``workdir`` is an absolute path, and its default is the home directory.
``agent/instructions.md`` holds the user's instructions: who they are,
how their files are organized, and how they want work done. The prompt
-ends with them, and a change applies at the next call.
+ends with them, and a change applies at the next call. The agent can
+propose a change to the file, and it makes the change only after the
+user agrees.
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User service