bug(odin): identity path wrong

hosts/odin/age.nix

@@ -2,7 +2,7 @@
 {
   imports = [ inputs.agenix.nixosModules.default ];
 
-  age.identityPaths = [ "/persist/etc/ssh/id_ed25519_key" ];
+  age.identityPaths = [ "/persist/etc/ssh/ssh_host_ed25519_key" ];
   age.secrets = {
     "odin/nullmailer/remotes".file =
       inputs.secrets."odin/nullmailer/remotes";