README: BibTeX authors as First Last (no commas)

README: switch back to arXiv link

README: drop muse-dereverb-ft reference; standalone wording

README: PDF link only (drop arXiv); fix backtick corruption

README: drop arXiv references; PDF only

README: add author-hosted PDF link

README: add arXiv link + citation

Update README: real FT checkpoint, link to training repo

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