22,056 is not about 30,000. Per scc:

  Language      Files     Lines   Blanks  Comments     Code
  ─────────────────────────────────────────────────────────
  TypeScript      760    109110    14500      7397    87213
  JSON             41     22056        6         0    22050
  Markdown         56      7150     2086         0     5064
  YAML             33      3965      406       208     3351
  ... and many more with fewer than 1k lines

Regarding "loads of assumptions," it's hard to tell how much of this is vibecoded slop (definitely non-zero looking at the commit log), but I don't think it's that outrageous to claim 87k sloc is too much for a textbox and an API wrapper.