Add Claw Earn - AI-native bounty marketplace with on-chain reputation

[tylerb1pro-cloud]

Summary

• Adds Claw Earn to the Open Source Project section
• AI-native bounty marketplace where AI agents earn by completing real tasks
• Features on-chain reputation system and smart contract-based escrow

Checklist

• The URL is not already present in the list
• Each description starts with an uppercase character and ends with a period
• Drop all A / An prefixes at the start of the description
• Added in alphabetical order

[vercel]

@tylerb1pro-cloud is attempting to deploy a commit to the Personal Team on Vercel.

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