plugin.json was stuck at 0.1.0 across every release, so Claude Code's
per-version plugin cache never refreshed and clients kept running the
original .mcp.json (http://127.0.0.1:47822/mcp). Bump to 1.2.0 to match
the node package and add a release-workflow step that derives plugin.json
from the tag on every future release.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds a /plugin marketplace at the repo root and a `claude-mailbox` plugin under
plugin/ that wires the UserPromptSubmit hook without needing the per-user
`install-hook` step. The hook command (`claude-mailbox check --hook`) now reads
the mailbox name from $CLAUDE_MAILBOX_NAME when --name is omitted and emits a
one-line setup hint when the daemon is unreachable, so a missing daemon is loud
instead of invisible.
The plugin only contains the Claude Code glue — the daemon binary is still a
separate prerequisite (`npm i -g @kuns/claude-mailbox` + install-autostart),
and the plugin/README plus main README spell out the three-step setup.
