Add tracked AI skills for Blender assets and release QA

.gitignore

@@ -59,9 +59,19 @@ assets/models/generated/npc_base_*_normal.png
 # Local AppImage extraction
 squashfs-root/
 
-# Local agent skills (installed per machine from the Blender Skills Pack; not part of
-# the game, tests or release artifacts, and never shipped)
+# Local agent skills. The third-party Blender pack is installed per machine and
+# stays ignored; the two project-authored skills are tracked so the workflow can
+# be shared and reviewed.
 .agents/
+!.agents/
+.agents/*
+!.agents/.gdignore
+!.agents/skills/
+.agents/skills/*
+!.agents/skills/gig-line-blender-asset-contract/
+!.agents/skills/gig-line-blender-asset-contract/**
+!.agents/skills/gig-line-release-qa/
+!.agents/skills/gig-line-release-qa/**
 # Blender asset library: per-asset Cycles renders are local review output (the
 # committed review artefacts are docs/blender_previews/sheet_*.jpg), and Godot
 # extracts the GLB-embedded textures next to the models on import.