Add FixedBuilderScore contract and deployment script

[0xleal]

Replace PassportBuilderScore with a dummy contract that returns a fixed score for all users. Admin can update the score via setFixedScore(). Includes deployment script that also updates TalentVault to use the new contract.

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Note

Medium Risk
Impacts yield-rate inputs by enabling a single owner-updatable score source for all users, and includes a script that mutates mainnet TalentVault configuration; mistakes could change reward rates globally.

Overview
Adds FixedBuilderScore, a simple Ownable contract that returns a constant builder score for any passport ID and lets the owner update it via setFixedScore (emitting FixedScoreUpdated).

Introduces a mainnet/base-only Hardhat script (deployFixedBuilderScore.ts) that deploys FixedBuilderScore with an initial score (default 60) and immediately updates the mainnet TalentVault to use it via setPassportBuilderScore. Tests and shared artifacts are extended to cover FixedBuilderScore behavior and to validate TalentVault yield tiering (base vs bonus) when swapping in the fixed-score implementation; .tool-versions adds yarn.

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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Missing await on async ensureTimestamp calls

Medium Severity

The ensureTimestamp function returns a Promise and needs to be awaited. Without await, the EVM timestamp may not be set before the subsequent refresh() call executes, causing the test to calculate rewards over an incorrect time period. Other usages in TalentRewardClaim.ts and the ensureTimeIsAfterLockPeriod helper function correctly use await.

Additional Locations (1)

• test/contracts/talent/TalentVault.ts#L1038-L1039