fixing a ton of sloppy mess...

ooad-docs/BENCHMARK_EVIDENCE_TEMPLATE.md

@@ -0,0 +1,39 @@
+# Benchmark Evidence Template
+
+This file is intentionally a template, not a fabricated result. Fill it after running benchmarks on the required machine/device.
+
+## Flutter Device Benchmark
+
+| Metric | Tool | Threshold | Result | Evidence File |
+|---|---|---:|---:|---|
+| Memory baseline | DevTools Memory | report MB | TBD | screenshot TBD |
+| Memory leak check | DevTools Memory | no steady growth | TBD | screenshot TBD |
+| Frame rate / jank | DevTools Performance | >= 90% frames < 16ms | TBD | screenshot TBD |
+| CPU profile | DevTools CPU Profiler | top 3 operations documented | TBD | screenshot TBD |
+| API latency | Dio logs | < 1500ms | TBD | log TBD |
+| Cold start | `flutter run --profile --trace-startup` | < 3000ms | TBD | trace TBD |
+| APK size | `flutter build apk --analyze-size` | < 50MB | TBD | report TBD |
+
+## Backend Load Benchmark
+
+| Metric | Tool | Threshold | Result | Evidence File |
+|---|---|---:|---:|---|
+| Throughput | k6/JMeter | >= 100 req/s | TBD | k6 summary TBD |
+| p95 latency | k6/JMeter | < 500ms | TBD | k6 summary TBD |
+| Error rate | k6/JMeter | < 1% | TBD | k6 summary TBD |
+| Slow query | DB/Actuator logs | no query > 200ms | TBD | log TBD |
+| JVM memory | Actuator metrics | no heap exhaustion | TBD | metrics TBD |
+
+## Commands To Run
+
+```powershell
+cd "D:\CodeSpace\Final Project Gabungan - Broken Test\walkguide-mobile\walkguide_app"
+flutter run --profile --trace-startup
+flutter build apk --analyze-size
+```
+
+```bash
+cd "walkguide-backend/demo/k6-tests"
+./run-all-tests.sh smoke
+./run-all-tests.sh load
+```

ooad-docs/DESIGN_PATTERNS.md

@@ -0,0 +1,38 @@
+# WalkGuide Design Pattern Documentation
+
+## Builder - Creational
+- Backend DTO/entity builders via Lombok `@Builder`.
+- Files: `PairingStatusResponse.java`, `AgoraTokenResponse.java`, entity classes such as `PairingRelation.java`.
+- Reason: response/entity construction has many optional fields, so builder calls are clearer than long constructors.
+
+## Singleton / Service Locator - Creational
+- Flutter registers app-wide services once with GetIt.
+- File: `walkguide-mobile/walkguide_app/lib/app/injection_container.dart`.
+- Examples: `TtsService`, `WebSocketService`, `CallService`, `YoloDetector`.
+- Reason: resource-heavy services need one shared lifecycle.
+
+## Facade - Structural
+- Flutter service classes hide low-level plugins from UI.
+- Files: `TtsService`, `HapticService`, `FcmService`, `CallService`, `WebSocketService`.
+- Reason: screens call simple domain-oriented methods instead of plugin APIs directly.
+
+## Repository - Structural
+- Backend repositories abstract JPA persistence.
+- Files: `UserRepository`, `PairingRelationRepository`, `LocationHistoryRepository`, etc.
+- Reason: service layer works against repository contracts, not SQL.
+
+## Observer - Behavioral
+- Flutter BLoC/Cubit and ChangeNotifier notify screens on state changes.
+- Backend WebSocket broker pushes location/SOS/notification updates to subscribers.
+- Files: `AppCubit`, `WebSocketService`, `LocationBroadcaster`.
+- Reason: real-time features need push updates without polling.
+
+## Strategy - Behavioral
+- Obstacle direction/distance analysis can vary independently from camera capture.
+- File: `core/ai/obstacle_analyzer.dart`.
+- Reason: detection interpretation is isolated so thresholds/rules can evolve.
+
+## Chain of Responsibility - Behavioral
+- Dio interceptors handle token injection, refresh, and error flow.
+- File: `core/network/api_client.dart`.
+- Reason: each request passes through consistent auth/error handling before reaching UI.

