Mirrors the English tree (docs/de/{features.md,manual/*,developer/
extending.md}) so relative links between translated guides resolve
within the German set; links into untranslated areas (self-hosting,
architecture, deploy) point at the English files and say so. Every
quoted UI label matches the actual German interface strings. Each
pair of files cross-links the other language; English stays
authoritative when the two diverge.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EwZ4jR4KFAPvpjWevfUGX1