Show a one-time bottom sheet on the home screen to announce that several
accounts can now be added (element-hq/element-meta#3349).
- Add `Announcement.MultiAccount`, which is never shown by default.
- AppMigration11 queues the announcement on application upgrade only,
and marks it as shown if the user already has several accounts.
- HomePresenter shows the bottom sheet only when the announcement is
pending, the MultiAccount feature flag is enabled and the user has a
single account.
- The "Add account" button hides the sheet, marks the announcement as
dismissed and starts the add account flow through the new
`HomeEntryPoint.Callback.navigateToAddAccount()`.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Cover the last remaining interfaces across features/announcement, cachecleaner,
call, contentscanner, createroom, knockrequests, lockscreen, rolesandpermissions,
startchat, userprofile and viewfolder, with their members and parameters.
Grouped into one commit rather than eleven near-empty ones, per the AGENTS.md rule
about tiny commits.
This completes every features/* api module.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Benoit Marty