feat!: docs/ sorted into tutorials, how-to, reference, explanation plus unshipped docs/dev/; explanation pages and developer guide moved, human docs English (#187)

The seven explanation pages move to docs/explanation/ without a stub, DEVELOPMENT.md becomes docs/dev/development.md (translated to English), dist export leaves docs/dev/ out, docs verify rejects a file outside the five areas, and AGENTS.md states that the stack's human documentation is English. Required migration 9.0.0-docs-diataxis rewrites the old path in an instance's own kb/CONVENTIONS.md.

Files changed:
- .wikitool-kb.json
- AGENTS.md
- CHANGES.md
- CLAUDE.md
- DEVELOPMENT.md
- INSTALL.md
- README.md
- VERSION
- docs/dev/development.md
- docs/explanation/README.md
- docs/explanation/knowledge-and-commitment.md
- docs/explanation/language-boundaries.md
- docs/explanation/model-and-effort-selection.md
- docs/explanation/ownership-and-templates.md
- docs/explanation/pipeline-rationale.md
- docs/explanation/version-model.md
- docs/explanation/why-gates-are-code.md
- docs/how-to/README.md
- docs/knowledge-and-commitment.md
- docs/language-boundaries.md
- docs/model-and-effort-selection.md
- docs/ownership-and-templates.md
- docs/pipeline-rationale.md
- docs/reference/README.md
- docs/tutorials/README.md
- docs/version-model.md
- docs/why-gates-are-code.md
- instructions/CONTRACT.md
- instructions/dev/dev-setup.md
- instructions/dev/doc-pull-through.md
- instructions/dev/stack-close/SKILL.md
- instructions/dev/stack-mode.md
- instructions/gtd-weekly-review/SKILL.md
- instructions/ingest-queue.md
- instructions/migrations/6.0.0-type-guidance-split.md
- instructions/migrations/9.0.0-docs-diataxis.md
- instructions/upgrade-instance.md
- kb/CONVENTIONS.md
- kb/CONVENTIONS.md.template
- tools/CONTRACT.md
- tools/chemenu/commands/dist_cmd.py
- tools/chemenu/commands/docs_verify.py
- tools/chemenu/commands/new_page.py
- tools/chemenu/commands/task_cmd.py
- tools/chemenu/tasks/protocol.py
- tools/chemenu/tests/test_dist_cmd.py
- tools/chemenu/tests/test_docs_verify.py
- tools/chemenu/tests/test_git_publish.py
- tools/chemenu/tests/test_toc.py
- types/type-guidance.md

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

CHANGES.md

@@ -14,11 +14,18 @@ place only: `instructions/dev/version-parts.md` § The candidate model.
 
 ---
 
-## 8.1.0-beta.2 - 2026-10-06 - version bump: Abschlussmeldung nennt Stichpunkt oder Themenabsatz statt pauschal Prosa
+## 9.0.0-beta.1 - 2026-10-06 - docs/ sorted into tutorials, how-to, reference and explanation plus an unshipped docs/dev/; explanation pages moved, developer guide moved and translated, human docs English
 
 **Author:** Torben Nehmer
 
+**Breaking Change:** The seven pages that sat directly in docs/ now live in docs/explanation/, with nothing left at the old paths. An instance's own kb/CONVENTIONS.md still links ../docs/language-boundaries.md, so docs verify reports a dead link after the upgrade until the required migration document rewrites the path - step 12 of the upgrade.
+
+**Migration:** required - instructions/migrations/9.0.0-docs-diataxis.md
+
 <!-- wikitool:bumps -->
+**High impact**
+- docs/ sorted into tutorials, how-to, reference and explanation plus an unshipped docs/dev/; explanation pages moved, developer guide moved and translated, human docs English
+
 **Medium impact**
 - Changelog kompakt: ein Absatz pro Thema, Größenbudget, Migrationsverweis
 
@@ -26,6 +33,16 @@ place only: `instructions/dev/version-parts.md` § The candidate model.
 - version bump: Abschlussmeldung nennt Stichpunkt oder Themenabsatz statt pauschal Prosa
 <!-- /wikitool:bumps -->
 
+### Doku-Gerüst nach Diátaxis unter `docs/` (#187)
+
+`docs/` hat vier Bereiche – `tutorials/`, `how-to/`, `reference/`, `explanation/`, je mit einer
+`README.md` – und `docs/dev/`, das `dist export` wie `instructions/dev/` weglässt. Die sieben
+Erklärseiten liegen jetzt unter `docs/explanation/`, ohne Stub am alten Ort; `DEVELOPMENT.md` ist
+als `docs/dev/development.md` englisch. `docs verify` meldet jede Datei, die direkt in `docs/` oder
+außerhalb der fünf Bereiche liegt. `AGENTS.md` § File naming legt fest, dass die menschliche Doku
+des Stacks englisch ist, unabhängig von `language:`. Das bestehende `kb/CONVENTIONS.md` einer
+Instanz verlinkt noch den alten Pfad, deshalb führt das Pflicht-Migrationsdokument ihn nach.
+
 ### Changelog-Einträge mit Größenbudget und Migrationsverweis (#184)
 
 Ein Eintrag bekommt `###`-Abschnitte pro Thema statt pro Bump; eine kleinere Änderung steht nur