sqlite3.OperationalError: unable to open database file, looks like failure to mkdir io.datasette.llm?

On a fresh install of llm v0.6 running on MacOS 13.4.1, installed from homebrew, I received

  File "/opt/homebrew/bin/llm", line 33, in <module>
    sys.exit(load_entry_point('llm==0.6', 'console_scripts', 'llm')())
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/llm/0.6/libexec/lib/python3.11/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/llm/0.6/libexec/lib/python3.11/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/llm/0.6/libexec/lib/python3.11/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/llm/0.6/libexec/lib/python3.11/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/llm/0.6/libexec/lib/python3.11/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/llm/0.6/libexec/lib/python3.11/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/llm/0.6/libexec/lib/python3.11/site-packages/llm/cli.py", line 372, in logs_turn_off
    path.touch()
  File "/opt/homebrew/Cellar/python@3.11/3.11.4_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/pathlib.py", line 1108, in touch
    fd = os.open(self, flags, mode)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/Users/<redacted>/Library/Application Support/io.datasette.llm/logs-off'

... or a similar error, after every prompt. I was unable to "llm logs off" because of a similar error ((FileNotFoundError: [Errno 2] No such file or directory: '/Users/<redacted>/Library/Application Support/io.datasette.llm/logs-off')).

On investigation it looked like the problem was that io.datasette.llm didn't exist and wasn't being created. I mkdir'ed it and the problems went away.

Start in llm/cli.py around line 372 and trace how the application-support path is obtained before logs-off calls path.touch(). Reproduce the fresh-install failure with the reported logs commands, then verify that a fresh install creates io.datasette.llm and that prompts and “llm logs off” no longer raise FileNotFoundError.