Closes the Web Push gap left by #82: in-page Notification API and tab
title flash both showed `codeman:<host>` after that PR, but OS-level
notifications dispatched via the service worker — the surface that
matters most when the tab is closed and the user is reading their
system notification center across multiple Codeman instances —
still hardcoded the literal "Codeman" prefix.
Service workers run in an isolated context with no access to
document.title or any in-page state, so the hostname has to ride
along in the push payload itself.
Server (server.ts:sendPushNotifications): emit `hostTitle: this.windowTitle`
in the JSON payload alongside the existing `title` (event-specific text
like "Permission Required"). The two stay separate so the SW can compose
them — the server knows the host, the SW knows the OS context.
Service worker (sw.js): compose `${hostTitle}: ${title}` when both
present, mirroring the in-page Notification format from
notification-manager.js. Fall back to `title || hostTitle || 'Codeman'`
so older servers (which omit hostTitle) keep working — the field is
purely additive on the wire.
Tests (test/push-payload-host-title.test.ts): mock the `web-push` module
via vi.hoisted(), instantiate WebServer without binding a port, stub
the push store with one fake subscription, and verify the JSON payload
shipped to webpush.sendNotification carries the right hostTitle for
both --title-hostname overrides and the os.hostname() default. Also
mirrors the SW's title-composition logic in a small helper so any
future change to the format breaks the test instead of being caught
only by users running multiple Codeman instances.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
