- log_manager: add collect_container_logs (appends docker logs to container_<name>.log),
get_container_log_lines, rotate_container_log, get_all_log_file_infos
- app.py: new endpoints /api/logs/files (all log file sizes), /api/logs/containers/<name>
(collect+return stored container logs); rotate endpoint now handles both service and container logs
- Logs page: split into API Service Logs tab (python manager logs) and Container Logs tab
(persistent docker stdout/stderr); Statistics tab shows both kinds with per-row rotate;
each tab has a description explaining what it shows and where files live
- wireguard_manager: test_connectivity peer_ip=None guard (already in previous commit, now rebuilt)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>