propose a change to the file, and it makes the change only after the
user agrees.
+A permanent child agent lives in ``agent/children/NAME/`` with the same
+files as the root. Create its directory and ``config.json`` by hand
+before startup. Use the root config fields with a separate random ID,
+set ``name`` to ``NAME``, and add ``parent`` with the root name and
+``responsibility`` with the child's area. The daemon opens all children
+at startup. A missing or invalid child config stops startup. Only one
+level of children is supported.
+
+Each child has its own memory, model client, usage file, subagents,
+schedules, and turn loop. Its prompt limits work to its area, asks for
+only reports that need the parent or the user, and permits an empty
+reply. Children have no WhatsApp tools and draft replies instead of
+sending them. Clients and WhatsApp still address only the root. There
+are no messages or tools between parent and child agents. A child's
+saved schedules and subagents can resume at startup. The ready log line
+lists the child names.
+
**************
User service
**************
ONECHAT_DIR=EMPTY_DATA_DIR onechat restore BACKUP_FILE.tar.gz
The daemon flushes memory and holds its write locks during the agent
-copy. It also flushes and locks the subagent logs. It copies the
-WhatsApp session with SQLite ``VACUUM INTO``, not as raw database files.
-It then compresses the copy and installs the archive through a temporary
-file and a rename. Use a backup path outside the data directory.
+copy. It also flushes and locks the child agents and all subagent logs.
+It copies the WhatsApp session with SQLite ``VACUUM INTO``, not as raw
+database files. It then compresses the copy and installs the archive
+through a temporary file and a rename. Use a backup path outside the
+data directory.
The archive includes configuration, instructions, the log, tree,
-indexes, views, layout, schedules, subagents, Telegram offset, tokens,
-and WhatsApp state and session. It excludes sockets, lock files,
+indexes, views, layout, schedules, subagents, children, Telegram offset,
+tokens, and WhatsApp state and session. It excludes sockets, lock files,
``probe/``, and the ``agent-backup-*`` import copies. Links and special
files fail, rather than enter the archive. **The archive holds
secrets**, including login tokens, the Telegram bot token, and the