v1.2.2 — Fix Claude Code plugin registration

Bug Fix

Claude Code: Plugin not discoverable after install

The v1.2.1 installer copied plugin files to ~/.claude/plugins/codebase-wizard/ but never
registered the plugin in Claude Code's three-file registry. Commands were silently ignored.

Fixed: The installer now writes all three required registry files on install --for claude:

1. ~/.claude/plugins/known_marketplaces.json — registers "local" as a marketplace source
2. ~/.claude/plugins/installed_plugins.json — registers codebase-wizard@local
3. ~/.claude/settings.json — enables the plugin via enabledPlugins

uninstall removes the entries from all three files cleanly.

Upgrade

pip install --upgrade ai-codebase-mentor
ai-codebase-mentor install --for claude

Then start a new Claude Code session for the plugin to be loaded.