user-testing: test search quality

[aaronkaplan]

• [ ] plan a testing strategy
• [ ] test some approaches:
  • [ ] VS DB contains whole translated document
  • [ ] VS DB contains chunks (f.e.x \n, \<br>, \<p/> separated chunks of text)
  • [ ] VS DB is done via pgvector inside of repco
  • [ ] VS DB search is combined with regular keyword/substring search and ranked
• [ ] evaluate the tests and do stats on the quality
• [ ] decide which approach wins