Build the Panama Hyprland desktop

config/dot/uwsm/env-hyprland

@@ -0,0 +1,28 @@
+# ─────────────────────────────────────────────────────────────────────────────
+# uwsm environment — Hyprland-specific (HYPR* and AQ_*)
+#
+# uwsm sources this only for the Hyprland session, after ./env. Keeping the
+# compositor-specific variables separate means the general env file stays
+# reusable if another compositor is ever added.
+#
+# See ./env for why these live here instead of in hypr/env.lua.
+# ─────────────────────────────────────────────────────────────────────────────
+
+# ── GPU selection ────────────────────────────────────────────────────────────
+# Discrete RX 7800 XT first (it drives DP-2), integrated second so anything
+# plugged into its outputs still works.
+#
+# These are the colon-free stable symlinks created by the udev rule at
+# config/copy/etc/udev/rules.d/99-panama-gpu.rules -- /dev/dri/cardN numbering
+# is not stable across boots, and the /dev/dri/by-path/ names contain colons,
+# which AQ_DRM_DEVICES itself uses as a separator.
+#
+# Guarded, because pointing this at a device that does not exist stops Hyprland
+# from starting at all.
+if [ -e /dev/dri/amd-dgpu ]; then
+    if [ -e /dev/dri/amd-igpu ]; then
+        export AQ_DRM_DEVICES=/dev/dri/amd-dgpu:/dev/dri/amd-igpu
+    else
+        export AQ_DRM_DEVICES=/dev/dri/amd-dgpu
+    fi
+fi