docs toc/verify: die .template-Form einer Referenzdatei steht im Dateisatz, Version 6.0.1 freigegeben (schliesst #106)

Files changed:
- CHANGES.md
- VERSION
- instructions/dev/doc-pull-through.md
- kb/CONVENTIONS.md.template
- tools/CONTRACT.md
- tools/chemenu/commands/docs_verify.py
- tools/chemenu/tests/test_docs_verify.py
- tools/chemenu/tests/test_toc.py
- tools/chemenu/toc.py

instructions/dev/doc-pull-through.md

@@ -43,7 +43,8 @@ touched; a row that does not apply needs no action.
 3. **A heading you changed means a table of contents to regenerate - by the tool, never by
    hand.** Every reference file over 100 lines carries one (`AGENTS.md`, the stage contracts,
    `kb/CONVENTIONS.md`, each `COLLECTION.md`, the flat `instructions/**.md` form, the
-   type-specs, the `docs/` pages - a `SKILL.md` is the one exception). Adding, renaming,
+   type-specs, the `docs/` pages - each with the `<name>.template` it ships as, where one
+   exists, and a `SKILL.md` the one exception). Adding, renaming,
    reordering or deleting a `##`/`###` heading in one of them makes its region stale, and
    `docs verify` fails on stale exactly as it fails on missing: