feat: add weekly summary notifications

Adds Sunday weekly recap push notifications summarizing couple match
activity. Includes edge function, migration, notification preference
toggle, and mobile notification handling.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/mobile/src/features/profile/components/NotificationSettings.tsx

@@ -38,6 +38,7 @@ export const NotificationSettings: React.FC<NotificationSettingsProps> = ({
         onPackChangesToggle: (value: boolean) => updatePreference('pack_changes_enabled', value),
         onNewPacksToggle: (value: boolean) => updatePreference('new_packs_enabled', value),
         onStreakMilestonesToggle: (value: boolean) => updatePreference('streak_milestones_enabled', value),
+        onWeeklySummaryToggle: (value: boolean) => updatePreference('weekly_summary_enabled', value),
     }), [updatePreference]);
 
     return (
@@ -133,6 +134,17 @@ export const NotificationSettings: React.FC<NotificationSettingsProps> = ({
                         onValueChange={handlers.onStreakMilestonesToggle}
                         disabled={isUpdating}
                     />
+
+                    <View style={styles.itemDivider} />
+
+                    <SwitchItem
+                        icon="calendar-outline"
+                        label="Weekly Recap"
+                        description="Sunday summary of your weekly matches"
+                        value={preferences.weekly_summary_enabled}
+                        onValueChange={handlers.onWeeklySummaryToggle}
+                        disabled={isUpdating}
+                    />
                 </>
             )}
         </SettingsSection>