ios: build-remote defaults to white-m1 host

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ios/scripts/build-remote.sh

@@ -2,7 +2,7 @@
 # Run from DevOps: syncs ios/ to White-M1, builds there, and pulls the IPAs back into ios/build/{public,prov}.
 set -euo pipefail
 cd "$(dirname "$0")/.."
-H=${BUILD_HOST:-white}; R=stemify-build/ios
+H=${BUILD_HOST:-white-m1}; R=stemify-build/ios
 rsync -a --exclude build --exclude prov --exclude Stemify.xcodeproj ./ $H:$R/
 ssh $H "cd $R && P12_PASS=\$(cat prov/cert_pass.txt 2>/dev/null) bash scripts/build-ipa.sh"
 mkdir -p build/public build/prov