Trigger netclaw.dev rebuild on release publish

[Aaronontheweb]

Summary

Adds a tiny workflow that fires netclaw-dev/netclaw-website's deploy workflow whenever a release is published here. End result: /changelog on netclaw.dev stays in sync with this repo's releases automatically, no manual rebuild needed.

How it works

on:
  release:
    types: [published]   # automatic on every release
  workflow_dispatch:     # manual button for testing

Test plan

After merge:

1. Go to Actions → Trigger netclaw.dev rebuild → Run workflow on this repo.
2. Confirm the run logs Dispatched deploy.yml on netclaw-dev/netclaw-website@dev.
3. Check netclaw-dev/netclaw-website Actions tab — a fresh deploy run should appear within a few seconds, attributed to the PAT owner.
4. Once that deploy finishes (~2 min), /changelog reflects whatever release state this repo currently has.

The release: published path will be exercised naturally the next time a release ships.

Footprint

One file, 30 lines, no changes to anything else in the repo.