Version documentation index and contracts

docs/INDEX.md

@@ -0,0 +1,38 @@
+# Enodia Sentinel Documentation Index
+
+Applies to package version: `0.7.0`
+Docs version: `0.7`
+Schema generation: `v1`
+
+This index is the versioned entry point for local operator documentation. When
+the package version changes, update `docs/VERSION.json` and this file in the
+same patch as any command, schema, or behavior documentation changes.
+
+## Operator References
+
+| Document | Purpose |
+|---|---|
+| [COMMAND_REFERENCE.md](COMMAND_REFERENCE.md) | Manpage-style CLI and service command contract. |
+| [SCHEMAS.md](SCHEMAS.md) | Stable JSON schema IDs and required v1 fields. |
+| [OPERATIONS.md](OPERATIONS.md) | Install checks, health checks, alert workflow, baseline hygiene, and evidence export. |
+| [RUNBOOKS.md](RUNBOOKS.md) | Incident response playbooks for common Sentinel findings. |
+| [RULES.md](RULES.md) | Generated built-in event-rule reference by SID. |
+
+## Product and Security References
+
+| Document | Purpose |
+|---|---|
+| [SPECIFICATION.md](SPECIFICATION.md) | Product model, current scope, data model, and acceptance criteria. |
+| [ROADMAP.md](ROADMAP.md) | Release tracks and planned sequencing. |
+| [THREAT_MODEL.md](THREAT_MODEL.md) | Trust boundaries, attacker assumptions, and non-goals. |
+
+## Versioning Rules
+
+- Documentation tracks the package minor line, not individual commits.
+- Additive JSON fields are allowed within a schema generation; required v1
+  fields stay stable.
+- Command behavior changes must update [COMMAND_REFERENCE.md](COMMAND_REFERENCE.md).
+- New operator-facing JSON contracts must update [SCHEMAS.md](SCHEMAS.md) and
+  compatibility tests.
+- Roadmap checkboxes should only be marked complete after code, docs, and tests
+  all reflect the shipped behavior.