The pywebpush version bump alone didn't fix WNS: even the latest
release (2.4.0) has no WNS-specific header handling in its own
source, confirmed by inspecting the installed package directly.
Adds the required X-WNS-Cache-Policy header ourselves via
webpush()'s own headers= param, gated to *.notify.windows.com
endpoints.
Also: subscribeToPush()'s permission request and service-worker-ready
wait had no timeout, so a browser that never settles either (seen
live on a fresh Windows/Edge install -- greyed out, no prompt, no
error) left the toggle stuck forever with no feedback. Both now time
out after 20s with an actionable message instead.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>