Yeganeh
No. Yeganeh is Persian in origin (یگانه) meaning 'unique' or 'matchless'; it is not derived from Arabic.
No. The term yegāneh is Persian and does not appear as a proper name in the Quran.
Yes. In modern Iran Yeganeh appears both as a feminine given name and as a family name in civil records and cultural registers.
While Yeganeh itself is a Persian adjective, Persian mystical poetry sometimes uses the root to describe unity or the matchless nature of the divine, giving the name a subtle Sufi-affiliated sensibility without being a technical Sufi title.
Approximate pronunciation in English is 'yeh-GAH-neh' (IPA: /jeˈgɒːne/), with the stress on the second syllable.