ci(models): run metadata check on pull requests

.github/scripts/check-commandcode-model-metadata.ts

@@ -1,5 +1,5 @@
 import { execFile } from "node:child_process"
-import { appendFile, mkdtemp, readFile, rm } from "node:fs/promises"
+import { mkdtemp, readFile, rm } from "node:fs/promises"
 import { tmpdir } from "node:os"
 import { join, resolve } from "node:path"
 import { pathToFileURL } from "node:url"
@@ -302,9 +302,6 @@ async function main(): Promise<void> {
 
   console.log(report)
 
-  const summaryPath = process.env.GITHUB_STEP_SUMMARY
-  if (summaryPath) await appendFile(summaryPath, report, "utf-8")
-
   if (hasModelMetadataDiff(diff)) {
     throw new Error(
       `Static model metadata differs from command-code@${upstreamPackage.packageVersion}. Update src/models.ts and the snapshot version.`,