Address review findings on `bm cloud share`:
- `create` re-wrapped the `typer.Exit(1)` from `_parse_expires_at()` as a
spurious "Unexpected error: 1" trailing line because the broad
`except Exception` caught it (typer.Exit subclasses Exception). Parse and
validate --expires-at before entering the try block so the error surfaces
as a single clean message, and add the `except typer.Exit: raise` guard for
parity with `update`/`revoke`.
- Strengthen test_create_share_invalid_expires_at to assert
"Unexpected error" is absent, which was masking the bug.
- Drop unused PublicShareResponse/PublicShareListResponse schemas; responses
are parsed as raw dicts, so the schemas were dead code.
Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Drew Cain <groksrc@gmail.com>
Drew Cain
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