fix: types/type-spec.schema.yaml enforced against real type-spec frontmatter, doc-pull-through.md docs/-page count corrected (closes #105)

Files changed:
- CHANGES.md
- VERSION
- instructions/dev/doc-pull-through.md
- tools/CONTRACT.md
- tools/chemenu/commands/docs_verify.py
- tools/chemenu/tests/test_docs_verify.py
- types/type-spec.md
- types/type-spec.schema.yaml

instructions/dev/doc-pull-through.md

@@ -37,7 +37,7 @@ touched; a row that does not apply needs no action.
    | A stage's authoring rules (`raw/`, `kb/`, `types/`, `reports/`, `work/`, `tools/`, `instructions/`) | The touched `<stage>/CONTRACT.md` |
    | A rule, gate, or invariant `AGENTS.md` itself states | The relevant `AGENTS.md` section (Invariants, Gates, File naming, Routing, ...) |
    | A workflow, stage, or command a human operates by hand | Whichever of `README.md`, `EVALS.md`, `tools/README.md`, `INSTALL.md`, `DEVELOPMENT.md` names it - AGENTS.md § File naming says which document is for which reader |
-   | The reasoning behind a gate, boundary, or design decision | The `docs/` page that carries it, if one exists (AGENTS.md § File naming lists all four) |
+   | The reasoning behind a gate, boundary, or design decision | The `docs/` page that carries it, if one exists (AGENTS.md § File naming lists all five reached from AGENTS.md itself, plus a sixth reached only from CLAUDE.md) |
    | A skill's own step sequence or catalogue | The skill's `SKILL.md` source under `instructions/<name>/` or `instructions/dev/<name>/` |
 
 3. **A heading you changed means a table of contents to regenerate - by the tool, never by