fix: quality-rails Commander version mismatch crashes mosaic quality-rails

CLI uses Commander 13, quality-rails used 12. The `_prepareForParse`
method (v13-only) was called on a v12 Command object via `addCommand`.

Fix: export `registerQualityRails(parent)` that registers subcommands
directly on the caller's Commander instance, avoiding cross-package
command sharing. Bump quality-rails commander to ^13.0.0.

Bump: cli/mosaic 0.0.10, quality-rails 0.0.3.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/mosaic/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mosaic/mosaic",
-  "version": "0.0.9",
+  "version": "0.0.10",
   "description": "Mosaic agent framework — installation wizard and meta package",
   "type": "module",
   "main": "dist/index.js",