feat: add MegaETH chain support #11563
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Integrates MegaETH as a second-class citizen chain following the established pattern. **Packages:** - Add MegaETH chain/asset constants and references to @shapeshiftoss/caip - Add MegaEthMainnet to KnownChainIds enum in @shapeshiftoss/types - Create MegaETH chain adapter extending SecondClassEvmAdapter - Add MegaETH to evmChainIds, ChainSpecific types, and base utilities - Add megaethAssetId to FEE_ASSET_IDS array - Define viem client for MegaETH (chain ID 4326) **Application:** - Create MegaETH plugin with chain adapter registration - Add MegaEth feature flag to preferences slice - Add VITE_MEGAETH_NODE_URL and VITE_FEATURE_MEGAETH to config - Add MegaETH CSP headers for RPC endpoint - Add MegaETH to AssetService feature flag filter - Add MegaETH support to wallet compatibility hooks - Add MegaETH to portfolioSlice utilities (accountIdToLabel, isAssetSupportedByWallet) **Dependencies:** - Upgrade viem from 2.40.3 to 2.43.5 **Notes:** - Currently targeting testnet (Chain ID 4326 - Frontier) - TODO markers added for mainnet migration when whitelisted - Type errors for supportsMegaEth expected until hdwallet-core published
Update all @shapeshiftoss/hdwallet-* packages to 1.62.35-megaeth.0 from local verdaccio registry.
Add VITE_MEGAETH_NODE_URL and VITE_FEATURE_MEGAETH to: - .env (feature flag disabled by default) - .env.development (feature flag enabled for dev)
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Add explicit formatting rules from ESLint/Prettier config to avoid future lint diffs: - Single quotes, no semicolons - 100 char line width, trailing commas - Arrow function parens rules - Named exports only (except stories/test mocks) - Type import preferences
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Description
Web fren of shapeshift/hdwallet#778
TODO: switch to MegaETH mainnet and test me
Issue (if applicable)
N/A
Risk
TODO
TODO
Testing
Engineering
TODO
Operations
TODO
Screenshots (if applicable)
TODO