feat(tycho-execution): add BopAMM executor and swap encoder

[tvinagre]

What

Execution support for BopAMM (Bebop's on-chain PMM): BopAMMExecutor.sol, BopAMMSwapEncoder (vm:bopamm), config entries, and tests — same structure as the FermiSwap execution files in #1034.

• Executor: ProtocolWillDebit — the TransferManager pulls tokenIn to the router and approves the BopAmmV2 settlement (0xdB13ad0fcD134E9c48f2fDaEa8f6751a0F5349ca), which debits via allowance and sends output to the recipient param (outputToRouter = false). swap() calls settlement.swap(tokenIn, tokenOut, amountIn, 0, block.timestamp, receiver); protocol-level minAmountOut is 0 because the router enforces the user's minimum and the Dispatcher measures output via balance diff. No callbacks.
• Encoder: packed (tokenIn, tokenOut) — 40 bytes; the settlement is an executor immutable and the traded book follows from the token pair. Ethereum-only.
• Wiring: registry entry, Constants.sol, TychoRouterTestSetup.sol (executors 21→22), test_executor_addresses.json, deploy-executors.js.

Timestamp gate

BopAMM swaps only succeed in a block whose timestamp equals the book's committed registry update (StaleUpdate() otherwise — on-chain takers need builder bundles). Fork tests pin block 25266710 (a quote-commit block for the WETH/USDC book) and fund the maker wallet, since the venue's quote caps at the committed lane size while settlement transfers come from the maker's inventory.

Testing

• Rust: encoder unit tests (both directions + non-Ethereum rejection) and test_single_encoding_strategy_bopamm_weth_usdc; clippy -D warnings and fmt clean.
• Solidity: 9 executor tests (decode, transfer data, direct swap, stale revert, cross-language decode of Rust-generated calldata) + a full TychoRouter singleSwap integration test, all passing on a mainnet fork. Pre-existing TychoRouterSingleSwap suites re-run green (19/19).

Note for whoever merges second (#1034 or this)

Both PRs append the 22nd executor to the deterministic test deployment sequence, so both predict the test executor address 0xe8dc788818033232EF9772CB2e6622F1Ec8bc840. The PR that lands second must re-derive its test_executor_addresses.json entry (the executor moves to position 23) and regenerate calldata.txt.

Related: #1081 (substreams), #1082 (simulation adapter).

🤖 Generated with Claude Code

[tvinagre]

Superseded by #1095, which aggregates the substreams, simulation adapter, and execution layers into one branch (reconciled against current main — FermiSwap #1034 had since merged and shares the execution wiring). Closing in favor of that PR.