feat: change detection — track network changes between scans (#79) - #86
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- ScanEvent model: device_appeared/disappeared, port_opened/closed, risk_appeared/resolved
- scan_runner: detect and persist change events after each scan
- new devices, disappeared IPs, port diffs per device, risk before/after diffs
- API: GET /changes, GET /changes/summary, PATCH /changes/{id}/reviewed, PATCH /changes/reviewed/all
- Changes page: timeline grouped by scan, dismiss per-event or all
- Nav: 'Changes' link with live unreviewed count badge (polls every 30s)
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Summary
Closes #79
Transforms NetworkCrawler from a point-in-time scanner into a continuous monitoring tool by tracking what changes between scans.
Changes detected
device_appeareddevice_disappearedport_openedport_closedrisk_appearedrisk_resolvedBackend
models/scan_event.py: NewScanEventORM model (scan_eventstable)scan_runner.py:_persist_resultreturns_PersistSummarywith new devices, disappeared IPs, port diffs;_record_scan_events()writes events after each scanapi/__init__.py:GET /changes,GET /changes/summary,PATCH /changes/{id}/reviewed,PATCH /changes/reviewed/allFrontend
ChangesPage: timeline of events grouped by scan with per-event and bulk dismissuseChanges+useChangesSummaryhooksChangeswith live unreviewed count badge (polls every 30 s)