Address TS errors

Steps
remove;
typescript: {
ignoreBuildErrors: true,
},

from next.config.mjs

run:
npm run build

Various TS errors will show up - we need to go through and fix these

Start in next.config.mjs by removing the typescript.ignoreBuildErrors setting, then run npm run build to collect the TypeScript errors. Trace each reported location and fix the errors across the affected files; done means the build completes without ignoring TypeScript errors.

Written by the indexing model from the issue text.