope, architecture) → \`task(subagent_type="prometheus", ...)\` FIRST
+- Anything else (2+ steps, unclear scope, architecture) → \`task(subagent_type="plan", ...)\` FIRST
 - Use \`task_id\` to resume the same Plan Agent - ask follow-up questions aggressively
 - If ANY part of the task is ambiguous, ask Plan Agent before guessing
 

src/agents/sisyphus/gpt-5-4.ts

@@ -288,7 +288,7 @@ Every implementation task follows this cycle. No exceptions.
    Follow \`<explore>\` protocol for tool usage and agent prompts.
 
 2. PLAN - List files to modify, specific changes, dependencies, complexity estimate.
-   Multi-step (2+) → consult Plan Agent via \`task(subagent_type="prometheus", ...)\`.
+   Multi-step (2+) → consult Plan Agent via \`task(subagent_type="plan", ...)\`.
    Single-step → mental plan is sufficient.
 
    <dependency_checks>

src/features/team-mode/team-registry/validator.test.ts

@@ -13,7 +13,7 @@ import {
 } from "./validator"
 
 const PROMETHEUS_REJECTION_MESSAGE =
-  "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use category: 'plan' instead."
+  "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use delegate-task with subagent_type: 'plan' instead."
 
 function createCategoryMember(name: string): Member {
   return {

src/features/team-mode/types.test.ts

@@ -136,7 +136,7 @@ describe("team-mode types", () => {
       ],
       [
         "prometheus",
-        "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use category: 'plan' instead.",
+        "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use delegate-task with subagent_type: 'plan' instead.",
       ],
     ] as const
 
@@ -286,7 +286,7 @@ describe("team-mode types", () => {
       "Agent 'momus' is read-only (plan reviewer). Cannot write to mailbox as team member. Use delegate-task for plan review instead.",
     )
     expect(AGENT_ELIGIBILITY_REGISTRY.prometheus.rejectionMessage).toBe(
-      "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use category: 'plan' instead.",
+      "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use delegate-task with subagent_type: 'plan' instead.",
     )
     expect(CategoryMemberSchema).toBeDefined()
     expect(SubagentMemberSchema).toBeDefined()

src/features/team-mode/types.ts

@@ -229,7 +229,7 @@ export const AGENT_ELIGIBILITY_REGISTRY: Readonly<Record<string, {
   prometheus: {
     verdict: "hard-reject",
     rejectionMessage:
-      "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use category: 'plan' instead.",
+      "Agent 'prometheus' is plan-mode-only; can only write to .omo/*.md (enforced by prometheusMdOnly hook). Cannot write to team mailbox. Use delegate-task with subagent_type: 'plan' instead.",
   },
   "sisyphus-junior": { verdict: "eligible" },
 } as const