Add Hyprlock and refactor Hyprland bindings

- Add hyprlock module and package plus hyprlock.conf XDG config
- Rework bindings: introduce mkMenu, gui/term helpers and grouped
  menus (apps, dev, gaming, utility, system) and wire them into the
  main popup; change session lock to hyprlock
- Simplify gaming-apps.nix: use pkgs, reorder packages and add
  wineWow64Packages.staging, steam-run and appimage-run

home/system/hyprland/hyprlock.nix

@@ -0,0 +1,58 @@
+{config, ...}: let
+  c = config.lib.stylix.colors;
+  fontSans = config.stylix.fonts.sansSerif.name;
+in {
+  xdg.configFile."hypr/hyprlock.conf".text = ''
+    general {
+      hide_cursor = true
+      grace = 0
+    }
+
+    background {
+      monitor =
+      color = rgba(${c."base00-rgb-r"}, ${c."base00-rgb-g"}, ${c."base00-rgb-b"}, 0.90)
+      blur_passes = 2
+      blur_size = 8
+      noise = 0.01
+    }
+
+    label {
+      monitor =
+      text = cmd[update:1000] date +"%A, %d %B %Y"
+      color = rgba(${c."base05-rgb-r"}, ${c."base05-rgb-g"}, ${c."base05-rgb-b"}, 1.0)
+      font_size = 30
+      font_family = "${fontSans}"
+      position = 0, 140
+      halign = center
+      valign = center
+    }
+
+    label {
+      monitor =
+      text = cmd[update:1000] date +"%H:%M"
+      color = rgba(${c."base0D-rgb-r"}, ${c."base0D-rgb-g"}, ${c."base0D-rgb-b"}, 1.0)
+      font_size = 54
+      font_family = "${fontSans}"
+      position = 0, 60
+      halign = center
+      valign = center
+    }
+
+    input-field {
+      monitor =
+      size = 320, 52
+      outline_thickness = 2
+      outer_color = rgba(${c."base03-rgb-r"}, ${c."base03-rgb-g"}, ${c."base03-rgb-b"}, 0.60)
+      inner_color = rgba(${c."base01-rgb-r"}, ${c."base01-rgb-g"}, ${c."base01-rgb-b"}, 0.92)
+      font_color = rgba(${c."base05-rgb-r"}, ${c."base05-rgb-g"}, ${c."base05-rgb-b"}, 1.0)
+      fail_color = rgba(${c."base08-rgb-r"}, ${c."base08-rgb-g"}, ${c."base08-rgb-b"}, 1.0)
+      check_color = rgba(${c."base0B-rgb-r"}, ${c."base0B-rgb-g"}, ${c."base0B-rgb-b"}, 1.0)
+      dots_spacing = 0.3
+      dots_center = true
+      hide_input = false
+      position = 0, -20
+      halign = center
+      valign = center
+    }
+  '';
+}