Migrate dotfiles to Omarchy 4

Claude-Session: https://claude.ai/code/session_014ADhvRXuiTvrXSbConxUey

hypr/looknfeel.lua

@@ -0,0 +1,12 @@
+-- https://wiki.hypr.land/Configuring/Basics/Variables/#general
+hl.config({
+  general = {
+    gaps_in = 4,
+    gaps_out = 4,
+  },
+})
+
+-- Remove default window transparency. Turn it back on with `blob_glass on`,
+-- which drops a flag into ~/.local/state/omarchy/toggles/hypr/ that is loaded
+-- after this file.
+o.window({ tag = "default-opacity" }, { opacity = "1.0 override 1.0 override" })