When gsd-tools init output exceeds 50KB, core.cjs writes to a temp file and outputs @file:<path>. No workflow handled this prefix, causing agents to hallucinate /tmp paths that fail on Windows (C:\tmp doesn't exist). Add @file: resolution line after every INIT=$(node ...) call across all 32 workflow, agent, and reference files. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>