Update vsync.yaml configuration

Changed kind from 'plugin' to 'tool' and added npm field.

data/plugins/vsync.yaml

@@ -1,8 +1,8 @@
 name: vsync
 repo: https://github.com/nicepkg/vsync
+npm: "@nicepkg/vsync"
 tagline: Config sync across AI coding tools
 description: Sync Skills, MCP servers, Agents & Commands across Claude Code, Cursor, OpenCode, and Codex. One command syncs everything with automatic format conversion (JSON ↔ TOML ↔ JSONC), environment variable syntax preservation, and atomic writes.
-kind: plugin
+kind: tool
 topics:
   - environment
-compat: unknown