ooad-docs/TRACEABILITY_AUDIT.md

@@ -0,0 +1,29 @@
+# WalkGuide Traceability Audit
+
+## Use Case To Code
+
+| Use Case | Flutter Entry | Backend Entry | Status |
+|---|---|---|---|
+| Register/Login | `features/auth/*` | `AuthController`, `AuthService` | Implemented |
+| Pair Guardian/User | `features/pairing/pairing_screens.dart` | `PairingController`, `PairingService` | Implemented |
+| Start/Stop WalkGuide | `features/walk_guide/walk_guide_screen.dart` | `POST /user/walkguide/start`, `POST /user/walkguide/stop` | Implemented |
+| Obstacle Detection | `core/ai/*`, `walk_guide_screen.dart` | `POST /user/obstacle` | Partially implemented; real `.tflite` model file still required |
+| Location Tracking | `LocationReporterService`, navigation/walk screens | `LocationService`, `LocationBroadcaster` | Implemented |
+| SOS | `features/sos/sos_screen.dart` | `SosService`, `GuardianController` | Implemented |
+| Notifications | `features/notifications/notification_screen.dart` | `NotificationService`, `FcmService` | Partially implemented; backend FCM is log-only without credentials |
+| Guardian Dashboard | `guardian_dashboard_screen.dart` | `GuardianDashboardService` | Implemented |
+| Call | `features/call/call_screen.dart`, `CallService` | `CallController`, `AgoraTokenService` | Partially implemented; Agora App ID/credential required for live call |
+| Geofence | guardian dashboard screens | `GeofenceService` | Implemented |
+
+## Design Deviations
+
+- Flutter uses a pragmatic mix of BLoC/Cubit, ChangeNotifier, and StatefulWidget. This deviates from strict full-BLoC architecture but keeps feature screens small for the exam demo.
+- Offline storage uses `SharedPreferences` queue instead of a full Drift database for cached entities. The dependency exists, but production-grade SQLite cache is not fully wired.
+- Backend FCM service is log-only until Firebase Admin credentials are provided.
+- Agora call flow is implemented at API and service level, but live RTC depends on a real Agora App ID.
+
+## Remaining Evidence
+
+- Export rendered OOAD diagrams from the PlantUML files in this folder.
+- Run backend tests and archive JaCoCo/Surefire reports.
+- Run Flutter benchmarks on a physical Android device and add screenshots/results.

ooad-docs/diagrams/class-diagram.puml

@@ -0,0 +1,71 @@
+@startuml
+skinparam classAttributeIconSize 0
+
+class User {
+  +Long id
+  +String email
+  +String role
+  +String uniqueUserId
+  +String displayName
+  +String fcmToken
+}
+
+class PairingRelation {
+  +Long id
+  +PairingStatus status
+  +LocalDateTime invitedAt
+  +LocalDateTime respondedAt
+}
+
+class LocationHistory
+class ActivityLog
+class ObstacleLog
+class GuardianNotification
+class SosEvent
+class UserSettings
+class AiConfig
+class VoiceCommandConfig
+class HardwareShortcut
+class GeofenceConfig
+class RefreshToken
+
+User "1" -- "0..*" LocationHistory
+User "1" -- "0..*" ActivityLog
+User "1" -- "0..*" ObstacleLog
+User "1" -- "0..*" SosEvent
+User "1" -- "0..1" UserSettings
+User "1" -- "0..*" RefreshToken
+User "1" -- "0..*" PairingRelation : guardian
+User "1" -- "0..*" PairingRelation : user
+PairingRelation "1" -- "0..*" GuardianNotification
+PairingRelation "1" -- "0..1" AiConfig
+PairingRelation "1" -- "0..*" VoiceCommandConfig
+PairingRelation "1" -- "0..*" HardwareShortcut
+PairingRelation "1" -- "0..1" GeofenceConfig
+
+class AuthController
+class PairingController
+class UserController
+class GuardianController
+class CallController
+class AuthService
+class PairingService
+class LocationService
+class NotificationService
+class SosService
+class AgoraTokenService
+class FcmService
+class LocationBroadcaster
+
+AuthController --> AuthService
+PairingController --> PairingService
+UserController --> LocationService
+UserController --> SosService
+GuardianController --> NotificationService
+GuardianController --> SosService
+CallController --> AgoraTokenService
+CallController --> FcmService
+LocationService --> LocationBroadcaster
+NotificationService --> LocationBroadcaster
+SosService --> LocationBroadcaster
+@enduml

