feat(polygon): add pUSD (Polymarket USD)

[matallui]

Summary

Adds contract metadata and icon for pUSD (Polymarket USD) on Polygon.

Motivation

Polymarket is transitioning from USDC.e to pUSD as their collateral token. MetaMask Predict (our Polymarket integration) needs this token to be recognized in contract-metadata so it displays correctly in the wallet.

Changes

• Metadata: metadata/eip155:137/erc20:0xc011a7e12a19f7b1f670d46f03b03f3342e82dfb.json
• Icon: icons/eip155:137/erc20:0xc011a7e12a19f7b1f670d46f03b03f3342e82dfb.svg

Token Details

Field	Value
Name	Polymarket USD
Symbol	pUSD
Decimals	6
Chain	Polygon (eip155:137)
Contract	0xc011a7e12a19f7b1f670d46f03b03f3342e82dfb
Polygonscan	https://polygonscan.com/token/0xc011a7e12a19f7b1f670d46f03b03f3342e82dfb

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Note

Low Risk
Only adds static token metadata and an icon file; no executable code or security-sensitive logic is changed.

Overview
Adds new Polygon (eip155:137) contract metadata for pUSD (Polymarket USD) at 0xC011a7E12a19f7B1f670d46F03B03f3342E82DFB, including name/symbol/decimals and a logo reference.

Includes the corresponding SVG token icon at icons/eip155:137/erc20:0xC011a7E12a19f7B1f670d46F03B03f3342E82DFB.svg.

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