Align brainstorm workflow with Codex input schema

project-template/AGENTS.md

@@ -43,16 +43,12 @@ production/review-mode.txt
 
 Allowed values:
 
-- `full` — all key director / lead review gates call their custom agents.
-- `lean` — only PHASE-GATE review gates such as `/gate-check` call directors;
-  ordinary per-skill review gates are skipped.
-- `solo` — all director review gates are skipped.
+- `full` — all gates active; every workflow step is reviewed.
+- `lean` — PHASE-GATEs only (`/gate-check`); per-skill gates are skipped.
+- `solo` — no director gates anywhere.
 
 Default when the file is missing: `lean`.
 
-This is not a global switch for all custom-agent usage. Future team workflows
-may still call specialist subagents as part of their core work.
-
 ## Collaboration Protocol
 
 User-driven collaboration, not autonomous execution. Every workflow follows:
@@ -77,12 +73,12 @@ The current plugin build exposes only the migrated `/brainstorm` workflow.
 
 ```text
 design/gdd/game-concept.md
-design/gdd/game-pillars.md
 ```
 
-In default `lean` mode, `/brainstorm` writes the initial pillar document itself.
-In `full` mode, the `creative-director` review gate participates in creating or
-updating the pillar document.
+Game pillars and anti-pillars are defined during `/brainstorm` and recorded
+inside `design/gdd/game-concept.md`. A separate `design/gdd/game-pillars.md`
+may be created later from the template if the project needs a standalone
+pillar source of truth.
 
 ## Design Documents
 
@@ -95,7 +91,7 @@ docs/architecture/
 production/
 ```
 
-`design/gdd/game-concept.md`, `design/gdd/game-pillars.md`, and
+`design/gdd/game-concept.md`, optional `design/gdd/game-pillars.md`, and
 `design/gdd/systems-index.md` are top-level design documents. They are not
 per-system GDDs.