ooad-docs/diagrams/component-diagram.puml

@@ -0,0 +1,35 @@
+@startuml
+skinparam componentStyle rectangle
+
+component "Flutter Mobile App" {
+  [Presentation Screens]
+  [ApiClient + Interceptors]
+  [TTS/STT/YOLO/Location Services]
+  [WebSocketService]
+  [CallService]
+}
+
+component "Spring Boot Backend" {
+  [Controllers]
+  [Services]
+  [Repositories]
+  [Security/JWT]
+  [WebSocket Broker]
+}
+
+database "PostgreSQL" as DB
+cloud "Firebase FCM" as FCM
+cloud "Agora RTC" as Agora
+cloud "OpenStreetMap/OSRM" as Maps
+
+[Presentation Screens] --> [ApiClient + Interceptors]
+[ApiClient + Interceptors] --> [Controllers] : REST /api/v1
+[WebSocketService] --> [WebSocket Broker] : STOMP /ws
+[CallService] --> [Controllers] : /shared/call
+[Controllers] --> [Services]
+[Services] --> [Repositories]
+[Repositories] --> DB
+[Services] --> FCM
+[CallService] --> Agora
+[Presentation Screens] --> Maps
+@enduml

ooad-docs/diagrams/erd-diagram.puml

@@ -0,0 +1,101 @@
+@startuml
+hide circle
+skinparam linetype ortho
+
+entity users {
+  * id : BIGSERIAL <<PK>>
+  --
+  email : VARCHAR
+  password : VARCHAR
+  role : VARCHAR
+  unique_user_id : CHAR(12)
+  display_name : VARCHAR
+  fcm_token : VARCHAR
+  created_at : TIMESTAMP
+}
+
+entity pairing_relations {
+  * id : BIGSERIAL <<PK>>
+  --
+  guardian_id : BIGINT <<FK>>
+  user_id : BIGINT <<FK>>
+  status : VARCHAR
+  invited_at : TIMESTAMP
+  responded_at : TIMESTAMP
+}
+
+entity activity_logs {
+  * id : BIGSERIAL <<PK>>
+  --
+  user_id : BIGINT <<FK>>
+  log_type : VARCHAR
+  description : TEXT
+  metadata : JSONB
+  created_at : TIMESTAMP
+}
+
+entity obstacle_logs {
+  * id : BIGSERIAL <<PK>>
+  --
+  user_id : BIGINT <<FK>>
+  label : VARCHAR
+  confidence : FLOAT
+  direction : VARCHAR
+  estimated_dist : VARCHAR
+  lat : DOUBLE
+  lng : DOUBLE
+}
+
+entity location_history {
+  * id : BIGSERIAL <<PK>>
+  --
+  user_id : BIGINT <<FK>>
+  lat : DOUBLE
+  lng : DOUBLE
+  accuracy : FLOAT
+  speed : FLOAT
+  heading : FLOAT
+}
+
+entity guardian_notifications {
+  * id : BIGSERIAL <<PK>>
+  --
+  guardian_id : BIGINT <<FK>>
+  user_id : BIGINT <<FK>>
+  notif_type : VARCHAR
+  content : TEXT
+  is_read : BOOLEAN
+}
+
+entity sos_events {
+  * id : BIGSERIAL <<PK>>
+  --
+  user_id : BIGINT <<FK>>
+  trigger_type : VARCHAR
+  lat : DOUBLE
+  lng : DOUBLE
+  status : VARCHAR
+}
+
+entity user_settings
+entity ai_configs
+entity voice_command_configs
+entity hardware_shortcuts
+entity geofence_configs
+entity refresh_tokens
+
+users ||--o{ pairing_relations : guardian_id
+users ||--o{ pairing_relations : user_id
+users ||--o{ activity_logs
+users ||--o{ obstacle_logs
+users ||--o{ location_history
+users ||--o{ guardian_notifications : guardian_id
+users ||--o{ guardian_notifications : user_id
+users ||--o{ sos_events
+users ||--o| user_settings
+users ||--o{ refresh_tokens
+pairing_relations ||--o| ai_configs
+pairing_relations ||--o{ voice_command_configs
+pairing_relations ||--o{ hardware_shortcuts
+pairing_relations ||--o| geofence_configs
+@enduml

