Upgrade wallet UI

[fulldecent]

Currently we use

    const { Web3modal, WagmiCore, Chains } = await import(
      "https://cdn.jsdelivr.net/npm/@web3modal/cdn@5.1.11/dist/wagmi.js"
    );

but the package is deprecated: source https://www.npmjs.com/package/web3modal

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Their upgrade path is documented at https://grok.com/share/bGVnYWN5_8af98068-6b7a-4db5-bda8-97da69f85621

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We much prefer to use CDN version, rather than adding an entire build system (yarn/npm, Vite, webpack). ESPECIALLY because TenThousandSu.com is specifically designed to be a studyable/copy-pastable example for others to use.

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Stronger than than, we require:

• Supports Trezor wallet
• Supports AirGap wallet