Update claude settings

.claude/settings.json

@@ -2,7 +2,8 @@
   "permissions": {
     "allow": [
       "Bash(git:*)",
-      "Bash(exec zsh)"
+      "Bash(exec:*)",
+      "Bash(hms:*)"
     ],
     "deny": []
   }

CLAUDE.md

@@ -4,3 +4,7 @@
 - When you are going to introduce update to my nix config, do it on a experimental branch (use 'nightly'), and commit and push to that branch after you perform test to check the updates work as intended. Never work on the master branch which I will perform merge manually.
 - After you introduce updates, remember to reflect those updates in the readme, should they bring any changes.
 - You can use `hms` to perform home-manager switch and `exec zsh` to refresh shell environment
+
+## Testing Considerations
+
+- When you perform testing, remember you are in a non-interactive shell so things work for me might not work for your testing, unless you take your special testing environment into consideration