Prepare cPanel/Passenger deployment to caautomator.com

Same shared hosting account (kreesa on kush.mysecurecloudserver.com) already
running billing.kreesa.com and the kreesa.com demand platform. The account
has an open host-side blocker (no httpd vhost at all, needs Nest Nepal to
run /scripts/rebuildhttpdconf) that blocks every site on it, including this
one — nothing here is testable end to end until that clears, so this is
preparation, not execution.

- docs/cpanel-deployment.md: the full procedure (DNS, cPanel domain +
  Setup Python App, shipping the code, dependencies, environment variables,
  MySQL database creation, migrating the real local production data over,
  cron, verification) — written alongside the account's existing Laravel
  playbook, adapted for this app's very different stack (Python stdlib WSGI,
  no build step, no composer/artisan).
- deploy/passenger_wsgi.py.sample: the Passenger entry-point shim
  (server/app.py already exposes the plain WSGI `application` callable this
  needs, per README's existing "Ready to host" section).
- Decision made with the user: migrate the real local MySQL data to the new
  host rather than a fresh install; the Mac stops being the copy of record
  once that migration completes.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
