Community Turns Claude Fable 5 Into a Repository Auditor via a Self-Generated Prompt

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Following Claude Fable 5's June 9, 2026 launch, a widely shared prompt — reportedly generated by the model itself — turns it into a full repository auditor: it maps project structure, flags architecture and security issues by severity, builds improvement strategies, and outputs prioritized milestones with effort estimates. It's a builder-pattern showcase of long-horizon coding work driven entirely by a single structured prompt. The auditor workflow is an immediately reusable template for anyone running code-review agents.