DSH Narrative Ledger: A Read-Only Story State Evidence Layer for DeepSeek Harness

DSH-Narrative-Ledger is a read-only, verifiable story-state ledger plugin for DeepSeek Harness, positioned as a machine-checkable continuity evidence layer rather than a fiction generator. It provides content-addressed canon references, immutable event sequences, monotonic story time verification, factual assertion and retraction detection, single-value conflict disclosure, and character knowledge boundary control. The plugin supports spoiler-safe projection and deterministic JSON report generation, enabling filesystem verification and atomic publishing via DSH/CLI to ensure byte-level verifiability of canon sources. It refuses to process manuscript bodies and sensitive fields, strictly restricts paths within workspaceRoot, prohibits symbolic links, and does not run shells or initiate network requests. The MCP interface supports only structural validation, not canon byte verification. It is suitable for scenarios requiring checks of narrative continuity.