Replace free-text genre field with structured style dropdowns

The customer request form previously had an open 'Style / genre / mood'
text field, which produced inconsistent genre descriptions and confused
Suno. Replace it with three dropdowns:

- Decade / era (required) — loaded from /mnt/Storage/Decades.txt
- Basic style (required) — loaded from /mnt/Storage/Music Genres.txt
- Additional style (optional) — same genre list

The combined value is stored in the existing style_genre column as a
comma-separated string (e.g. '1980's, Pop, Funk'), so no schema change
is required. The admin request page exposes the same dropdowns for
corrections, and the copy-to-Hermes prompt formats the style as a clean
sentence like '1980's-era Pop with Funk influences'.

The canonical lists live in /mnt/Storage; bundled copies under lists/
act as a fallback when that mount is unavailable in the container.

Bumps version to 0.4.6 and updates README.

lists/music_genres.txt

@@ -0,0 +1,190 @@
+A Cappella
+Abstract
+Acid
+Acid Jazz
+Acid Punk
+Acoustic
+Afro-Punk
+Alternative
+Alternative Rock
+Ambient
+Anime
+Art Rock
+Avantgarde
+Ballad
+Baroque
+Bass
+Beat
+Bebop
+Bhangra
+Big Band
+Big Beat
+Black Metal
+Bluegrass
+Blues
+Booty Bass
+Breakbeat
+BritPop
+Cabaret
+Celtic
+Chamber Music
+Chanson
+Chillout
+Chorus
+Christian Gangsta Rap
+Christian Rap
+Christian Rock
+Classic Rock
+Classical
+Club
+Club-House
+Comedy
+Contemporary Christian
+Country
+Crossover
+Cult
+Dance
+Dance Hall
+Darkwave
+Death Metal
+Disco
+Downtempo
+Dream
+Drum & Bass
+Drum Solo
+Dub
+Dubstep
+Duet
+Easy Listening
+EBM
+Eclectic
+Electro
+Electroclash
+Electronic
+Emo
+Ethnic
+Euro-House
+Euro-Techno
+Eurodance
+Experimental
+Fast Fusion
+Folk
+Folk-Rock
+Folklore
+Freestyle
+Funk
+Fusion
+G-Funk
+Game
+Gangsta
+Garage
+Garage Rock
+Global
+Goa
+Gospel
+Gothic
+Gothic Rock
+Grunge
+Hard Rock
+Hardcore
+Heavy Metal
+Hip-Hop
+House
+Humour
+IDM
+Illbient
+Indie
+Indie Rock
+Industrial
+Industro-Goth
+Instrumental
+Instrumental Pop
+Instrumental Rock
+Jam Band
+Jazz
+Jazz & Funk
+JPop
+Jungle
+Krautrock
+Latin
+Leftfield
+Lo-Fi
+Lounge
+Math Rock
+Mariachi
+Meditative
+Merengue
+Metal
+Musical
+National Folk
+Native American
+Neoclassical
+Neue Deutsche Welle
+New Age
+New Romantic
+New Wave
+Noise
+Nu-Breakz
+Oldies
+Opera
+Podcast
+Polka
+Polsk Punk
+Pop
+Pop-Folk
+Pop/Funk
+Porn Groove
+Post-Punk
+Post-Rock
+Power Ballad
+Pranks
+Primus
+Progressive Rock
+Psybient
+Psychedelic
+Psychedelic Rock
+Psytrance
+Punk
+Punk Rock
+Rap
+Rave
+Reggae
+Retro
+Revival
+Rhythm and Blues
+Rhythmic Soul
+Rock
+Rock & Roll
+Salsa
+Samba
+Satire
+Shoegaze
+Showtunes
+Ska
+Slow Jam
+Slow Rock
+Sonata
+Soul
+Sound Clip
+Soundtrack
+Southern Rock
+Space
+Space Rock
+Speech
+Swing
+Symphonic Rock
+Symphony
+Synthpop
+Tango
+Techno
+Techno-Industrial
+Terror
+Thrash Metal
+Top 40
+Trailer
+Trance
+Tribal
+Trip-Hop
+Trop Rock
+Vocal
+World Music