feat(primitives): tempo transaction support #12859
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onbjerg force-pushed the onbjerg/tempo-tx branch from be8b7f2 to 6c34330 Compare 
onbjerg force-pushed the onbjerg/tempo-tx branch from 6c34330 to fb4b0bb Compare onbjerg requested review from 0xrusowsky, DaniPopes, grandizzy, mattsse and zerosnacks as code owners 3 tasks
onbjerg force-pushed the onbjerg/tempo-tx branch 3 times, most recently from 02f2ba3 to f08e112 Compare Add tests for Tempo (type 0x76) transaction encoding/decoding and receipt handling in foundry-primitives. Transaction tests (envelope.rs): - test_decode_encode_tempo_tx: Uses real testnet transaction with WebAuthn signature, verifies decode, field values, hash, round-trip encoding, and sender recovery - test_tempo_tx_type: Verifies FoundryTxType::Tempo properties Receipt tests (receipt.rs): - encode_tempo_receipt: Tests encoding with logs, round-trip decode - decode_tempo_receipt: Tests 2718 encode/decode - tempo_receipt_from_parts: Tests FoundryReceiptEnvelope::from_parts - tempo_receipt_map_logs: Tests map_logs transformation Test vector from Tempo testnet: https://explorer.testnet.tempo.xyz/tx/0x6d6d8c102064e6dee44abad2024a8b1d37959230baab80e70efbf9b0c739c4fd b
onbjerg force-pushed the onbjerg/tempo-tx branch from f08e112 to af0f00a Compare onbjerg force-pushed the onbjerg/tempo-tx branch from e1a3604 to 1ad0932 Compare 
zerosnacks approved these changes Dec 19, 2025
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Motivation
Upstreaming Tempo support requires us to add appropriate encoding/decoding for Tempo transactions.
Solution
Add Tempo transactions to
FoundryTxEnvelopeand related types. This will affect cast.Note that this largely ignores the implementation in
FoundryTransactionRequestsince this is not needed for base-level functionality.This also stubs out Anvil support/leaves out the impl details of that since @zerosnacks is working on it + it would blow up the PR in scope.
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