* fix(native-chat): apply Windows environment overrides consistently
Use the same case-aware composition for native chat launches, preflight,
model discovery and naming. Canonicalize configured Windows names before
account readers and preserve account pins and POSIX case distinctions.
Tracked in #39075.
Co-authored-by: 김태겸 <oharapass@gmail.com>
Co-authored-by: Vitalii Kulish <mancunianez@gmail.com>
* test(native-chat): cover effective Windows catalog changes
* test(native-chat): retain child environment test import after sync
* test(native-chat): verify Windows child environment precedence
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Co-authored-by: 김태겸 <oharapass@gmail.com>
Co-authored-by: Vitalii Kulish <mancunianez@gmail.com>
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