✅ auth.uid as dn

[pboling]

Documents and closes #50

[Copilot]

Pull Request Overview

This PR adds documentation and test coverage to clarify the distinction between the LDAP search attribute (:uid config option) and the OmniAuth auth hash's auth.uid field, which always returns the Distinguished Name (DN).

• Adds a new test case demonstrating that auth.uid returns the DN (not the sAMAccountName attribute value) when using sAMAccountName as the search attribute
• Adds comprehensive README documentation explaining the difference between :uid config option and auth.uid result
• Documents where to find username-style values (auth.info.nickname or auth.extra.raw_info)

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
spec/omniauth/strategies/ldap_spec.rb	Adds test case verifying that auth.uid returns DN when using sAMAccountName as the search attribute, and that nickname correctly maps from sAMAccountName
README.md	Adds new documentation section explaining the distinction between :uid config option (search attribute) and auth.uid result (DN), with examples and RFC references

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.71%. Comparing base (6efd08e) to head (25968b2).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #101   +/-   ##
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  Coverage   97.71%   97.71%           
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  Files           4        4           
  Lines         219      219           
  Branches       59       59           
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  Hits          214      214           
  Misses          5        5           

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[github-actions]

Package	Line Rate	Branch Rate	Health
omniauth-ldap	98%	80%	➖
Summary	98% (204 / 208)	80% (51 / 64)	➖

Minimum allowed line rate is 98%