backfill-journal-body-context

Run `npx skills use "https://github.com/mycelium-hq/ai-brain-starter" --skill "mycelium-hq/ai-brain-starter/backfill-journal-body-context"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.

Use the skills in "https://github.com/mycelium-hq/ai-brain-starter" that are relevant to the current task. Run `npx skills add "https://github.com/mycelium-hq/ai-brain-starter"` and select the relevant skills, then follow their instructions.