Add local time source, station buttons and link status

Prefer Home Assistant time with public NTP as fallback. Add next and previous
station, ESPHome and LibreTiny versions, and an MCU link sensor. Update notes
with the raw capture results and tidy the README to-do list.

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

server-example.yaml

@@ -7,6 +7,6 @@ substitutions:
 packages:
   lamp:
     url: https://mangavalk.com/mangavalk/esphome-wake-up-light-ii.git
-    ref: v1.0.0
+    ref: v1.0.1
     files: [wake-up-light-ii.yaml]
     refresh: 1d