feat: add wasm-dot package for Polkadot transaction building and decoding#145

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Commits on Feb 19, 2026

feat: add wasm-dot package for Polkadot transaction building and decoding
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chore: mark wasm-dot as private (not ready for publishing)
lcovar
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Commits on Feb 20, 2026

refactor: parseTransaction returns DotTransaction with .parse() method
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