Remove deprecated `baseUrl` from docusaurus tsconfig before TypeScript 7

[bindsi]

Context

docs/docusaurus/tsconfig.json currently sets baseUrl: ".", which TypeScript has deprecated. To unblock CI, we added "ignoreDeprecations": "6.0" to silence the TS5101 error:

{
  "extends": "@docusaurus/tsconfig",
  "compilerOptions": {
    "baseUrl": ".",
    "ignoreDeprecations": "6.0"
  }
}

This is a temporary workaround. baseUrl will stop functioning in TypeScript 7.0.

Task

• Remove baseUrl from docs/docusaurus/tsconfig.json (and the ignoreDeprecations workaround).
• If any module resolution breaks, migrate to paths-based resolution instead.
• Verify npm run typecheck and the Docusaurus build still pass.

References

• TS migration info: https://aka.ms/ts6
• Original error: tsconfig.json(4,5): error TS5101: Option 'baseUrl' is deprecated and will stop functioning in TypeScript 7.0.