release: 8.0.0

All workspace packages to 8.0.0; inter-package ranges tightened from *
to ^8.0.0 for publication.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014NgfSjHE11oFpoSnLVKLXd

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@uhhm/buuh-monorepo",
   "private": true,
-  "version": "8.0.0-dev",
+  "version": "8.0.0",
   "description": "Monorepo for buuh \u2014 a friendly fork of choo, rebuilt for the modern platform",
   "type": "module",
   "workspaces": [