types/: Seiten-Type-Spec-Anleitungsprosa in stackeigene guidance-Datei ausgelagert (schliesst #104)

Files changed:
- AGENTS.md
- CHANGES.md
- VERSION
- docs/ownership-and-templates.md
- instructions/migrations/6.0.0-type-guidance-split.md
- instructions/setup-instance.md
- tools/CONTRACT.md
- tools/chemenu/commands/dist_cmd.py
- tools/chemenu/commands/types_cmd.py
- tools/chemenu/tests/test_dist_cmd.py
- tools/chemenu/tests/test_dist_upgrade.py
- tools/chemenu/tests/test_type_resolver.py
- tools/chemenu/tests/test_types_cmd.py
- tools/chemenu/type_resolver.py
- tools/chemenu/types_core.py
- types/comparison.guidance.md
- types/comparison.md
- types/concept.guidance.md
- types/concept.md
- types/entity.guidance.md
- types/entity.md
- types/source.guidance.md
- types/source.md
- types/type-guidance.md
- types/type-guidance.schema.yaml
- types/type-spec.md

AGENTS.md

@@ -99,6 +99,7 @@ What a file is called says who it is for and how it is loaded. This is a rule, n
 | `instructions/<name>.md` | Agents | By link, or on explicit request |
 | `instructions/<name>/SKILL.md` | Agents | By the harness, once published |
 | `types/<name>.md` | Agents + validator | Via `tools/wikitool types describe`. Split by `root:`: a page type-spec (`root: kb`) belongs to the instance and ships as `.template`; one describing a stack artifact ships verbatim |
+| `types/<name>.guidance.md` | Agents + validator | Via `tools/wikitool types describe`, composed with the `types/<name>.md` it documents. Stack-owned regardless of the type-spec's own `root:` - it ships verbatim and is optional, present only where the type-spec declares `guidance:` |
 | `docs/<name>.md` | Agents and humans | By link, or on explicit request - never automatically, and never as instruction |
 | `INDEX.md` | Both | Generated - never hand-edited |