NET blip flashes, clears itself after 5 minutes, hold NET clears it; Restart page is now page 20

- The remembered network blip is a flashing amber warning (new "notice"
  level, not counted as DOWN): press NET to stop the flashing, hold NET 2 s
  to clear it, otherwise it goes by itself after 5 minutes (was 3, solid).
- The user moved the Restart page to page 20: config, the RESTART PAGE key
  on page 19 and both pages re-pushed. A scan of all pages finds no other
  button pointing at the old page.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

make_page.py

@@ -166,8 +166,10 @@ def button(tid, tile, cfg):
         press = "ack " + tid
         fixable = "members" in tile or any((c["type"] in RESTARTABLE and c.get("conn")) or c.get("fix")
                                             for c in tile.get("checks", []))
-        hold = ("restart " + tid) if fixable or tile.get("hold_always") else None
-        if tile.get("hold_always"):
+        hold = ("restart " + tid) if fixable or tile.get("hold_always") or kind == "network" else None
+        if kind == "network":
+            note = "Press: stop the flashing. Hold 2 s: clear a network blip (it also clears itself after 5 minutes)."
+        elif tile.get("hold_always"):
             note = "Press: acknowledge. Hold 2 s: %s." % cfg["fixes"][tile["hold_always"]]["label"]
         else:
             note = "Press: acknowledge." + (" Hold 2 s: fix what this button is failing on (nothing if it is green)."