feat: dev fix mkcert and ddev reachability

hosts/dev/modules/dev-tools.nix

@@ -1,7 +1,7 @@
 { pkgs, ... }:
 {
   nixpkgs.overlays = [
-    (import ../../utils/overlays/packages.nix)
+    (import ../utils/overlays/packages.nix)
   ];
 
   environment.systemPackages = with pkgs; [
@@ -10,6 +10,8 @@
     docker-compose
     git
     git-lfs
+    mkcert
+    screen
 
     # PHP
     php
@@ -27,9 +29,24 @@
     wget
     curl
     htop
-    tmux
   ];
 
+  # Persistent SSH sessions with tmux
+  programs.tmux = {
+    enable = true;
+    clock24 = true;
+    historyLimit = 50000;
+    terminal = "screen-256color";
+    extraConfig = ''
+      # Enable mouse support
+      set -g mouse on
+
+      # Start windows and panes at 1, not 0
+      set -g base-index 1
+      setw -g pane-base-index 1
+    '';
+  };
+
   # Docker for ddev
   virtualisation.docker.enable = true;
   users.users.dominik.extraGroups = [ "docker" ];