The core now loads the stock `GameMenuFrame.xml` at its `FrameXML.toc` row, right after `UIPanelTemplates.xml`, and benilla's ESC menu look moves into the layer as `GameMenuAdapters.xml`, which reshapes the stock frame in place: a later file cannot take an occupied frame name (`0x701bd0`).
- Every stock rung stays in the chain with its name and a `TOP` anchor. The three the menu does not show are hidden and laid over the rung above, since a zero height leaves a rung's bottom edge unresolved (`combineEdge 0x767440`). So an addon that inserts under Interface Options and re-anchors Key Bindings (ShaguTweaks), or under Macros and re-anchors Logout (MCP, MoveAnything), lays out as on 1.12.1, with no error.
- The era rungs keep their look and behaviour: Options opens benilla's window; the `BenillaOptionsFrame`-aware wrappers of `ToggleGameMenu`, `IsOptionFrameOpen` and `UpdateMicroButtons` move into the layer; the non-stock names take the `Benilla` prefix. The core toc now names no file of ours.
- With the layer off (`WOW_STOCK_UI=1`), the menu is the stock menu and every rung opens its stock window.
Verified: a region dump of the open menu on main and here differs only in our own frames' names, their insertion order within one level (the rects do not overlap) and sub-1e-4 px float noise; new tests for ShaguTweaks' insert, MCP from the corpus, a pfUI-style skin and the stock-only menu, each failing on main; `scripts/gates.sh` and `scripts/smoke.sh` green; a live run opened the menu, opened Options and returned to the game, and MoveAnything's own insert landed under Macros with Logout below it. Built on macOS; no platform seam touched.
Fixes#553Fixes#540🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
