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>
2 replace all actions have been performed:
- "SPDX-License-Identifier: AGPL-3.0-only" to "SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial"
- "Please see LICENSE in the repository root for full details." to "Please see LICENSE files in the repository root for full details."
