Fixes the four findings of the sixth review: `snapshot remove` with
`--local-only`, the two comma-chained permission lists, six undefined terms,
and the sentence about an unfinished snapshot in the local index.
Then reads every sentence of `README.md`, `ARCHITECTURE.md`,
`docs/DATAMODEL.md`, `docs/REPOSTRUCTURE.md` and the comments in
`config.example.yml` against the code for four faults: a command's needs or
behaviour stated without regard to a flag, a false absolute, three or more
things chained with commas, and a technical word not defined on first use.
Each sentence changed is listed on the pull request.
The help string of `snapshot remove --dry-run` now says it needs no
permission to delete.
Model: fable-5-1
Under `--json`, `snapshot list` prints no warning for a snapshot with
no manifest at the destination; the README now says so and points to
`remote_present`. The stdout list names `snapshot create` as well as
`snapshot restore` for the per-file error lines. `snapshot create`
stops "before it writes anything at the destination", since the
destination binding is saved first. `prune_grace_period` is a Go
duration, so the README now says only which units it rejects. The
commands that run while a backup is in progress are a bulleted list.
Model: fable-5-1
Warnings and the per-file errors of `snapshot restore` are written to stdout
through `internal/ui`, so the stdout list names them and the redirect example
says a file captures them. Only `make test` and `make lint` run inside Docker;
`make test-coverage` runs on the host. Some `Makefile` targets (`build`,
`clean`, `deps`, `test-coverage`, `local`, `install`) call no `script/` entry,
so "Most" replaces "only".
Fixes the two findings of the fourth review of
#399.
Model: fable-5-1