- rootUnion: a branch restating a constraint the root states differently is
declined (keywords at one level are conjunctive and no intersection is
computed here), while annotations may disagree freely. An `allOf` with a
member it cannot fold in — JSON Schema's boolean form, or a $ref whose
constraints are unknown rather than absent — is left intact instead of
merged-and-stripped, which would turn an unsatisfiable schema into a
fillable form.
- rootUnion: `declaresAnyFields` counts the raw composition members, so
`hasInputFields` reports fields for a union the resolver declines and an
App tool is never auto-invoked with empty arguments.
- SchemaForm: the picker opens on the branch the supplied values identify
(an App deep link overlays its args, so they can name another branch), and
a branch switch no longer carries a value the outgoing branch declared —
the branches may type the same name differently.
- TUI: a base property some branch redeclares is offered in EVERY branch's
section under that branch's inherited or specialized declaration, so a
branch that does not redeclare it can still supply a required root
argument.
Signed-off-by: cliffhall <cliff@futurescale.com>