Dashboard Studio 2.2.0: guest invites, personal looks, more themes, Haven widgets and tiles

- Vacuum card: the robot drawn beside its dock by state, last clean, maintenance
- Formula One card: the official F1 look with a user-supplied logo
- Nine more themes; per-person theme, text size and language on Admin, People
- Guest invites: an expiring link and QR code for one dashboard, served on a
  LAN-only guest port, with the Home Assistant connection filtered both ways
- Haven 2.2: home screen widgets, three quick settings tiles, several homes,
  and self-updates from the Haven that Dashboard Studio serves

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

haven/res/xml/widget_info.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:configure="nl.melvanveen.haven.PickActivity"
+    android:initialLayout="@layout/widget_entity"
+    android:minWidth="180dp"
+    android:minHeight="56dp"
+    android:minResizeWidth="110dp"
+    android:minResizeHeight="40dp"
+    android:resizeMode="horizontal|vertical"
+    android:targetCellWidth="3"
+    android:targetCellHeight="1"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen"
+    android:description="@string/widget_desc" />