Ponytail: a Claude Code skill that asks "should we build this at all?" before touching the keyboard

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Claude Fable 5 earns its reputation through how it works: explicit multi-stage planning, delegating to sub-agents, and verifying its own output before it trusts it. fable-mode bottles that behavior as a skill. Drop it into Claude Code and it activates that same disciplined loop, planning out the stages, splitting work to sub-agents, and self-checking the results, on whatever model you're running. #github #opensource