Drop the Briefwechsel route and the conversation derived-domain /
conversation-thread prose from the route tables (CLAUDE.md,
frontend/CLAUDE.md), ARCHITECTURE.md, the C4 frontend/backend diagrams,
and GLOSSARY.md (term + derived-domain list). Delete the two superseded
Briefwechsel design specs. Historical ADRs and dated analyses are left
untouched as point-in-time context.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
df0f4879b8