docs: update timeline to reflect immediate restart after each backup

docs: update recovery timeline with multi-backup rollback

feat: loop through ALL backups in order, report all tried backups on failure

docs: add backup file path info to notification step

docs: add clear purpose and recovery timeline at the beginning

docs: merge status and logs sections

docs: add log viewing and test notification commands

docs: add clear service management commands for all platforms

fix: default ROLLBACK_THRESHOLD to 1 in init

fix: export name notifyFeishu to match import

fix: use explicit anchor names

fix: use anchor links for bilingual

feat: add bilingual toggle and Feishu support to README

feat: add feishu notifier support

fix: move backup paths into prompt section