diff --git a/skills/wix-app/SKILL.md b/skills/wix-app/SKILL.md
index 261099b4..62c25123 100644
--- a/skills/wix-app/SKILL.md
+++ b/skills/wix-app/SKILL.md
@@ -6,6 +6,8 @@ compatibility: requires `@wix/cli` >= 1.1.192.
 
 # Wix App Builder
 
+> 🔬 **DUMMY PREVIEW MARKER** — this skill was served via `SKILLS_OVERRIDE_BRANCH=wix/skills:dummy-skills-override-preview` to demo the codegen skills-override flow (CODEAI-505). Safe to ignore / close.
+
 Helps build extensions for Wix CLI applications. Covers all extension types: dashboard pages, modals, plugins, menu plugins, custom element widgets, Editor React components, site plugins, embedded scripts, backend APIs, events, service plugins, and data collections.
 
 **Scaffolding is owned by the Wix CLI.** For every extension type except Backend API, files, folders, builder boilerplate, UUIDs, and `src/extensions.ts` registration are generated by `wix generate --params`. This skill provides the decision logic, API guidance, configuration semantics, and business-logic patterns that fill in the generated stubs.