fix(ci): add Copilot to CLA allowlist for case-sensitive matching (#1845)

* Initial plan

* fix(ci): add Copilot to CLA allowlist for case-sensitive matching

Co-authored-by: rnwood <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: rnwood <[email protected]>

Author: Copilot

.github/workflows/cla.yml

@@ -27,7 +27,7 @@ jobs:
           path-to-document: 'https://github.com/rnwood/smtp4dev/blob/master/CLA.md'
           # branch should not be protected
           branch: 'clas'
-          allowlist: rnwood,dependabot[bot],copilot,copilot-swe-agent[bot]
+          allowlist: rnwood,dependabot[bot],copilot,Copilot,copilot-swe-agent[bot]
 
           # Custom messages for better user experience
           create-file-commit-message: 'docs: create CLA signature storage file'

docs/dev/CLA_MANAGEMENT.md

@@ -24,7 +24,8 @@ The CLA system automatically checks all pull requests to ensure contributors hav
 These users are exempt from CLA requirements:
 - `rnwood` (project owner)
 - `dependabot[bot]` (automated dependency updates)
-- `copilot` (GitHub Copilot assistant - legacy)
+- `copilot` (GitHub Copilot assistant - legacy lowercase)
+- `Copilot` (GitHub Copilot assistant - uppercase variant)
 - `copilot-swe-agent[bot]` (GitHub Copilot assistant - current)
 
 ## Signature Storage