docs(architecture): update Facade diagram with Guardian dashboard controller

ooad-docs/03_Facade_Pattern.puml

@@ -75,6 +75,12 @@ package "③  Facade Pattern  [Structural]" #FFF8E1 {
     class "LocationService\n<<Service>>" as LocationService <<Subsystem>>
     class "ActivityLogService\n<<Service>>" as ActivityService <<Subsystem>>
     class "SosService\n<<Service>>" as SosServiceFacade <<Subsystem>>
+    class "NotificationService\n<<Service>>" as NotifServiceFacade <<Subsystem>>
+
+    class "GuardianDashboardController\n<<Client>>" as GuardianDashboardController {
+        + getDashboard(guardianId) : ResponseEntity
+        ' GET /api/v1/guardian/dashboard
+    }
 
     WalkGuideBlocFacade --> VoiceCommandHandler : processText()
     VoiceCommandHandler --> SttServiceFacade : delegates
@@ -82,9 +88,11 @@ package "③  Facade Pattern  [Structural]" #FFF8E1 {
     VoiceCommandHandler --> GoRouterFacade : delegates
     VoiceCommandHandler --> SosBlocFacade : delegates
 
+    GuardianDashboardController --> GuardianDashboardService : getDashboard()
     GuardianDashboardService --> LocationService : aggregates
     GuardianDashboardService --> ActivityService : aggregates
     GuardianDashboardService --> SosServiceFacade : aggregates
+    GuardianDashboardService --> NotifServiceFacade : aggregates
 }
 
 note right of VoiceCommandHandler
@@ -94,4 +102,11 @@ note right of VoiceCommandHandler
   → route navigation → BLoC event dispatch
 end note
 
+note right of GuardianDashboardService
+  Client (Controller) hanya panggil getDashboard(guardianId)
+  Facade mengagregasi 4 service sekaligus:
+  location + activity + SOS + notification
+  → satu response, satu request dari Flutter
+end note
+
 @enduml