ooad-docs/diagrams/sequence-login.puml

@@ -0,0 +1,19 @@
+@startuml
+actor User
+participant "Flutter LoginScreen" as UI
+participant "ApiClient/Dio" as Dio
+participant "AuthController" as Controller
+participant "AuthService" as Service
+database "PostgreSQL" as DB
+
+User -> UI : enter email/password
+UI -> Dio : POST /api/v1/auth/login
+Dio -> Controller : LoginRequest
+Controller -> Service : login(req)
+Service -> DB : find user + refresh token
+DB --> Service : user
+Service --> Controller : AuthDataResponse
+Controller --> Dio : ApiResponse<AuthDataResponse>
+Dio --> UI : tokens + role
+UI -> UI : save tokens and route by role
+@enduml

ooad-docs/diagrams/sequence-pairing.puml

@@ -0,0 +1,23 @@
+@startuml
+actor Guardian
+actor User
+participant "GuardianPairingScreen" as GUI
+participant "PairingController" as Controller
+participant "PairingService" as Service
+database "PostgreSQL" as DB
+participant "FcmService" as FCM
+
+Guardian -> GUI : input uniqueUserId
+GUI -> Controller : POST /shared/pairing/invite
+Controller -> Service : inviteUser(guardianId, uniqueUserId)
+Service -> DB : validate and create PENDING relation
+Service -> FCM : notify user
+Service --> Controller : PairingStatusResponse
+Controller --> GUI : invite status
+
+User -> Controller : POST /shared/pairing/respond
+Controller -> Service : respondToPairing(userId, pairingId, accept)
+Service -> DB : update ACTIVE/REJECTED
+Service -> DB : seed default AI/voice/shortcut configs
+Service -> FCM : notify guardian
+@enduml

ooad-docs/diagrams/sequence-sos.puml

@@ -0,0 +1,22 @@
+@startuml
+actor User
+actor Guardian
+participant "SosScreen" as UI
+participant "UserController" as UserController
+participant "SosService" as SosService
+database "PostgreSQL" as DB
+participant "FcmService" as FCM
+participant "LocationBroadcaster" as WS
+participant "GuardianDashboard" as Dashboard
+
+User -> UI : press SOS / voice command
+UI -> UserController : POST /api/v1/user/sos
+UserController -> SosService : triggerSos(userId, req)
+SosService -> DB : save sos_events
+SosService -> FCM : push high-priority SOS
+SosService -> WS : /queue/sos/{guardianId}
+WS -> Dashboard : realtime SOS alert
+Guardian -> Dashboard : acknowledge
+Dashboard -> SosService : PUT /guardian/sos/{id}/acknowledge
+SosService -> DB : status ACKNOWLEDGED
+@enduml

ooad-docs/diagrams/state-sos-event.puml

@@ -0,0 +1,7 @@
+@startuml
+[*] --> TRIGGERED : User sends SOS
+TRIGGERED --> ACKNOWLEDGED : Guardian acknowledges
+ACKNOWLEDGED --> RESOLVED : incident handled
+TRIGGERED --> RESOLVED : auto/manual close
+RESOLVED --> [*]
+@enduml

