supertag update install copies extracted directory instead of binary on macOS

Summary

supertag update install --file ... --yes fails on macOS because the updater appears to copy the extracted release directory to the supertag binary path instead of copying the supertag binary inside that directory.

Environment

• macOS on Apple Silicon / arm64
• Installed version before update: 2.5.9
• Target version: 2.5.11
• Downloaded update: /Users/ryan/.cache/supertag/supertag-2.5.11.zip
• Current install path: /Users/ryan/Tools/supertag-cli/supertag

Repro

supertag --version
supertag update download
supertag update install --file /Users/ryan/.cache/supertag/supertag-2.5.11.zip --yes

Actual

🔄 Installing update...

Update file: /Users/ryan/.cache/supertag/supertag-2.5.11.zip
Binary path: /Users/ryan/Tools/supertag-cli/supertag

❌ Installation failed: Installation failed: ENOTSUP: operation not supported on socket, copyfile '/Users/ryan/.cache/supertag/extract-2026-06-29T02-53-15-327Z/supertag-cli-macos-arm64' -> '/Users/ryan/Tools/supertag-cli/supertag'

After this, supertag --version still reported 2.5.9.

Expected

The updater should copy:

supertag-cli-macos-arm64/supertag

to:

/Users/ryan/Tools/supertag-cli/supertag

It may also need to update the sibling binaries:

supertag-cli-macos-arm64/supertag-mcp
supertag-cli-macos-arm64/supertag-export

Evidence

unzip -l /Users/ryan/.cache/supertag/supertag-2.5.11.zip shows the release zip root is a directory:

supertag-cli-macos-arm64/
supertag-cli-macos-arm64/supertag
supertag-cli-macos-arm64/supertag-mcp
supertag-cli-macos-arm64/supertag-export

The error path suggests the updater tries to copy:

.../extract-.../supertag-cli-macos-arm64

directly to:

/Users/ryan/Tools/supertag-cli/supertag

instead of copying the binary one level deeper.

Workaround

Manual unzip and copying the three binaries worked:

tmp=$(mktemp -d)
unzip -q /Users/ryan/.cache/supertag/supertag-2.5.11.zip -d "$tmp"

install -m 755 "$tmp/supertag-cli-macos-arm64/supertag" /Users/ryan/Tools/supertag-cli/supertag
install -m 755 "$tmp/supertag-cli-macos-arm64/supertag-mcp" /Users/ryan/Tools/supertag-cli/supertag-mcp
install -m 755 "$tmp/supertag-cli-macos-arm64/supertag-export" /Users/ryan/Tools/supertag-cli/supertag-export

supertag --version

After the workaround, supertag --version returned 2.5.11.

Start at the supertag update install --file ... --yes entry point and inspect how the extracted ZIP root is resolved before copying. Reproduce with the supplied macOS arm64 archive, then verify that supertag, supertag-mcp, and supertag-export are copied from the nested directory and that supertag --version reports the target version.