Fix hardcoded headers exceeding the 12-character validation limit and add max-length guidance for dynamically generated headers. Closes #559 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix hardcoded headers exceeding the 12-character validation limit and add max-length guidance for dynamically generated headers. Closes #559 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>