diff --git a/CLAUDE.md b/CLAUDE.md
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--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -2,6 +2,15 @@
 
 This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
 
+> **Cross-project working conventions are canonical in the `management` repo's
+> [`CLAUDE.md`](https://git.lab/axion1337.chat/management/-/blob/main/CLAUDE.md)**
+> (readable from anywhere via the Gitea mirror
+> `https://rohana.axion1337.de/sorb/management`): repo topology & mirror rules,
+> the Kanban framework (status labels, WIP limit 2, ADR duty — including for
+> permanent rule exceptions), deploy-handover/AAR procedures, secrets handling,
+> and the Karpathy guidelines. Every agent session must follow it; this file
+> covers only what is specific to this repository.
+
 ## Overview
 
 This is a **GitOps-based Kubernetes deployment** of **Element Server Suite (ESS Community v26.4.0)**, a complete Matrix homeserver stack. The repository contains Infrastructure-as-Code using **FluxCD** for GitOps synchronization, with encryption (SOPS/age), service mesh (Traefik), certificate management (Cert-Manager), and auxiliary services like Authentik, TURN/coturn, Draupnir (moderation), ClamAV (content scanning), and Grafana monitoring.