diff --git a/apps/readest-app/.claude/skills/gstack b/apps/readest-app/.claude/skills/gstack
index c6e6a21d..19e699ab 160000
--- a/apps/readest-app/.claude/skills/gstack
+++ b/apps/readest-app/.claude/skills/gstack
@@ -1 +1 @@
-Subproject commit c6e6a21d1a9a58e771403260ff6a134898f2dd02
+Subproject commit 19e699ab9b69de9e1bf10d4b7c2682703b56f984