token and dep update

[dixitaniket]

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[Copilot]

Pull request overview

This PR updates the gateway’s x402/OG payment stack to a newer og-x402 prerelease, switches payment configuration from Base testnet to Base mainnet (network + token + default recipient), and updates the server route payment configuration accordingly.

Changes:

• Bump og-x402[evm] from 0.0.1.dev6 to >=0.0.1.dev9 and update uv.lock (including new nest-asyncio dependency).
• Migrate constants from Base testnet to Base mainnet (network ID, OPG token address, default payment recipient).
• Update x402 route configs to use mainnet + new token address and enable the ERC20 approval gas sponsoring extension.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
uv.lock	Locks new og-x402 version and adds nest-asyncio as a resolved dependency.
pyproject.toml	Loosens og-x402[evm] dependency to >=0.0.1.dev9.
tee_gateway/definitions.py	Updates network/token constants and default payment address to Base mainnet values.
tee_gateway/__main__.py	Registers x402 schemes for mainnet, updates route payment config, and adds gas sponsoring extension.
tests/test_pricing.py	Updates tests to reference the new mainnet OPG token constant.

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