fix(ci): allow claude[bot] to trigger Claude Code workflow

claude-auto-assign.yml posts @claude comments as claude[bot], which then
triggers claude.yml. The action rejected these with "non-human actor" error
because allowed_bots was not configured.

Co-Authored-By: Grey Newell <greyshipscode@gmail.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: greynewell

.github/workflows/claude.yml

@@ -36,6 +36,9 @@ jobs:
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
 
+          # Allow the claude-auto-assign bot to trigger this workflow
+          allowed_bots: "claude[bot]"
+
           additional_permissions: |
             actions: read