Address PR #469 review: drop CLAUDE.md, document token_command more widely

- Remove CLAUDE.md from this branch per review request; the repo
  guidance content is fine but belongs in its own PR.
- Document token_command (alongside token/token_file) in the github
  and gitlab plugin docstrings, matching the jira/confluence notes.

Author: ammachado

CLAUDE.md

@@ -32,7 +32,9 @@
 See the :doc:`config` documentation for details on using aliases.
 
 Alternatively to ``token`` you can use ``token_file`` to have the
-token stored in a file rather than in your did config file.
+token stored in a file, or ``token_command`` to fetch it from an
+external command (e.g. a password manager), rather than storing it
+directly in your did config file.
 
 __ https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token
 

did/plugins/github.py

@@ -15,6 +15,11 @@
 interface (select ``api`` as the desired scope). See the `GitLab API`__
 documentation for details.
 
+Alternatively to ``token`` you can use ``token_file`` to have the
+token stored in a file, or ``token_command`` to fetch it from an
+external command (e.g. a password manager), rather than storing it
+directly in your did config file.
+
 Use ``login`` to override user name detected from the email address.
 See the :doc:`config` documentation for details on using aliases.
 Use ``ssl_verify`` to enable/disable SSL verification (default: true)