Adds a centralized BackendReachability singleton fed by a Dio
interceptor (connection-level failures only) and connectivity_plus.
PolledValue subscribes to it and pauses on offline / reloads
immediately on reconnect, replacing the previous per-card error
cascade. MainShell renders a global OfflineBanner with Retry and
Settings actions; cards downgrade error→stale when offline so the
banner is the only red element.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Transient network hiccups and temporary backend errors (5xx, timeouts)
now retry transparently up to twice (1 s then 3 s backoff) before
surfacing an error to the user. Non-idempotent methods (POST, PUT,
DELETE), cancellations, and non-retryable status codes are excluded.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Swap PagingController/PagedSliverList for explicit page state and
Previous/Next icon buttons below the list
- Fetch pageSize+1 items to detect the last page without a total-count
API; pagination controls are hidden when there is only one page
- Remove unused infinite_scroll_pagination dependency
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Implements the /about route with app description, version info,
clickable links to the source repo and AGPL-3.0 license, and
third-party copyright notices. Adds url_launcher for cross-platform
link handling.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Displays a scatter chart timeline of when the device was seen online,
with a time range selector (Today → Last Year). Tooltips show event
date/time, type, and highlight any IP or vendor changes relative to
the current device data.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
