Start emacs server with session instead of socket

Add zip and unzip programs for emacs archive management

home/emacs/default.nix

@@ -10,6 +10,8 @@
     cmake
     fd
     graphviz
+    zip
+    unzip
 
     # Language-specific requirements
     ispell

home/emacs/server.nix

@@ -6,7 +6,7 @@
     enable = true;
     package = config.programs.emacs.package;
     defaultEditor = true;
+    startWithUserSession = true;
     client.enable = true;
-    socketActivation.enable = true;
   };
 }