feat: default preview branch to develop

hosts/lab/sites.nix

@@ -16,7 +16,7 @@
 #   readWritePaths      — paths the server can write to at runtime (default: [])
 #   afterServices       — systemd units to wait for before building (default: ["forgejo.service"])
 #   preview.enable      — TinyAuth-protected preview of this site (default: false)
-#   preview.branch      — branch for preview (default: "preview")
+#   preview.branch      — branch for preview (default: "develop")
 #   preview.domain      — preview domain (default: 0<name>.ily.rs)
 #   preview.port        — preview server port (required when static = false)
 #

modules/site.nix

@@ -91,7 +91,7 @@ let
 
         branch = mkOption {
           type = types.str;
-          default = "preview";
+          default = "develop";
         };
 
         domain = mkOption {