…11571)

`pnpm` could hang for the lifetime of the worker pool after a command logically finished whenever the code path returned through `main` without `process.exit(...)`.

`main.ts` only ran `finishWorkers()` inside the command-handler `finally` block. Short-circuit returns that came earlier — `--version`, `--help`, fatal config errors that surface before a command runs — bypassed it and left the integrity-resolution worker pool active.

The CLI entry (`pnpm/src/pnpm.ts`) now runs `finishWorkers()` in its own `finally`, so every exit path tears down the pool. Cleanup rejections are swallowed so the `finally` never masks the real command result.

## Reproducer

```bash
echo '{"devEngines":{"packageManager":{"name":"pnpm","version":"11.0.9","onFail":"download"}}}' > package.json
time pnpm --version
# before (Linux): prints 11.0.9, then hangs for the worker-pool lifetime
# after:          prints 11.0.9, exits in ~1-3 s
```

`switchCliVersion` resolves the integrity (spawning workers), finds nothing to swap (range/version already matches running pnpm), and returns through main's `--version` short-circuit. The unterminated workers used to keep the event loop alive.

Surfaced in pnpm/action-setup#254 — bumping the action's bootstrap to 11.0.9 made every CI job using `devEngines.packageManager` with `onFail: "download"` hang.

Bumps [pnpm/action-setup](https://github.com/pnpm/action-setup) from 5.0.0 to 6.1.0.

## Release notes

Sourced from pnpm/action-setup's releases.

### v6.1.0

### What's Changed
- feat: support pnpm v12 by `@zkochan` in pnpm/action-setup#288

Full Changelog: pnpm/action-setup@v6.0.10...v6.1.0

### v6.0.10

### What's Changed
- docs(README): point users to the successor pnpm/setup action by `@BlackHole1` in pnpm/action-setup#282
- refactor: introduce restore keys for cache by `@SukkaW` in pnpm/action-setup#280
- ci: use pnpm 11 for `pr-check` by `@jamietanna` in pnpm/action-setup#284
- fix: update pnpm to v11.19.0 by `@jamietanna` in pnpm/action-setup#283
- docs: update README to include devEngines.packageManager by `@nemchik` in pnpm/action-setup#273

### New Contributors
- `@jamietanna` made their first contribution in pnpm/action-setup#284
- `@nemchik` made their first contribution in pnpm/action-setup#273

Full Changelog: pnpm/action-setup@v6...v6.0.10

### v6.0.9

### What's Changed
- fix: update pnpm to v11.7.0 by `@zkochan` in pnpm/action-setup#267

Full Changelog: pnpm/action-setup@v6...v6.0.9

### v6.0.8

### What's Changed
- docs(README): fix `cache_dependency_path` type by `@haines` in pnpm/action-setup#257
- fix: drop patchPnpmEnv so standalone+self-update works on Windows by `@zkochan` in pnpm/action-setup#258
- fix: update pnpm to 11.1.1 by `@mungodewar` in pnpm/action-setup#248

### New Contributors
- `@mungodewar` made their first contribution in pnpm/action-setup#248

Full Changelog: pnpm/action-setup@v6.0.7...v6.0.8

### v6.0.7

### What's Changed
- fix: honor devEngines.packageManager.onFail=error (#252) by `@zkochan` in pnpm/action-setup#254
- fix: restore inputs from state in post by `@haines` in pnpm/action-setup#255
- fix: self-update bootstrap to packageManager-pinned version (#233) by `@zkochan` in pnpm/action-setup#256

### New Contributors
- `@haines` made their first contribution in pnpm/action-setup#255

Full Changelog: pnpm/action-setup@v6.0.6...v6.0.7

... (truncated)

## Commits
- `ea17c68` feat: support pnpm v12 (#288)
- `0977fd9` docs: Update README to include devEngines.packageManager (#273)
- `48261ac` fix: update pnpm to v11.19.0 (#283)
- `75677f7` ci: use pnpm 11 for `pr-check` (#284)
- `769ae71` refactor: introduce restore keys for cache (#280)
- `6fed91f` docs(README): point users to the successor pnpm/setup action (#282)
- `0ebf471` fix: update pnpm to v11.7.0 (#267)
- `0e279bb` fix: update pnpm to 11.1.1 (#248)
- `3e83581` fix: drop patchPnpmEnv so standalone+self-update works on Windows (#258)
- `551b42e` docs(README): fix `cache_dependency_path` type (#257)
- Additional commits viewable in compare view