Phase 3: event creation flow (GPS + success / error)

GpsService runs a single-shot position request with a hard timeout
and early-exit when Config.GPS_TARGET_ACCURACY_M is reached.
LoadingView renders a circular progress bar around the edge plus the
"Standort wird bestimmt" prompt; on callback it persists a new Event
via EventStore.add and transitions to SuccessView (green checkmark,
short vibration, auto-close) or ErrorView (red alert, 3× vibration,
German message, longer hold). TextUtils extracts the shared
multi-line centered text rendering so MenuView, LoadingView and
ErrorView all render wrapped German text consistently. Positioning
permission added to manifest.

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

source/MenuDelegate.mc

@@ -1,9 +1,9 @@
 import Toybox.Lang;
 import Toybox.WatchUi;
 
-// Routes menu input. UP/DOWN rotate the ring; START/STOP selects.
-// Dispatch of event-type keys is wired up in later phases — for now
-// each selection just logs and no-ops.
+// Routes menu input. UP/DOWN rotate the ring. START/STOP dispatches:
+//   - event types (arrest, start, …) push the GPS LoadingView
+//   - history / delete are stubbed until later phases
 class MenuDelegate extends WatchUi.BehaviorDelegate {
 
     private var _view as MenuView;
@@ -25,7 +25,18 @@ class MenuDelegate extends WatchUi.BehaviorDelegate {
 
     function onSelect() as Boolean {
         var item = _view.selectedItem();
-        Logger.log("menu.select: " + (item[:key] as String));
+        var key = item[:key] as String;
+
+        if (key.equals(Config.ACTION_HISTORY)) {
+            // Phase 4
+            return true;
+        }
+        if (key.equals(Config.ACTION_DELETE)) {
+            // Phase 5
+            return true;
+        }
+
+        WatchUi.pushView(new LoadingView(key), null, WatchUi.SLIDE_IMMEDIATE);
         return true;
     }
 }