transpile: Refactor, document and correct uses of `used()` flag - #1975

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Rua wants to merge 7 commits into

immunant:masterfrom

Commits on Aug 18, 2026

transpile: Rename `ExprContext::used` to `is_used` and document it
Rua
committed
1ff24a5
transpile: Replace `ExprContext::is_used` and `is_unused` with direct access
Rua
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5b9770c
transpile: Pass `used()` for conditions of control flow
Rua
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28179a9
transpile: Pass `used()` for macro initializer
Rua
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be63aa3
transpile: Pass `used()` correctly for assignment operands
Rua
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4de31ca
transpile: Set `is_used` to `false` by default at the top level
Rua
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9809867
transpile: Remove `used()` for children of pure expressions
Rua
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c6d949c