ooad-docs/diagrams/use-case-diagram.puml

@@ -0,0 +1,45 @@
+@startuml
+left to right direction
+actor "User\n(Visually Impaired)" as User
+actor "Guardian" as Guardian
+actor "Firebase FCM" as FCM
+actor "Agora RTC" as Agora
+actor "OpenStreetMap/OSRM" as Map
+
+rectangle "WalkGuide System" {
+  usecase "Register/Login" as UCAuth
+  usecase "Pair Guardian and User" as UCPair
+  usecase "Start WalkGuide" as UCWalk
+  usecase "Detect Obstacle" as UCDetect
+  usecase "Report Location" as UCLoc
+  usecase "Trigger SOS" as UCSos
+  usecase "Read Notifications" as UCNotif
+  usecase "Call Partner" as UCCall
+  usecase "Monitor Dashboard" as UCDash
+  usecase "Configure AI, TTS,\nVoice Commands, Geofence" as UCConfig
+  usecase "Acknowledge SOS" as UCAck
+  usecase "Navigate Route" as UCNav
+}
+
+User --> UCAuth
+Guardian --> UCAuth
+Guardian --> UCPair
+User --> UCPair
+User --> UCWalk
+UCWalk --> UCDetect : <<include>>
+UCWalk --> UCLoc : <<include>>
+User --> UCSos
+User --> UCNotif
+User --> UCCall
+Guardian --> UCCall
+Guardian --> UCDash
+Guardian --> UCConfig
+Guardian --> UCAck
+User --> UCNav
+
+UCSos --> FCM
+UCNotif --> FCM
+UCCall --> Agora
+UCCall --> FCM
+UCNav --> Map
+@enduml

walkguide-backend/demo/src/main/java/com/walkguide/dto/response/PairingStatusResponse.java

@@ -8,6 +8,7 @@ import java.time.LocalDateTime;
 public class PairingStatusResponse {
     private Long pairingId;
     private String status;         // PENDING, ACTIVE, REJECTED, NONE
+    private Long pairedWithId;     // ID partner yang dipair
     private String pairedWithName; // nama Guardian (untuk User) atau nama User (untuk Guardian)
     private String pairedWithEmail;
     private String uniqueUserId;   // ID user yang di-pair

walkguide-backend/demo/src/main/java/com/walkguide/service/PairingService.java

@@ -207,6 +207,7 @@ public class PairingService {
         return PairingStatusResponse.builder()
                 .pairingId(p.getId())
                 .status(p.getStatus().name())
+                .pairedWithId("GUARDIAN".equals(viewerRole) ? user.getId() : guardian.getId())
                 .pairedWithName(pairedWithName)
                 .pairedWithEmail(pairedWithEmail)
                 .uniqueUserId(user.getUniqueUserId())

