fable-harnesslisted

# Fable-Harness — Opus-thinking-high Generator + Fable Verifier with Hard Spec Gate A variant of `/harness-contract` (same autonomous Generator + Verifier pattern, same hard spec gate, same hardening) with three deliberate swaps: - **Generator (builder)** runs on **Opus 4.8 with thinking set high** — a deeper, more deliberate builder than the base skill's Sonnet, for work where the implementation reasoning is the hard part. - **Verifier (grader)** runs on **Fable 5** — a fast, cheap, independent grader from a different model family than the builder. That cross-family split preserves the core "never let the implementer grade itself" property while keeping grading turnaround quick. - **`--codex` red-team gate** spawns Codex as a *hostile adversary whose explicit mandate is to FAIL the build* — not the polite skeptic of the base skill. The sprint only earns terminal PASS if Codex genuinely cannot break it. Everything else (contract shape, contract hardening, Stop gate, Monitor/Cron, state machine, evidence layout) is identical to `harness-contract`. This skill is for **bounded, multi-deliverable work** where: - You can write a closed set of must_pass acceptance criteria - Each criterion has a literal shell command that proves PASS/FAIL - The contract is locked before spawning agents (no scope negotiation mid-flight) - The work terminates *itself* on contract completion (no human checkpoints) - The approved contract is made read-only and hash-checked before agents start - A s