## Summary

- Add per-host rsync bandwidth limit overrides with inherit/unlimited semantics.
- Store the effective bwlimit in run metadata/results and show it in host/run detail views.
- Document recommended starting values for VPN and remote backups.

## Tests
- `.venv/bin/python manage.py makemigrations --check --dry-run`
- `.venv/bin/python manage.py test src.pobsync_backend.tests.test_django_config_source.DjangoConfigSourceTests.test_returns_effective_config_from_database src.pobsync_backend.tests.test_django_config_source.DjangoConfigSourceTests.test_host_can_disable_global_rsync_bandwidth_limit src.pobsync_backend.tests.test_configure_commands.ConfigureCommandsTests.test_configure_host_uses_global_retention_defaults src.pobsync_backend.tests.test_run_scheduled_config_source.RunScheduledConfigSourceTests.test_dry_run_applies_configured_bandwidth_limit src.pobsync_backend.tests.test_run_scheduled_config_source.RunScheduledConfigSourceTests.test_real_run_can_request_verbose_output_args --verbosity 2`
- `.venv/bin/python manage.py test src.pobsync_backend.tests.test_views.ViewTests.test_create_host_config_form_creates_host src.pobsync_backend.tests.test_views.ViewTests.test_host_detail_renders_effective_config_preview src.pobsync_backend.tests.test_views.ViewTests.test_run_detail_renders_result_payload src.pobsync_backend.tests.test_views.ViewTests.test_host_config_form_updates_host_config --verbosity 2`
- `.venv/bin/python manage.py check`

Closes #51

README.md

@@ -154,6 +154,19 @@ The UI includes:
 - `/self-check/` for runtime checks
 - `/logs/` for filtered pobsync service logs
 
+## Bandwidth Limits
+
+Global config can set an rsync bandwidth limit in KB/s. The default `0` means unlimited. Each host can inherit the
+global value, set `0` to explicitly run unlimited, or set its own limit for slower remote links.
+
+For VPN-backed or remote backups, start conservatively and adjust after watching normal traffic:
+
+- `2500` KB/s is roughly 20 Mbit/s
+- `5000` KB/s is roughly 40 Mbit/s
+- `10000` KB/s is roughly 80 Mbit/s
+
+pobsync passes the effective value to rsync as `--bwlimit=<KB/s>` and shows it on the host detail and run detail pages.
+
 ## Restoring Data
 
 pobsync treats restores as an explicit manual operation. The control panel shows restore guidance on each snapshot