fix(claude): stop defaulting edits to auto-accept

Removes permissions.defaultMode acceptEdits, so file changes are
confirmed rather than applied automatically. The setting is checked in
and applied to everyone working in the repository, which is the wrong
place to decide that.

.claude/settings.json

@@ -1,8 +1,5 @@
 {
   "enabledPlugins": {
     "vercel@claude-plugins-official": true
-  },
-  "permissions": {
-    "defaultMode": "acceptEdits"
   }
 }