First public release.
- Fiction: narrative-architecture repair based on StoryScope (arXiv:2604.03136), a 30-feature diagnosis rubric, per-model fingerprint tables (Claude, GPT, Gemini, DeepSeek, Kimi)
- Professional prose: shared 10-check pass plus domain rules for release notes, PR/issue replies, postmortems, tickets, and technical articles
- Four operations: write, review (diagnose only), refactor, recreate
- Install — Claude Code:
/plugin marketplace add Nanako0129/sepiathen/plugin install sepia@sepia; Codex and Antigravity:./install.sh; Grok Build: auto-discovers the Claude Code install - Evidence digests with sources in
research/
Validated with claude plugin validate and the reference skills-ref validate. Not yet exercised: live installs on Codex CLI and Antigravity.