With `WOW_GLUE_STOCK=1`, character select, realm list, create and the glue strings still ran native systems. They spawned hidden trees and could write the hidden `GlueDialog`. A refused scripted login showed nothing on the stock screens.
Every native glue system is now gated on `native_glue`. The cross-switch instruments (round trip, login shot, realm smoke) move into `glue_session`. Under stock, `WOW_CHAR` enters by the stock Enter World. The account guard's refusal opens the stock `OKAY` dialog, the path `CGlueMgr::Login` takes for an empty account (`0x46b090`). The schedule's ambiguity ceilings drop to 3939 and 372.
Test: a census fails on any system that touches the native screens' components or resources without the gate; it lists 44 on main. Live: native smoke, a stock login to create and back, a stock logout round trip, the stock realm smoke, and a guard refusal.
Part of #856.
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sam Sung
247ae3e631