v3.1.0-alpha.4 — Writing reliability and auditable AI gates

Current v3.1 preview. Adds recoverable writing workspaces, evidence and journal freshness gates, protected bounded revisions, method-safety checks, synthetic dogfooding, and hash-bound AI review/adjudication. Verified by the 32-check writing suite and 10/10 contract suite. High-risk scholarly meaning remains author-controlled; real-paper dogfooding and live-provider calibration are still beta prerequisites.