Switch Immich container to PostgreSQL 16

hosts/h001/containers/immich.nix

@@ -32,7 +32,7 @@ let
     {
       host = "${hostVarLibDir}/postgres";
       # Adjust based on container postgres data dir
-      container = "/var/lib/postgresql/17";
+      container = "/var/lib/postgresql/16";
       user = "postgres";
       uid = config.ids.uids.postgres;
       gid = config.ids.gids.postgres;
@@ -149,7 +149,8 @@ in
           ...
         }:
         {
-          config = {
+          config = lib.mkMerge [
+            {
               system.stateVersion = "25.05";
 
               networking = {
@@ -170,7 +171,7 @@ in
 
               services.postgresql = {
                 enable = true;
-              package = pkgs.postgresql_17.withPackages (ps: [ ps.pgvecto-rs ]);
+                package = pkgs.postgresql_16.withPackages (ps: [ ps.pgvecto-rs ]);
                 enableJIT = true;
                 authentication = ''
                   local all all trust
@@ -220,10 +221,12 @@ in
                 requires = [ "postgresql.service" ];
                 after = [ "postgresql.service" ];
               };
-
-            # Allow Immich user to access the media directory
+            }
+            {
+              # Allow Immich user to access the media directory for hardware transcoding
               users.users.immich.extraGroups = [ "video" "render" ];
-          };
+            }
+          ];
         };
     };
   };