[WIP] Fix error invoking useTheme from server

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Error: Attempted to call useTheme() from the server but useTheme is on the client. It's not possible to invoke a client function from the server, it can only be rendered as a Component or passed to props of a Client Component.
at (.next/server/chunks/ssr/72184a7e..js:1:13027)
at as (.next/server/chunks/ssr/72184a7e..js:1:55411)
at stringify () {
digest: '1815742220'
}

TypeError: g.useState is not a function or its return value is not iterable
at (.next/server/chunks/ssr/72184a7e..js:1:54835)
at ap (.next/server/chunks/ssr/72184a7e..js:1:54994)
at stringify () {
digest: '3691850334'
}

Creating an optimized production build ...
(node:111) [MODULE_TYPELESS_PACKAGE_JSON] Warning: Module type of file:///vercel/path0/postcss.config.js is not specified and it doesn't parse as CommonJS.
Reparsing as ES module because module syntax was detected. This incurs a performance overhead.
To eliminate this warning, add "type": "module" to /vercel/path0/package.json.
(Use node --trace-warnings ... to show where the warning was created)
✓ Compiled

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