sxmc 1.0.9

Sumac: bring out what your tools can do — bridge skills, MCP, and APIs into reusable agent, terminal, and automation workflows
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## What

<!-- Brief description of what this PR does and why -->

## Testing

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## Checklist

- [ ] `cargo test` passes
- [ ] `cargo clippy` passes
- [ ] `cargo fmt` — no formatting changes needed
- [ ] README or docs updated (if user-facing changes)
- [ ] Stable `1.x` JSON contracts preserved for affected onboarding/maintenance commands
- [ ] Regressions in `setup -> add -> status -> sync` considered and called out if relevant