project.godot's API URLs already pointed at UAT (us3q.ranaze.com), but
deployment_environment itself was still "development" - a leftover
label that never matched the actual origin. Since the UAT-only feature
gates (Dynamic Questions, CCS Cases, Flashcards) check for the literal
"uat" value, running from the Godot editor/debugger hid all three even
though it's UAT in every other respect.
Set it to "uat" to match reality, and update the two places that
sed-patch this value at build time (web/Dockerfile for the UAT/PRD web
builds, tools/export_steam_release.sh for the Steam build) so they
still match the source string they're replacing.
project.godot stays checked in against UAT (us3q.ranaze.com) so the
Godot editor/debugger keeps testing against UAT. This script patches a
local copy to prd/s3q.ranaze.com just for the Windows Desktop export -
the same swap web/Dockerfile already does for UAT vs PRD web builds -
runs the export, then always restores the original file.
Verified: after a run, `git diff project.godot` is clean and the
exported .pck contains s3q.ranaze.com with no trace of us3q.ranaze.com.