fix: pin full dependency stack; drop vocab demo (unpublishable)

fix: remove background model preload (degraded perf on cpu-basic)

perf: shared cached model + background preload at home page

feat: drop similarity/morphology/paradigm demos, add vocab demo to home

chore: add macron_morph to home page, bump model version in parsing demo

Add latincy-lexicon demos: lexicon lookup and paradigm generator

Add Greek diacritics restorer demo page

Add parsing About tab to demos

Add U/V normalizer demo (page 8) and latincy-uv dependency

Add 4 new dashboard demos: NER, dependency trees, word similarity, morphology

Add senter demo

Update app

Fix typo

Update dashboard

Update app