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Supported standalone targets

Sifr 0.1.0 publishes exactly four standalone targets: There is no Windows standalone installer in this release. Package-manager distribution is also outside the stable standalone contract.

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VS Code extension

The qualified VS Code extension is sifr.sifr-vscode version 0.2.0. Extension and compiler versions are independent. Its advertised compiler range is >=0.1.0,<0.2.0, which includes the current stable compiler and any eligible 0.1.x rollback target. The extension remains a thin client. It starts the installed compiler with sifr lsp --stdio; parsing, type checking, diagnostics, formatting, linting, and testing remain compiler-owned.

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Rust interop

Stable Rust interop claims come only from stable_support_claims.json and the compatibility matrix. The public Rust interop reference lists every claim with its exact category and evidence scope. A contract-only row does not claim runtime-observed support, and future-owned runtime work remains unadvertised.