feat: improve SSH configuration and cleanup unused keys

- Commented out default SSH service enablement in common suite.
- Updated SSH agent configuration to use dynamic user paths.
- Removed outdated SSH keys and added missing key descriptions.

modules/darwin/suites/common/default.nix

@@ -32,7 +32,7 @@ in
 
       security = {
         gpg = enabled;
-        ssh = enabled;
+        #ssh = enabled;
       };
     };
   };