fix(install): bake dconf, seed main, name ISO, display modes (#123–#126)

Batch of existing-bug fixes from Acer/XPS install findings:

- #123: HM pre-activate creates /run/user/$UID and prefers
  dbus-run-session so dconf no longer aborts the desktop bake
- #124: main-built ISOs seed ?ref=main; patch-template rewrites
  inputs.nomarchy.url from NOMARCHY_FLAKE_URL (was set but unused)
- #125: image.baseName → nomarchy-live-….iso (not nixos-live-…)
- #126: Display mode list sorted by pixel area; toast shows hyprctl
  size; TESTING notes QEMU fixed-window scaling illusion

Verified: V0 flake check, installer-safety, baseName eval, patch-template
flakeUrl rewrite, mode-sort fixture.

modules/home/rofi.nix

@@ -643,26 +643,38 @@ ${themeRows}
         fi
         [ -n "$name" ] || exit 0
 
-        # Pick a mode: a few Hyprland resolution tokens, then the output's
-        # advertised modes (rounded refresh rate, deduped, highest first). The
-        # prompt shows the current mode.
+        # Pick a mode: Hyprland tokens, then advertised modes sorted by
+        # pixel area (highest first). Do NOT use sort -rV on "WxH@R" —
+        # version sort is not geometric and mis-orders common modes (#126).
         cur=$(printf '%s' "$mons" | jq -r --arg n "$name" \
           '.[]|select(.name==$n)|"\(.width)x\(.height)@\(.refreshRate|round)"')
         mode=$( {
           printf 'preferred\nhighres\nhighrr\n'
           printf '%s' "$mons" | jq -r --arg n "$name" '.[]|select(.name==$n)|.availableModes[]' \
-            | sed 's/Hz$//' | awk -F@ '{ printf "%s@%d\n", $1, $2 + 0.5 }' | sort -rV -u
+            | sed 's/Hz$//' \
+            | awk -F'[@x]' '
+                NF >= 2 {
+                  w=$1+0; h=$2+0; r=($3==""?0:$3+0);
+                  printf "%d\t%dx%d@%d\n", w*h, w, h, r
+                }' \
+            | sort -t$'\t' -k1,1nr -k2,2 \
+            | cut -f2- \
+            | awk 'NF && !seen[$0]++'
           printf '%s\n' "$BACK"
         } | rofi_menu -p "$name (now $cur)" ) || exit 0
         [ "$mode" = "$BACK" ] && exec "$0" "$modeBack"
         [ -n "$mode" ] || exit 0
 
         # Apply live (keep the output's current position + scale), then persist.
+        # Notify with hyprctl-reported size so a QEMU fixed window that
+        # *looks* smaller at higher modes is not mistaken for an invert (#126).
         pos=$(printf '%s' "$mons" | jq -r --arg n "$name" '.[]|select(.name==$n)|"\(.x)x\(.y)"')
         scale=$(printf '%s' "$mons" | jq -r --arg n "$name" '.[]|select(.name==$n)|.scale')
         if hyprctl keyword monitor "$name,$mode,$pos,$scale" >/dev/null 2>&1; then
           nomarchy-theme-sync --quiet set "settings.monitors.$name" "$mode" --no-switch
-          notify-send "Display" "$name → $mode"
+          got=$(hyprctl monitors -j | jq -r --arg n "$name" \
+            '.[]|select(.name==$n)|"\(.width)x\(.height)@\(.refreshRate|round)"')
+          notify-send "Display" "$name → $mode (now ${got:-?})"
         else
           notify-send "Display" "Could not set $name to $mode."
         fi ;;