walkguide-backend/demo/src/main/resources/openapi.yaml

@@ -0,0 +1,287 @@
+openapi: 3.0.3
+info:
+  title: WalkGuide API
+  version: 1.0.0
+  description: Design contract for WalkGuide Flutter and Spring Boot integration.
+servers:
+  - url: http://localhost:8080/api/v1
+security:
+  - bearerAuth: []
+components:
+  securitySchemes:
+    bearerAuth:
+      type: http
+      scheme: bearer
+      bearerFormat: JWT
+  schemas:
+    ApiResponse:
+      type: object
+      properties:
+        success: { type: boolean }
+        data: { nullable: true }
+        message: { type: string }
+        timestamp: { type: string, format: date-time }
+    LoginRequest:
+      type: object
+      required: [email, password]
+      properties:
+        email: { type: string, format: email }
+        password: { type: string }
+    RegisterRequest:
+      type: object
+      required: [email, password, displayName, role]
+      properties:
+        email: { type: string, format: email }
+        password: { type: string, minLength: 6 }
+        displayName: { type: string }
+        role: { type: string, enum: [USER, GUARDIAN] }
+    PairingInviteRequest:
+      type: object
+      required: [uniqueUserId]
+      properties:
+        uniqueUserId: { type: string, minLength: 12, maxLength: 12 }
+    PairingRespondRequest:
+      type: object
+      required: [pairingId, accept]
+      properties:
+        pairingId: { type: integer, format: int64 }
+        accept: { type: boolean }
+    LocationUpdateRequest:
+      type: object
+      properties:
+        lat: { type: number, format: double }
+        lng: { type: number, format: double }
+        accuracy: { type: number, format: double }
+        speed: { type: number, format: double }
+        heading: { type: number, format: double }
+    CallTokenRequest:
+      type: object
+      required: [receiverId]
+      properties:
+        receiverId: { type: integer, format: int64 }
+paths:
+  /auth/ping:
+    get:
+      security: []
+      responses:
+        "200": { description: Server health, content: { application/json: { schema: { $ref: "#/components/schemas/ApiResponse" } } } }
+  /auth/register:
+    post:
+      security: []
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema: { $ref: "#/components/schemas/RegisterRequest" }
+      responses:
+        "200": { description: Registered }
+  /auth/login:
+    post:
+      security: []
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema: { $ref: "#/components/schemas/LoginRequest" }
+      responses:
+        "200": { description: Logged in }
+  /auth/refresh:
+    post:
+      security: []
+      responses:
+        "200": { description: Token refreshed }
+  /auth/logout:
+    post:
+      responses:
+        "200": { description: Logged out }
+  /auth/fcm-token:
+    put:
+      responses:
+        "200": { description: FCM token updated }
+  /shared/pairing/invite:
+    post:
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema: { $ref: "#/components/schemas/PairingInviteRequest" }
+      responses:
+        "200": { description: Invite sent }
+  /shared/pairing/respond:
+    post:
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema: { $ref: "#/components/schemas/PairingRespondRequest" }
+      responses:
+        "200": { description: Invite responded }
+  /shared/pairing/unpair:
+    delete:
+      responses:
+        "200": { description: Pairing removed }
+  /shared/pairing/status:
+    get:
+      responses:
+        "200": { description: Pairing status }
+  /shared/call/token:
+    post:
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema: { $ref: "#/components/schemas/CallTokenRequest" }
+      responses:
+        "200": { description: Agora token generated }
+  /shared/call/notify:
+    post:
+      responses:
+        "200": { description: Incoming call notification sent }
+  /shared/call/end:
+    post:
+      responses:
+        "200": { description: Call end notification sent }
+  /user/profile:
+    get:
+      responses:
+        "200": { description: Current user profile }
+  /user/settings:
+    get:
+      responses:
+        "200": { description: User settings }
+    put:
+      responses:
+        "200": { description: User settings updated }
+  /user/voice-commands:
+    get:
+      responses:
+        "200": { description: Voice commands }
+  /user/shortcuts:
+    get:
+      responses:
+        "200": { description: Hardware shortcuts }
+    put:
+      responses:
+        "200": { description: Hardware shortcut updated }
+  /user/ai-config:
+    get:
+      responses:
+        "200": { description: AI config }
+  /user/location:
+    post:
+      requestBody:
+        content:
+          application/json:
+            schema: { $ref: "#/components/schemas/LocationUpdateRequest" }
+      responses:
+        "200": { description: Location stored }
+  /user/obstacle:
+    post:
+      responses:
+        "200": { description: Obstacle stored }
+  /user/sos:
+    post:
+      responses:
+        "200": { description: SOS triggered }
+  /user/activity-logs:
+    get:
+      responses:
+        "200": { description: User activity logs }
+  /user/notifications:
+    get:
+      responses:
+        "200": { description: User notifications }
+  /user/notifications/unread-count:
+    get:
+      responses:
+        "200": { description: Unread notification count }
+  /user/notifications/mark-all-read:
+    put:
+      responses:
+        "200": { description: All notifications marked read }
+  /user/notifications/{id}/read:
+    put:
+      parameters:
+        - in: path
+          name: id
+          required: true
+          schema: { type: integer, format: int64 }
+      responses:
+        "200": { description: One notification marked read }
+  /user/walkguide/start:
+    post:
+      responses:
+        "200": { description: WalkGuide start logged }
+  /user/walkguide/stop:
+    post:
+      responses:
+        "200": { description: WalkGuide stop logged }
+  /guardian/dashboard:
+    get:
+      responses:
+        "200": { description: Guardian dashboard }
+  /guardian/user-location:
+    get:
+      responses:
+        "200": { description: Paired user latest location }
+  /guardian/location-history:
+    get:
+      responses:
+        "200": { description: Paired user location history }
+  /guardian/activity-logs:
+    get:
+      responses:
+        "200": { description: Paired user activity logs }
+  /guardian/obstacle-logs:
+    get:
+      responses:
+        "200": { description: Paired user obstacle logs }
+  /guardian/notifications/send:
+    post:
+      responses:
+        "200": { description: Notification sent to paired user }
+  /guardian/sos-events:
+    get:
+      responses:
+        "200": { description: Paired user SOS events }
+  /guardian/sos/{id}/acknowledge:
+    put:
+      parameters:
+        - in: path
+          name: id
+          required: true
+          schema: { type: integer, format: int64 }
+      responses:
+        "200": { description: SOS acknowledged }
+  /guardian/ai-config:
+    get:
+      responses:
+        "200": { description: Paired user AI config }
+    put:
+      responses:
+        "200": { description: Paired user AI config updated }
+  /guardian/voice-commands:
+    get:
+      responses:
+        "200": { description: Paired user voice commands }
+    put:
+      responses:
+        "200": { description: Paired user voice command updated }
+  /guardian/shortcuts:
+    get:
+      responses:
+        "200": { description: Paired user shortcuts }
+  /guardian/geofence:
+    get:
+      responses:
+        "200": { description: Geofence config }
+    put:
+      responses:
+        "200": { description: Geofence config updated }
+  /guardian/user-settings:
+    get:
+      responses:
+        "200": { description: Paired user settings }
+    put:
+      responses:
+        "200": { description: Paired user settings updated }

