Undocumented apps: per-device filter and wider device column; presence for Skip USMT

- Source Devices in the undocumented-apps list filters by device name, like
  the software columns; Devices and the action column take less room.
- Drop the one-click documented pick (Documented + Only ticked does it).
- Stage legend underline spans label and number.
- Device details title stays on one line; the name truncates instead.
- Presence sweep also pings devices under Skip USMT tags.

web/overview.css

@@ -24,7 +24,8 @@
 .ov-tile.ov-selected { border: 2px solid #3498db !important; background: rgba(52,152,219,0.12); box-shadow: 0 0 0 3px rgba(52,152,219,0.25); transform: none; position: relative; }
 .ov-showing { display: inline-block; margin-top: 6px; font-size: 0.72em; font-weight: 700; color: #fff; background: #3498db; border-radius: 999px; padding: 2px 8px; }
 .ov-bar-row.ov-selected { background: rgba(52,152,219,0.16); box-shadow: inset 3px 0 0 #3498db; }
-.ov-legend-item.ov-selected { color: var(--text-main); text-decoration: underline; text-decoration-color: #3498db; text-decoration-thickness: 2px; text-underline-offset: 4px; }
+.ov-legend-item.ov-selected { color: var(--text-main); box-shadow: inset 0 -2px 0 #3498db; }
+.ov-legend-item.ov-selected .ov-key { box-shadow: none; }
 .ov-heat-cell.ov-selected, .ov-heat-sum.ov-selected { box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 5px #3498db !important; }
 .ov-heat-sum.ov-selected { background: rgba(52,152,219,0.16); }
 
@@ -160,3 +161,6 @@ table.ov-heat td { padding: 0; text-align: center; border: 0; background: none;
     .ov-bar-row { grid-template-columns: 128px 1fr 32px; }
     .ov-bar-label { font-size: 0.82em; }
 }
+
+/* Undocumented apps list: room goes to the device names */
+#ov-table td.ov-src-list { white-space: normal; overflow-wrap: anywhere; }