* feat(shared): add plugin support to shared directories
Add Claude Code plugins to the .ccs/shared/ symlink architecture,
enabling plugin sharing across all CCS profiles (GLM, GLMT, Kimi, etc).
Changes:
- SharedManager: Add 'plugins' to sharedDirs array
- Help text: Update all three implementations (Node.js, bash, PowerShell)
- Postinstall: Create ~/.ccs/shared/plugins/ directory on install
Architecture:
~/.claude/plugins/ <- ~/.ccs/shared/plugins/ <- instance/plugins/
This follows the existing pattern for commands/skills/agents and
maintains cross-platform compatibility with Windows fallback support.
* chore: bump version to 4.3.6
* docs: update CHANGELOG for v4.3.6