refactor: consolidate plugins into plugins/ directory

- Created plugins/ directory to centralize all plugins
- Moved projman and project-hygiene into plugins/
- Updated .mcp.json paths from ../mcp-servers/ to ../../mcp-servers/
- Updated CLAUDE.md governance section with new directory structure
- Updated README.md with new repository structure diagram
- Fixed all path references in documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/projman/commands/initial-setup.md

@@ -0,0 +1,35 @@
+---
+name: initial-setup
+description: Run initial setup for support-claude-mktplace
+arguments: []
+---
+
+# Initial Setup
+
+Run the installation script to set up the toolkit.
+
+## What This Does
+
+1. Creates Python virtual environments for MCP servers
+2. Installs all dependencies
+3. Creates configuration file templates
+4. Validates existing configuration
+5. Reports remaining manual steps
+
+## Execution
+
+```bash
+cd ${PROJECT_ROOT}
+./scripts/setup.sh
+```
+
+## After Running
+
+Review the output for any manual steps required:
+- Configure API credentials in `~/.config/claude/`
+- Run `/labels-sync` to sync Gitea labels
+- Verify Wiki.js directory structure
+
+## Re-Running
+
+This command is safe to run multiple times. It will skip already-completed steps.