fix: add github_token parameter to Claude Code action

The action requires github_token in the 'with' section, not just as
environment variable. This should resolve the GitHub authentication error.

Author: lgallard

.github/workflows/feature-discovery.yml

@@ -79,6 +79,7 @@ jobs:
         with:
           claude_code_oauth_token: ${{ env.CLAUDE_TOKEN }}
           mode: agent
+          github_token: ${{ secrets.TERRAFORM_AUTOMATION_TOKEN }}
 
           # MCP Configuration for Terraform and Context7 documentation access
           mcp_config: |