feat: Autorenkonventionen nach Eigentum geschnitten - kb/CONVENTIONS.md, deklarierte Collections (3.0.0)

Files changed:
- .gitea/workflows/ci.yml
- .wikitool-kb.json
- AGENTS.md
- CHANGES.md
- INSTALL.md
- README.md
- VERSION
- instructions/CONTRACT.md
- instructions/dev/testing-conventions.md
- instructions/german-terminology.md
- instructions/kb-profiles.md
- instructions/migrations/3.0.0-authoring-conventions.md
- instructions/private-instance.md
- instructions/setup-instance.md
- instructions/wiki-ingest/SKILL.md
- instructions/wiki-manage/SKILL.md
- kb/CONTRACT.md
- kb/CONVENTIONS.md
- kb/CONVENTIONS.md.template
- kb/comparisons/COLLECTION.md
- kb/concepts/COLLECTION.md
- kb/entities/COLLECTION.md
- kb/sources/COLLECTION.md
- tools/CONTRACT.md
- tools/README.md
- tools/chemenu/commands/dist_cmd.py
- tools/chemenu/commands/docs_verify.py
- tools/chemenu/commands/doctor.py
- tools/chemenu/commands/new_page.py
- tools/chemenu/conventions.py
- tools/chemenu/kb_collections.py
- tools/chemenu/kb_scan.py
- tools/chemenu/provenance.py
- tools/chemenu/sections.py
- tools/chemenu/tests/conftest.py
- tools/chemenu/tests/test_conventions.py
- tools/chemenu/tests/test_dist_cmd.py
- tools/chemenu/tests/test_doctor.py
- tools/chemenu/tests/test_new_page.py
- tools/chemenu/tests/test_types_cmd.py
- types/comparison.md
- types/concept.md
- types/entity.md
- types/source.md
- types/type-spec.md

instructions/CONTRACT.md

@@ -58,8 +58,10 @@ whether an instruction is still reachable, which is exactly why the answer means
 `instructions/dev/` boundary check below asks the opposite question - what would *dangle* in a
 distributed instance - and does scan README.md, because `dist export` ships it verbatim.
 
-Two kinds of file use the Manual tier today: [german-terminology.md](german-terminology.md), a
-vocabulary consulted on demand rather than a procedure, and every migration document (below).
+Three kinds of file use the Manual tier today: [german-terminology.md](german-terminology.md), a
+vocabulary consulted on demand rather than a procedure; [kb-profiles.md](kb-profiles.md), the
+catalogue of authoring profiles an instance may adopt into its own `kb/CONVENTIONS.md` and
+`COLLECTION.md` files; and every migration document (below).
 
 ## `instructions/migrations/`
 
@@ -153,7 +155,8 @@ What lives where:
 |-------|------|
 | [AGENTS.md](../AGENTS.md) | Invariants and routing - what must always hold |
 | `instructions/` | How the tooling is *operated* |
-| [kb/CONTRACT.md](../kb/CONTRACT.md) + each `COLLECTION.md` | How a page is *authored* |
+| [kb/CONTRACT.md](../kb/CONTRACT.md) | What the stack enforces about a page, in every instance |
+| `kb/CONVENTIONS.md` + each `COLLECTION.md` | What *this* instance decided about authoring - owned by the instance, shipped only as a `.template` |
 | [types/](../types/type-spec.md) | What a page structurally *is* |
 | [tools/CONTRACT.md](../tools/CONTRACT.md) | What each command does and how it fails |