Make Claude Opus 4.8 behave like the suspended Claude Fable 5 in Claude Code: a behavioral governor, a re-injection hook, and a leak-test harness measured from real logs.
Signals
PythonMITcreated 2026-06-14by Poorna-Repos
Fable-5 attribution
Explicit model id: “Claude Fable” (95% confidence)