Worktree semantic checks#66

Merged

cs01 merged 9 commits intomainfrom

worktree-semantic-checks

Feb 26, 2026

Commits on Feb 26, 2026

add closure mutation checker semantic pass that errors on post-capture reassignment
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fix native self-hosting: cast captures and destructuredNames to avoid union-type codegen issues
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fix object and map cases in scanExprForCaptures: use named ObjectProperty/MapEntry types for correct native GEP offsets
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add union type checker semantic pass that errors on mixed-representation type alias unions
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fix missing setUsesJson in JSON array index codegen causing undefined @csyyjson_arr_get
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consolidate setUsesJson calls to fix native self-hosting stage 1 crash
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fix codegen UB root cause: harden orchestrator fallbacks and sync reset() fields
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use super.reset() in LLVMGenerator to eliminate field sync problem
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update closure docs: post-capture mutation is now a compile error
cs01
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