dotCooCoo 74caec60d4 Commands: the View commands check their params against machine-readable schemas ...

A new standalone crate, vectorcraft-apischema, describes a command's
parameters: type (number with range and unit, integer, boolean, string,
enum, id, id list, color, point, object, array), whether each is
required, the default of an omitted value, whether null counts as
omitted, the API levels it was added and deprecated at, and the lenient,
cost and writes fields. It validates a params object and names the
parameter of the first problem, writes the params text, writes the
schema in the shape of a JSON Schema 2020-12 object schema, and hashes a
set of schemas.

CommandSpec gains an optional schema (both builders: the cmd! macro and
the text style specs). Session::execute checks the params of a command
that has one before anything else, refusing a value of the wrong type,
out of range or not in its list, a missing parameter or an unknown key
with an error naming the parameter, and fills in defaults; the journal
keeps the params as given. engine.commands lists each schema.

The six commands in cmd/views.rs have schemas, and their params text is
the text the schema writes. schemas::API_VERSION is 1, and a test fails
when a schema changes without a new row in SCHEMA_HASHES.

Docs: docs/mcp.md (Parameter schemas), docs/target-app-parity.md.

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src

Commands: the View commands check their params against machine-readable schemas

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affinity-corpus.sha256

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Cargo.toml

fix(xtask): validate workspace lint policy

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pngsuite.sha256

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