- rootUnion: decline a schema carrying BOTH oneOf and anyOf rather than
reading one and silently dropping the other's constraints.
- SchemaForm: handle `const` before every type dispatch and for every
constant type, so a numeric/boolean constant, or a schema carrying both
`const` and `enum`, can no longer offer a forbidden value.
- collectSchemaDefaults / TUI initialValue: `const` outranks `default`,
which is an annotation a schema may set to something its const rejects.
- convertToolParameters: resolve from the first branch's merged schema, so a
branch's specialization of a root-declared property is what types the arg.
- TUI: ink-form keys values by field name across the whole form, so two
branches' `kind` were one field and the later section's initial value
decided what the earlier submitted. Branch fields now render under prefixed
names behind a Variant select, and decodeFormValues translates back on
submit, dropping every branch but the chosen one.
Signed-off-by: cliffhall <cliff@futurescale.com>
A tool's `inputSchema` may carry composition keywords at its root — the
2026-07-28 revision makes this explicit — but both form builders enumerate
the root's `properties` and nothing else. A schema keeping its fields on
`allOf`/`oneOf`/`anyOf` branches therefore rendered no controls at all: no
branch picker, no fields, not even the raw-JSON fallback a union-typed
*property* falls back to, so the tool could only be called with empty
arguments.
Adds `core/json/rootUnion.ts`, one flattening shared by all three clients so
they cannot drift on which schemas they can render:
- `allOf` is merged unconditionally (conjunctive — there is no choice to
present), a root `oneOf`/`anyOf` is returned as branches.
- Web `SchemaForm` renders a Variant picker above the fields and prunes the
outgoing branch's values on a switch, since they are no longer visible and
would describe a shape the call is not making.
- TUI `schemaToForm` gives each branch its own section with optional fields —
ink-form is static, and only one alternative applies to a call.
- `convertToolParameters` looks through the branches, so a CLI `--tool-arg`
is typed by the schema that declares it rather than sent as a string.
Required-field gating asks whether *any* branch is satisfied, which is
selection-independent and never blocks arguments the schema accepts. A
`const` is seeded like a `default` and rendered read-only: it admits exactly
one value, so anything else the user could type produces a rejected call.
Adds a `root-union-schemas-http.json` showcase server.
Closes#2123
Signed-off-by: cliffhall <cliff@futurescale.com>
