Phase 6: glance widget with cached address

App type changed to widget for glance support. GlanceView shows
event type, date/time, and street+housenumber (or coordinates as
fallback). Addresses are cached in Event storage on first view in
history. Glance-required modules annotated with (:glance). Address
distance threshold raised to 70m.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

source/Event.mc

@@ -2,12 +2,14 @@ import Toybox.Lang;
 
 // Value object for a protocol entry. Serialized as a plain Dictionary
 // so Application.Storage can persist it.
+(:glance)
 class Event {
     public var type as String;
     public var timestamp as Number;   // unix seconds
     public var lat as Float or Null;
     public var lon as Float or Null;
     public var accuracy as Float or Null;
+    public var address as String or Null;
 
     function initialize(type as String, timestamp as Number,
                         lat as Float or Null, lon as Float or Null,
@@ -17,25 +19,34 @@ class Event {
         self.lat = lat;
         self.lon = lon;
         self.accuracy = accuracy;
+        self.address = null;
     }
 
     function toDict() as Dictionary {
-        return {
+        var d = {
             "t"   => type,
             "ts"  => timestamp,
             "lat" => lat,
             "lon" => lon,
             "acc" => accuracy
         };
+        if (address != null) {
+            d["addr"] = address;
+        }
+        return d;
     }
 
     static function fromDict(d as Dictionary) as Event {
-        return new Event(
+        var evt = new Event(
             d["t"] as String,
             d["ts"] as Number,
             d["lat"] as Float or Null,
             d["lon"] as Float or Null,
             d["acc"] as Float or Null
         );
+        if (d.hasKey("addr")) {
+            evt.address = d["addr"] as String or Null;
+        }
+        return evt;
     }
 }