walkguide-mobile/walkguide_app/lib/core/services/call_service.dart

@@ -10,23 +10,68 @@ class CallService {
 
   CallService(this._apiClient);
 
-  Future<Map<String, dynamic>?> requestToken(String channelName) async {
+  Future<Map<String, dynamic>?> requestToken({required int receiverId}) async {
-    final res = await _apiClient.dio.post('/shared/call/token', data: {'channelName': channelName});
+    final res = await _apiClient.dio.post(
+      '/shared/call/token',
+      data: {'receiverId': receiverId},
+    );
     final data = res.data['data'];
     return data is Map<String, dynamic> ? data : null;
   }
 
-  Future<void> notifyIncomingCall({required int receiverId, required String channelName}) async {
+  Future<int?> getPairedReceiverId() async {
+    final res = await _apiClient.dio.get('/pairing/status');
+    final data = res.data['data'];
+    if (data is! Map<String, dynamic>) return null;
+    final id = data['pairedWithId'];
+    return id is num ? id.toInt() : int.tryParse(id?.toString() ?? '');
+  }
+
+  Future<void> notifyIncomingCall({
+    required int receiverId,
+    required String channelName,
+    String? agoraToken,
+    int receiverUid = 0,
+  }) async {
     await _apiClient.dio.post('/shared/call/notify', data: {
       'receiverId': receiverId,
       'channelName': channelName,
+      'agoraToken': agoraToken,
+      'receiverUid': receiverUid,
     });
   }
 
-  Future<bool> joinChannel({required String channelName, int uid = 0}) async {
+  Future<bool> callPairedUser({int uid = 0}) async {
+    final receiverId = await getPairedReceiverId();
+    if (receiverId == null) return false;
+
+    final tokenData = await requestToken(receiverId: receiverId);
+    final channelName = tokenData?['channelName']?.toString();
+    final token = tokenData?['token']?.toString();
+    if (channelName == null || channelName.isEmpty) return false;
+
+    final joined = await joinChannel(
+      channelName: channelName,
+      token: token,
+      uid: uid,
+    );
+    if (joined) {
+      await notifyIncomingCall(
+        receiverId: receiverId,
+        channelName: channelName,
+        agoraToken: token,
+        receiverUid: uid,
+      );
+    }
+    return joined;
+  }
+
+  Future<bool> joinChannel({
+    required String channelName,
+    String? token,
+    int uid = 0,
+  }) async {
     try {
-      final tokenData = await requestToken(channelName);
-      final token = tokenData?['token']?.toString();
       _engine ??= createAgoraRtcEngine();
       await _engine!.initialize(const RtcEngineContext(appId: AppConstants.agoraAppId));
       await _engine!.enableAudio();

walkguide-mobile/walkguide_app/lib/features/activity_log/activity_log_screen.dart

