Rename InfoFlow to Daynivo: texts and boot splash logo

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

src/voxip_kiosk/agent.py

@@ -214,7 +214,7 @@ class Agent:
             return
 
         # Without any network the page cannot recover by itself: say so on screen. When only
-        # the server is unreachable the page stays, so InfoFlow can show its offline cache.
+        # the server is unreachable the page stays, so Daynivo can show its offline cache.
         if not self.has_network():
             self.state.update(target_reachable=False, reason=NO_NETWORK, checked_at=int(self.wall()))
             self._probe = None