Release 1.1.2 — the default path works end to end

Fix release for 1.1.1: the minimal path end to end, engine commands that
run on Godot, Unity and Unreal, hook warnings you can see, and verdicts
that say when they could not check. Details in CHANGELOG.md; upgrade
steps in UPGRADING.md (v1.1.1 → v1.1.2).

Fixes #67
Fixes #131

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WuJn2FdynEybfL5KC697nJ

docs/COLLABORATIVE-DESIGN-PRINCIPLE.md

@@ -41,6 +41,11 @@ Users:
 
 ## 🔄 Collaborative Workflow Pattern
 
+> **At `rigor: minimal` (the default), the design record is the one-page
+> `design/game-brief.md`, not a set of GDDs.** `/brainstorm` writes it, and the
+> same question → options → decision → draft → approval protocol applies to it.
+> The GDD examples below show the `standard` and `full` tiers.
+
 Every agent interaction should follow this pattern:
 
 ### Pattern: Question → Options → Decision → Draft → Approval
@@ -685,4 +690,4 @@ This principle has been fully embedded across the project:
 - **All skills** — Updated to require approval before writing
 - **WORKFLOW-GUIDE.md** — Rewritten with collaborative examples
 - **README.md** — Clarifies collaborative (not autonomous) design
-- **AskUserQuestion tool** — Integrated into 16 skills for structured option UI
+- **AskUserQuestion tool** — Used by 68 skills (49 declare it) for structured option UI