Add Build 42 World Atmosphere Pack mod

SETUP.txt

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+Build 42 World Atmosphere Pack setup
+
+1. The 15 tracks from MusicOGGFolder are included as track1.ogg through
+   track15.ogg under:
+   Contents/mods/WorldAtmospherePack/42/media/sound/WorldAtmospherePack/
+   Do not publish music unless you have permission to redistribute it on
+   Steam Workshop, even if the Workshop item is friends-only.
+
+2. To add more songs, duplicate a clip { ... } block in
+   Contents/mods/WorldAtmospherePack/42/media/scripts/WorldAtmosphereSounds.txt,
+   changing its file path to each new .ogg. The game randomly selects a clip.
+   All songs should be normalized to a similar loudness. Keep paths and casing exact.
+
+3. Change MIN_WAIT_MINUTES and MAX_WAIT_MINUTES near the top of
+   Contents/mods/WorldAtmospherePack/42/media/lua/client/WorldAtmospherePack.lua
+   to adjust the real-time gap after each song finishes. A currently playing
+   song is never interrupted by this mod. Each connected player has an
+   independent random schedule.
+
+4. The installed upload copy is at
+   %UserProfile%/Zomboid/Workshop/WorldAtmospherePack (not the game's Workshop
+   install directory). The Desktop source folder retains its old folder name;
+   its mod ID and all packaged content use WorldAtmospherePack. Keep only ONE
+   installed copy enabled. Test the native
+   Options > Audio > Music slider at zero and while changing it mid-song on
+   your exact Build 42 version. The mod applies this slider to its playing
+   track through the UI emitter once per second. Native game music is muted
+   while a custom track plays and restored to the slider setting afterward.
+
+5. The 256x256 preview.png was resized from the image in your Pictures folder.
+   Only publish artwork if you have permission to redistribute it. Use the
+   game's main-menu Workshop > Create and update items uploader. Choose visibility
+   (the template starts friends-only) and note the numeric Workshop ID.
+   If you move the project out of this folder, work on just ONE copy.
+
+6. In the dedicated server's Zomboid/Server/<servername>.ini set:
+   WorkshopItems=<numeric Workshop ID>
+   Mods=WorldAtmospherePack
+   Append with semicolons if other mods are configured, then restart the server.
+   Clients joining the server will be prompted to download Workshop content.
+
+References:
+https://pzwiki.net/wiki/Mod_structure
+https://pzwiki.net/wiki/Uploading_mods
+https://pz-wiki-modding.github.io/PZ-API-Docs/scripts/sound.html