typecheck: clarify missing CHECK TYPE expression
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@@ -53,6 +53,7 @@ Ready now:
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- `TYPE OF` and `CHECK TYPE`
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- `CHECK TYPE` gives a direct repair hint when the learner forgets the `IS` keyword, for example `CHECK TYPE score` reports `CHECK TYPE needs IS. Try: CHECK TYPE score IS NUMBER.`
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- `CHECK TYPE` gives a direct repair hint when `IS` has no expected type, for example `CHECK TYPE score IS` reports `CHECK TYPE score needs a type after IS. Try: CHECK TYPE score IS NUMBER.`
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- `CHECK TYPE` explains when the learner leaves out the expression as well, for example bare `CHECK TYPE` reports `CHECK TYPE needs an expression, IS, and a type. Try: CHECK TYPE score IS NUMBER.`
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- `CHECK TYPE` rejects extra words after a valid expected type with a direct repair hint, so `CHECK TYPE score IS NUMBER TEXT` explains that only one type belongs in the check
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- `CHECK TYPE` rejects unknown expected type names with a beginner-facing list of supported types
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- typed list/map checks through `claro typecheck`, including a nested `LIST OF MAP` insertion example
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