[danielehrhardt]

The add-camera screen in the app can now connect an eufy account and import its cameras, like the server web UI already does.

What changed

• New "eufy account" entry under Integrations. Picking the Eufy brand also opens this flow, with a link to the manual RTSP form for wired models.
• Sign-in with email, password and region (default DE), then the email code step (2FA) and the captcha step (shows the captcha image, answer field). Polls while the server is still signing in.
• Connected view: account email, reload, the account's cameras with checkboxes (already-added ones are marked, battery level and weak WiFi shown), "Add n cameras", a result summary and sign-out.
• Notice that eufy battery cameras start with recording off and that motion recording only wakes the camera on eufy motion events.
• API helpers and types for /api/integrations/eufy*, eufy added to SourceKind, en and de strings.

The screen is already admin-only (route guard), same as the API.

Testing

• bun run typecheck and bun test src in app/ pass.
• No screenshots: the app has no working web target (expo-sqlite worker bundling fails) and a native simulator build was out of scope here. Not yet tried against a real eufy account on a device.