Add Signum — evidence-driven development pipeline

[t3chn]

Plugin: heurema/signum
Category: Development Tools / Code Quality

Evidence-driven development pipeline for Claude Code: CONTRACT → EXECUTE → AUDIT → PACK.

• Spec quality gate (7 dimensions, A-F grading)
• 3-model parallel audit (Claude + Codex + Gemini)
• Holdout scenarios (blind acceptance criteria)
• Iterative fix loop (up to 20 iterations)
• proofpack.json — tamper-evident CI artifact

Install: claude plugin marketplace add heurema/emporium && claude plugin install signum@emporium