chore: establish YCode replication baseline and TODO

scripts/rea/probe-installed-skills-20261016.json

@@ -0,0 +1 @@
+{"actions":[{"kind":"click","step_id":"close-mcp-manager","selector":".mcp-modal-close","frames":0},{"kind":"click","step_id":"skills-tab","selector":".um-header__tabs [role=tab]","index":1,"frames":0},{"kind":"wait","step_id":"skills-tab-ready","duration_ms":350,"frames":0},{"kind":"click","step_id":"show-installed-skills","selector":"button[data-track-id=skill_market_my_installed_open]","frames":0},{"kind":"wait","step_id":"installed-skills-ready","duration_ms":600,"frames":1}]}