6c92b6358d
Full documentation hub replacing the release-notes-only view: - Handbook pages (docs/handbook) for all features and admin/betrieb - API reference generated from lib/api-spec/openapi.yaml via scripts/src/generate-docs.mjs (replaces sync-release-docs.mjs): endpoints, schemas/fields, search index, per-release snapshots - mkdocs layout: sidebar nav, right TOC with scrollspy, search overlay, version dropdown, repo link - FieldHelp (?) buttons in forms linking to reference field docs - v0.7.0 release notes backfilled, v0.8.0 release notes added