docs: Exit 42 als Haltung und die Adoption eines neuen Templates nachgezogen (#119)

Files changed:
- CHANGES.md
- VERSION
- docs/ownership-and-templates.md
- docs/why-gates-are-code.md

docs/ownership-and-templates.md

@@ -149,7 +149,15 @@ becomes visible once an upgrade is a command rather than a hand-run copy:
 - **`.template`-sourced files** - `USER.md`, `SOUL.md`, `kb/CONVENTIONS.md`, each
   `kb/<name>/COLLECTION.md`, `ENVIRONMENT.md`, the `root: kb` type-specs - are never written by
   an upgrade at all. The distribution ships only the `.template` beside them, so the filled file
-  is out of reach by construction rather than by a rule someone has to remember.
+  is out of reach by construction rather than by a rule someone has to remember. The same
+  property has a second face on the way in: when a release ships a `.template` for a type or
+  collection the instance does not have *yet*, the upgrade writes the template and stops - it
+  cannot write the filled file without deciding the instance's own language and wording for it.
+  Adoption is therefore an act the instance performs, and where the stack *requires* that type
+  (the `source` idiom, and `project` since 7.0.0) an upgrade that skips it leaves a tree
+  `docs verify` refuses. That is the ownership boundary working rather than a gap in it, but it
+  is the one shape in which "the upgrade never writes this file" turns into work somebody has to
+  do; `instructions/upgrade-instance.md` carries the step.
 - **Seeded-once files** - `.wikitool-kb.json`, `CHANGES.md`, `kb/log.md`, `raw/.gitkeep` - are
   written into a *new* instance by `dist export` and belong to the instance from then on. They
   are the awkward category: they sit in the release stamp's file list like any other shipped