* fix(scripts): reject a directory passed to support_bundle --out
`--out` names the zip, but the path went straight to `zipfile.ZipFile`, so
pointing it at an existing directory ended in a raw `PermissionError` traceback
(Windows) instead of the CLI's usual `error: ...` + exit 2.
`create_support_bundle` now raises the `ValueError` the CLI already maps to a
clean message, and the regression test pins exit 2 with no traceback.
* docs(scripts): say "zip file path" for support_bundle --out
Review nit: the help text said only "Output zip path", so the
file-not-directory contract the new validation enforces was invisible until a
run failed.
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Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
e830c85adf