docs: add Hetzner cloud redundancy deployment runbook

RUNBOOK.md

@@ -35,3 +35,29 @@ Do not commit webhook URLs, tokens, secrets, database files, sessions, or live c
 ## Known Issue
 
 The root CHANGELOG.md was generated by autosync and includes live app/database file changes.
+## Karakeep Bookmarks
+
+Karakeep replaced Shaarli as the bookmark/read-it-later service.
+
+Public URL:
+
+https://links.kitestacks.com
+
+Cloudflare Tunnel service target:
+
+http://karakeep:80
+
+Docker path:
+
+~/docker/karakeep
+
+Containers:
+
+- karakeep
+- karakeep-meilisearch
+- karakeep-chrome
+
+Import path:
+
+Settings → Import / Export → Import Bookmarks
+