A launcher-spawned client showed the world with NO interface at all -
character screen included. RetailUi rode ACDREAM_RETAIL_UI (the dev-era
opt-in), FromSessionConfig inherited the env parse, and the launcher
strips ACDREAM_* from children by design, so every product launch got
the dev default. A session-config launch IS a product launch: RetailUi
is now forced true on that path; the env flag remains the dev-launch
opt-in. Pinned by the session-config options test with a null env.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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