The auto-commit bash and Python twins strip a leading/trailing quote from
the configured `message:` value with an end-of-string-anchored quote strip.
When the YAML value has trailing whitespace after the closing quote
(`message: "Done" `), the close-quote strip is anchored to end-of-string,
so it never matches the quote (spaces follow it). The commit message then
keeps a dangling quote and trailing spaces (`Done" `).
The PowerShell twin already .Trim()s before stripping, so it produced the
clean `Done`. This left the three script variants out of parity. Trim the
value before stripping quotes in the bash and Python twins so all three
agree.
Verified at the exact-code level: the old bash sed pipeline yields
`spec done" ` and the new one `spec done`; the Python _strip_quotes matches.
Add a parity regression test with trailing whitespace after the closing
quote (runs under CI where Git bash is resolvable).
6e8623bbd7