Adds ⓘ tooltip icons with contextual help text to technical fields: - remotes.cgi: SSH key, S3 endpoint, GDrive service account/folder ID, base dir, bandwidth limit, rsync options, retention count - settings.cgi: working dir, log retention, include/exclude accounts, lock file, SSH timeout/retries, rsync options - restore.cgi: restore mode, restore strategy Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>