fix(dotfiles): symlink desktop entries individually

Use mode=symlink-each for ~/.local/share/applications so only the
custom .desktop files are linked instead of replacing the whole dir,
which hid system-installed entries.

mise.toml

@@ -63,7 +63,7 @@ dotfiles.default_mode = "symlink-each"
 "~/.local/share/fonts/" = { source = "fonts", mode = "copy" }
 
 # Desktop files
-"~/.local/share/applications" = "desktop"
+"~/.local/share/applications" = { source = "desktop", mode = "symlink-each" }
 
 # scripts.
 "~/.local/bin/hyprland-activeworkspace" = { source = "script/hyprland-activeworkspace", mode = "symlink" }