Fix Robinhood v4 address prediction and vanity for 0x4b07 suffix

[Quazia]

Summary

• Point clanker_v4_robinhood at the BSC v4.1 ClankerToken creation bytecode so CREATE2 prediction matches on-chain Robinhood deploys.
• Fixes the incident mismatch where SDK predicted 0x75b45af4... but the actual token was 0x085844F1....
• Ensures vanity search (init_code_hash) and predictTokenAddressV4 stay in sync for Robinhood 0x4b07 suffix addresses.

Test plan

• predictTokenAddressV4 matches Robinhood incident deploy tx fixture (0xab51d3e1... → 0x085844F1...)
• Live vanity service returns ...4b07 and prediction matches returned address
• Base config still uses generic v4 bytecode (regression guard)
• Merge and publish 4.2.18 to npm

Made with Cursor

[Copilot]

Pull request overview

This PR aligns Robinhood v4 CREATE2 token address prediction (and the vanity init_code_hash flow) with on-chain deployments by updating the Robinhood clanker_v4 token creation bytecode to the BSC v4.1 ClankerToken bytecode, and adds regression/fixture tests to prevent future drift.

Changes:

• Update clanker_v4_robinhood token bytecode to ClankerToken_v4_bsc_bytecode so CREATE2 predictions match Robinhood deploys.
• Add on-chain fixture coverage for predictTokenAddressV4 (Robinhood incident tx) plus a Base regression guard.
• Add a Robinhood vanity config test, and bump version/changelog for release.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
test/tokens/v4/predictTokenAddressFixtures.test.ts	Adds fixture-based tests to validate CREATE2 prediction against Robinhood incident deploy and ensure Base remains on generic v4 bytecode.
test/tokens/v4/clankerV4Token.config.test.ts	Adds a Robinhood vanity-path test to validate converter behavior when vanity: true.
src/utils/clankers.ts	Switches Robinhood v4 token creation bytecode to the BSC v4.1 bytecode to keep prediction/vanity in sync with chain reality.
package.json	Bumps package version to 4.2.18 for release.
CHANGELOG.md	Documents the Robinhood v4 CREATE2 prediction fix in 4.2.18.

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