Migrate Hyprland to Lua config, drop dead flake inputs, general cleanup

Hyprland
- Switch wayland.windowManager.hyprland to configType = "lua" (Hyprland 0.56)
- Convert settings, env, monitors, window rules, gesture, animations
  (hl.curve/hl.animation) and all keybinds to hl.* calls
- Add home/system/hyprland/lib.nix with exec/bind/execOnce helpers;
  every exec-once now runs from a hyprland.start hook
- Drop hard-coded default_monitor = "eDP-2"

Flake
- Remove blog, awesome-wallpapers and default-creds inputs (their repos
  no longer ship a flake.nix and broke `nix flake update`), along with
  the server modules and Glance links that used them
- Update flake.lock
- Replace removed `gcr` with `gcr_4`

Fixes
- Point configDirectory at /etc/nixos/nixy on home-pc and thinkpad
- Fix home-pc git email typo
- Remove conflicting openpgp signing format, make pull.rebase a boolean,
  replace hx/peco in git aliases with nvim/sk
- Fix zsh NUL alias (2>&1) and stop forcing bat colors in the cat alias
- Require a password for sudo again (nixos-rebuild stays NOPASSWD)
- Remove duplicate hardware.graphics block from home-pc flake
- Delete unused zen .old files, run alejandra on host files

hosts/home-pc/home.nix

@@ -15,19 +15,19 @@
     ../../home/programs/spotatui
     ../../home/programs/yazi
 
-		# ─────────────────────────────────────────────────────────────
+    # ─────────────────────────────────────────────────────────────
     # Gaming
     # ─────────────────────────────────────────────────────────────
-		../../home/programs/steam
+    ../../home/programs/steam
     ../../home/programs/star-citizen
 
-		# ─────────────────────────────────────────────────────────────
+    # ─────────────────────────────────────────────────────────────
     # Groups
     # ─────────────────────────────────────────────────────────────
     ../../home/programs/group/basic-apps.nix
     ../../home/programs/group/dev.nix
     ../../home/programs/group/misc.nix
-		../../home/programs/group/gaming-apps.nix
+    ../../home/programs/group/gaming-apps.nix
     ../../home/programs/group/music-apps.nix
 
     # ─────────────────────────────────────────────────────────────
@@ -46,7 +46,7 @@
   home = {
     inherit (config.var) username;
     homeDirectory = "/home/" + config.var.username;
-		file.".face" = {
+    file.".face" = {
       source = ./profile_picture.jpg;
     };
 
@@ -55,8 +55,18 @@
   };
 
   wayland.windowManager.hyprland.settings.monitor = [
-    "DP-3,1920x1080@144.0,1920x0,1.0"
-    "HDMI-A-1,1920x1080@60.0,0x0,1.0"
+    {
+      output = "DP-3";
+      mode = "1920x1080@144.0";
+      position = "1920x0";
+      scale = 1;
+    }
+    {
+      output = "HDMI-A-1";
+      mode = "1920x1080@60.0";
+      position = "0x0";
+      scale = 1;
+    }
   ];
 
   programs = {