fix push-to-action: use CLI direct invocation for token acquisition

the inline `node -e` + `TOKEN=$(...)` approach broke because
`core.getIDToken()` in @actions/core writes `::debug::` and
`::add-mask::` to stdout, polluting the captured value.

`node cli.ts gha token` uses `core.setOutput()` which writes to
the $GITHUB_OUTPUT file instead of stdout.

Made-with: Cursor

post.ts

@@ -1,19 +1,8 @@
 #!/usr/bin/env node
 
-/**
- * Post cleanup entry point for pullfrog/pullfrog action.
- * Runs independently after workflow failure or cancellation.
- * Searches for Pullfrog comment via GitHub API and updates if stuck on "Leaping into action".
- */
+import { runPullfrogCli } from "./runCli.ts";
 
-import { log } from "./utils/cli.ts";
-import { runPostCleanup } from "./utils/postCleanup.ts";
-
-log.debug(`[post] script started at ${new Date().toISOString()}`);
-try {
-  await runPostCleanup();
-} catch (error) {
-  const message = error instanceof Error ? error.message : String(error);
-  log.error(`[post] unexpected error: ${message}`);
-  // don't fail the post script - best effort cleanup
-}
+runPullfrogCli({
+  cliArgs: ["gha", "--post"],
+  swallowErrors: true,
+});