[PR #36] Missing evm_version=paris in foundry.toml — PUSH0 opcode reverts on BSC

[obchain]

PR: #36 feat(contracts): Foundry workspace + CharonLiquidator skeleton

Problem: contracts/foundry.toml (lines 1-14) does not set evm_version. Default for solc 0.8.24 is shanghai, which emits PUSH0 opcode (EIP-3855). BSC mainnet (chain ID 56) runs a fork of go-ethereum that does not implement PUSH0. Any contract compiled with shanghai EVM target reverts on deployment to BSC.

Impact: Critical — contract cannot deploy to target chain. Silent failure: forge build succeeds locally, forge test passes against local Anvil defaulting to shanghai, but forge create --rpc-url $BNB_HTTP_URL produces a broken deployment.

Fix: Add to [profile.default] in contracts/foundry.toml:

evm_version = "paris"

Also add [profile.ci] / test annotation confirming fork test uses --evm-version paris when running against BSC fork.

[obchain]

Fixed in feat/11-foundry-skeleton (4bccdfa). Added evm_version = "paris" under [profile.default] in contracts/foundry.toml so solc no longer emits PUSH0 — BSC still runs on Paris and rejects the Shanghai opcode, which would revert deployed contracts on first touch.