KarpelesLab / goro / 26001842083

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vm: lower runFirstClassCallable natively (free-function form)

\`func(...)\` syntax for free functions creates a Closure via
ClosureFromCallable on the resolved name. Added OP_FIRSTCLASS_CALLABLE
that pops a value, calls ClosureFromCallable, pushes the result. The
emitter takes the fast path when the target is a bare constant (most
common case: \`strlen(...)\`) by loading the name as a string literal.

Method / clone / dynamic-method first-class variants still
AST-delegate — they have static/nullsafe/magic-call branches that
need their own native lowering.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

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