U5 of the Claude Desktop .mcpb bundle plan. Splits the existing single-
artifact release into three jobs.
- build-skill keeps the prior bash skills/last30days/scripts/build-skill.sh
flow, now uploaded via actions/upload-artifact instead of attaching
directly so the final release step can pull from one place.
- build-mcpb runs a matrix across darwin/arm64, darwin/amd64, and
linux/amd64. Each entry installs printing-press@v4.8.0 (pinned to
the version this PR was verified against; bump deliberately),
runs mcp/scripts/sync-engine.sh, cross-compiles the Go binary with
CGO_ENABLED=0 and the tag stamped into main.Version, and packages
via `printing-press bundle`. Output filenames follow PP's
DefaultBundleOutputPath convention.
- release downloads every artifact (.skill + 3 .mcpb files) and
attaches them to the GitHub release with generated notes.
- Windows packaging is deferred: the manifest's entry_point cannot
vary per platform within a single bundle, and Windows binaries need
.exe naming for the OS to honor execve. A follow-up plan can ship a
Windows-only bundle variant when there is demand.
Verified locally: `printing-press bundle --skip-build --binary` against
a host build produces a valid .mcpb (manifest.json + bin/<entry>).
YAML parse-clean on both workflows.
Matt Van Horn