refactor(cli): separate json payload output from logging

src/cli/update-cli/progress.ts

@@ -138,7 +138,7 @@ type PrintResultOptions = UpdateCommandOptions & {
 
 export function printResult(result: UpdateRunResult, opts: PrintResultOptions): void {
   if (opts.json) {
-    defaultRuntime.log(JSON.stringify(result, null, 2));
+    defaultRuntime.writeJson(result);
     return;
   }
 

src/cli/update-cli/status.ts

@@ -70,22 +70,16 @@ export async function updateStatusCommand(opts: UpdateStatusOptions): Promise<vo
   const updateLine = formatUpdateOneLiner(update).replace(/^Update:\s*/i, "");
 
   if (opts.json) {
-    defaultRuntime.log(
-      JSON.stringify(
-        {
-          update,
-          channel: {
-            value: channelInfo.channel,
-            source: channelInfo.source,
-            label: channelLabel,
-            config: configChannel,
-          },
-          availability: updateAvailability,
-        },
-        null,
-        2,
-      ),
-    );
+    defaultRuntime.writeJson({
+      update,
+      channel: {
+        value: channelInfo.channel,
+        source: channelInfo.source,
+        label: channelLabel,
+        config: configChannel,
+      },
+      availability: updateAvailability,
+    });
     return;
   }
 

src/cli/update-cli/update-command.ts

@@ -178,7 +178,7 @@ type UpdateDryRunPreview = {
 
 function printDryRunPreview(preview: UpdateDryRunPreview, jsonMode: boolean): void {
   if (jsonMode) {
-    defaultRuntime.log(JSON.stringify(preview, null, 2));
+    defaultRuntime.writeJson(preview);
     return;
   }