Release v3.1.2

Changes

• chore(release): 3.1.2
• fix: avoid array spread when merging messages (#10)
• chore: add FUNDING.yml (GitHub Sponsors button)
• docs: add CONTRIBUTING and SECURITY for maintainer readiness (#8)
• ci: publish to GitHub Packages alongside npm
• docs: add codex history.jsonl path, -s flag, and full -t filter syntax

Installation

npm install -g model-usage

Usage

mu