Phase 3 previously said only "smallest possible reproducer" — a
passive property an agent can satisfy by name while still asserting
against the full reproducing fixture. Sharpen it into an explicit
two-step discipline: minimize the trigger (delta-reduce until one
more cut makes the symptom vanish) and make the fixture autonomous
(inline input, no shared fixtures/DB seeds/clocks/server boots
unless the bug is genuinely at that integration boundary).
- Iron Law gains: an un-minimized repro is not a RED test
- Phase 3 rewritten with explicit Minimize + Autonomous steps
- 3 rationalization rows + 4 red flags for the "full fixture
reproduces deterministically, ship it" failure mode
- SKILL.md overview/handoff mirrored at orchestrator altitude
Baseline (writing-skills RED-first): 6 subagent runs showed the old
wording usually steered right but relied on agent instinct; GREEN:
2 runs under the targeted full-fixture pressure now reduce to the
minimal trigger and cite the contract verbatim.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Brummel
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