feat: a subtype gets its own page skeleton from types/<type>.<value>.md (#117)

Files changed:
- AGENTS.md
- CHANGES.md
- README.md
- VERSION
- docs/ownership-and-templates.md
- instructions/evolve-subtypes.md
- instructions/setup-instance.md
- instructions/subtype-templates.md
- instructions/upgrade-instance.md
- tools/CONTRACT.md
- tools/chemenu/commands/dist_cmd.py
- tools/chemenu/commands/docs_verify.py
- tools/chemenu/commands/new_page.py
- tools/chemenu/tests/test_dist_cmd.py
- tools/chemenu/tests/test_docs_verify.py
- tools/chemenu/tests/test_new_page.py
- tools/chemenu/tests/test_toc.py
- tools/chemenu/tests/test_type_resolver.py
- tools/chemenu/toc.py
- tools/chemenu/type_resolver.py
- types/concept.decision.md
- types/entity.guidance.md
- types/entity.md
- types/entity.person.md
- types/type-spec.md

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SnAJ7Z3CpVD3PRbN73QtU2

README.md

@@ -103,7 +103,8 @@ chemenu/
 │   ├── type-guidance.md # Contract for the *.guidance.md files below
 │   ├── entity.md       # Entity type config + template (+ .schema.yaml)
 │   ├── entity.guidance.md # Its stack-owned authoring prose, shipped verbatim
-│   ├── concept.md      # Concept type config + template (+ .guidance.md)
+│   ├── entity.person.md # Subtype template: what `new` scaffolds for entity_type=person
+│   ├── concept.md      # Concept type config + template (+ .guidance.md, + concept.decision.md)
 │   ├── source.md       # Source type config + template (+ .guidance.md)
 │   ├── comparison.md   # Comparison type config + template (+ .guidance.md)
 │   ├── project.md      # Project (Vorhaben) type config + template, no guidance file
@@ -523,7 +524,7 @@ This wiki is tailored for IT work with:
 - **Entity types** specific to software development and systems
 - **Relationship types** like `hängt ab von`, `verwendet`, `implementiert` - the vocabulary is in
   [kb/CONVENTIONS.md](kb/CONVENTIONS.md), because it is this instance's rather than the stack's
-- **Templates** for projects, systems, tools, technologies, ADRs
+- **Templates** per page type, and per subtype where its pages need a shape of their own - a person, a decision record (ADR)
 - **Guidelines** for documenting technical decisions
 - **Cross-reference patterns** for code and architecture