Backup verified column

plugins/backups/plugin.py

@@ -101,6 +101,12 @@ class BackupsPlugin(BasePlugin):
                     'title': 'label',
                     'meta': [
                         {'key': 'collectedat', 'label': 'Captured', 'format': 'date'},
+                        # Captured is when this config was WRITTEN; verified is
+                        # when a PC last posted it and the hash still matched.
+                        # An unchanged config writes no revision, so without
+                        # this a machine checked daily for a year shows one
+                        # entry from last spring and reads as abandoned.
+                        {'key': 'lastseenat', 'label': 'Verified', 'format': 'date'},
                         {'key': 'sourcehostname', 'label': 'From'},
                         {'key': 'shorthash', 'label': 'Hash', 'mono': True},
                     ],