add ink-mainnet (57073) support

- factory: 0x640887a9ba3a9c53ed27d0f7e8246a4f933f3424 (Protofire deployment, adopted via Uniswap/contracts#153)
- start block: 284117 (factory deployment block)
- reference token: WETH (0x4200…0006)
- USD reference: WETH/USDC.e pool at 0xd5aa1bd330a94332f071da5bb3651ec372ea6926
- whitelist: WETH, USDC.e (USDC.e at 0xF1815b…45D14)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>