ccnm v0.3.0

Two downloads, for the two halves of ccnm.

• macos-universal — arm64 + x86_64. This is the one an Agent Node
  needs, and it also works as a Runtime.
• linux-x86_64 — the Runtime half only (internal mcp-serve and the
  seven tools). The Agent half is a launchd LaunchAgent and does not run on
  Linux. Needs glibc >= 2.39; Debian 13 has 2.41.

Both machines need the same ccnm version.

Take the one for that machine -- a glob here would match both:

tar -xzf ccnm-<version>-<platform>.tar.gz
mv ccnm ~/.local/bin/ccnm.new && mv ~/.local/bin/ccnm.new ~/.local/bin/ccnm

Two things that bite:

• Never cp over a ccnm that has already run. On Apple Silicon the next
  exec of it dies with SIGKILL (exit 137) while the running one carries on
  with the old code. Rename over it, as above.
• Downloaded through a browser it arrives quarantined and macOS refuses to
  run it: xattr -d com.apple.quarantine ccnm. curl does not set that.

Setup, the doctor table and troubleshooting: README.md

Full Changelog: v0.2.0...v0.3.0