Add CashCatHook allowlist entry for Robinhood

[KFCcook-lab]

Summary

Adds CashCatHook to the v4 hook address allowlist for Robinhood Chain.

This follows the same routing-api integration path as PR #1407, which added ROBINS_WORLD_LAUNCHPAD_HOOK_ON_ROBINHOOD by updating lib/util/hooksAddressesAllowlist.ts.

Details

• Chain: Robinhood Chain
• Chain ID: 4663
• Hook: CashCatHook
• Hook address: 0xEfe669814e5Eec33406Bd50ffa8331618D076aEc
• Explorer: https://robinhoodchain.blockscout.com/address/0xEfe669814e5Eec33406Bd50ffa8331618D076aEc

The local SDK version used by this repository branch does not yet expose ChainId.ROBINHOOD, so this PR uses [4663 as ChainId] to keep the change scoped to the hook allowlist without introducing an unrelated SDK/lockfile update.

If maintainers prefer, this can be changed to [ChainId.ROBINHOOD] once the repository lockfile resolves to an SDK version that includes Robinhood Chain.

Test plan

• npm run build
• npm run test:unit

[graphite-app]

Graphite Automations

"Request reviewers once CI passes on routing-api repo" took an action on this PR • (08/21/26)

3 reviewers were added and 1 assignee was added to this PR based on Siyu Jiang (See-You John)'s automation.

[KFCcook-lab]

Hi please contact me about why this was closed without further action or notice
@KFCcook-lab
@kfcstrategy

[KFCcook-lab]

What is needed for this to pass?

• ChainId.ROBINHOOD SDK update instead of [4663 as ChainId] ?
  • security review / audit proof for CashCatHook ?
  • a specific integration request path ?

Thanks for any comments you can provide

[KFCcook-lab]

Hi Daniel can you tell us if anything could work for this merge request? - ChainId.ROBINHOOD SDK update instead of [4663 as ChainId]. ? - security review / audit proof for CashCatHook ? - a specific integration request path ? - sponsor/contact from Robinhood Chain / Uniswap Labs ? Can you provide any comments ? Thanks!

…

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