Build and publish only linux/amd64 and windows/amd64

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

.gitea/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
       # Catches platform-specific breakage before a release is tagged.
       - name: Every release platform compiles
         run: |
-          for t in linux/amd64 linux/arm64 linux/arm windows/amd64 darwin/amd64 darwin/arm64; do
+          for t in linux/amd64 windows/amd64; do
             echo "building for $t"
             GOOS=${t%/*} GOARCH=${t#*/} GOARM=7 CGO_ENABLED=0 go build -o /dev/null ./cmd/blacktip
           done