object.envelope.makeWithWarp, resetWithWarp and options read `style`
and `orientation`, and options read `preserveShape`, as text and
ignored any other value, so `{"style": 5}` kept the default style and
`{"orientation": "diagonal"}` kept the current orientation. They now
return "`style` must be a string" or "`preserveShape` must be a
string" for a value other than text or null, and "`orientation` must
be one of horizontal, vertical" for any other orientation, through
the shared `choice` helper. object.envelope.options checks the warp
keys whatever is selected, so a call with no envelope or only mesh
envelopes selected gets the same errors, an unknown style name
included. Omitted and null values keep today's defaults.
Docs: docs/mcp.md, docs/target-app-parity.md.
dotCooCoo