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

.claude/skills/gate-check/references/gate-technical-setup.md

@@ -12,7 +12,7 @@
 
 **Quality Checks:**
 - [ ] All MVP GDDs pass individual design review (8 required sections, no MAJOR REVISION NEEDED verdict)
-- [ ] `/review-all-gdds` verdict is not FAIL (cross-GDD consistency and design theory checks pass)
+- [ ] `/review-all-gdds` verdict is not FAIL (cross-GDD consistency and design theory checks pass). A NOT ASSESSED verdict does not satisfy this: that review could not compare the GDDs, so this item is NOT ASSESSED for the gate
 - [ ] All cross-GDD consistency issues flagged by `/review-all-gdds` are resolved or explicitly accepted
 - [ ] System dependencies are mapped in the systems index and are bidirectionally consistent
 - [ ] MVP priority tier is defined
@@ -33,4 +33,6 @@ only thing that adds one.
 > has no meaning at `minimal` (no GDDs exist by design). Return a PASS verdict
 > with the note: *"No design gate at minimal workflow — minimal skips the
 > Systems Design phase; advancing brief → code."* The Section 6 stage write still
-> applies on user confirmation. Do NOT flag absent GDDs as blockers.
+> applies on user confirmation. Do NOT flag absent GDDs as blockers. This is the
+> named exception to Section 2b's rule that a gate with no required artifacts left
+> may not PASS; the director panel does not run for it.