@@ -148,7 +148,7 @@ class _ActivityLogScreenState extends State<ActivityLogScreen> {
                     onSelected: (_) {
                       setState(() => _applyFilter(f));
                     },
-                    selectedColor: AppColors.primary.withOpacity(0.15),
+                    selectedColor: AppColors.primary.withValues(alpha: 0.15),
                     checkmarkColor: AppColors.primary,
                     labelStyle: TextStyle(
                       color: selected ? AppColors.primary : AppColors.muted,
@@ -232,7 +232,7 @@ class _LogCard extends StatelessWidget {
                 width: 36,
                 height: 36,
                 decoration: BoxDecoration(
-                  color: meta.color.withOpacity(0.12),
+                  color: meta.color.withValues(alpha: 0.12),
                   shape: BoxShape.circle,
                 ),
                 child: Icon(meta.icon, color: meta.color, size: 18),

walkguide-mobile/walkguide_app/lib/features/auth/splash_screen.dart

@@ -91,7 +91,7 @@ class _SplashScreenState extends State<SplashScreen>
                 width: 100,
                 height: 100,
                 decoration: BoxDecoration(
-                  color: Colors.white.withOpacity(0.12),
+                  color: Colors.white.withValues(alpha: 0.12),
                   borderRadius: BorderRadius.circular(28),
                 ),
                 child: const Icon(

walkguide-mobile/walkguide_app/lib/features/call/call_screen.dart

@@ -1,4 +1,4 @@
-// ignore_for_file: use_build_context_synchronously
+// ignore_for_file: use_build_context_synchronously, prefer_const_constructors
 // lib/features/call/call_screen.dart
 //
 // CallScreen        — user memanggil Guardian via Agora
@@ -34,8 +34,6 @@ class CallScreen extends StatefulWidget {
 
 class _CallScreenState extends State<CallScreen>
     with SingleTickerProviderStateMixin {
-  static const _channelName = 'walkguide-call';
-
   _CallPhase _phase = _CallPhase.calling;
   bool _muted = false;
   bool _speakerOn = true;
@@ -61,8 +59,7 @@ class _CallScreenState extends State<CallScreen>
   }
 
   Future<void> _startCall() async {
-    final joined =
+    final joined = await sl<CallService>().callPairedUser();
-        await sl<CallService>().joinChannel(channelName: _channelName);
 
     if (!mounted) return;
 

walkguide-mobile/walkguide_app/lib/features/home/presentation/guardian_dashboard_screen.dart

@@ -1,6 +1,5 @@
-// ignore_for_file: use_build_context_synchronously, deprecated_member_use
+// ignore_for_file: use_build_context_synchronously, deprecated_member_use, prefer_const_constructors
 import 'dart:async';
-import 'dart:math' as math;
 
 import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
@@ -36,7 +35,6 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
   bool _loading = true;
   String? _error;
   String _guardianName = 'Guardian';
-  int _refreshCount = 0;
 
   // ── Live location (WebSocket) ────────────────────────────────────────────────
   LatLng? _liveLatLng;
@@ -156,7 +154,6 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
           _liveLatLng = newLatLng;
         }
         _loading = false;
-        _refreshCount++;
       });
 
       // If SOS pending, start flash
@@ -672,7 +669,7 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
             Border.all(color: const Color(0xFFE2E8F0), width: 1),
         boxShadow: [
           BoxShadow(
-              color: Colors.black.withOpacity(0.04),
+              color: Colors.black.withValues(alpha: 0.04),
               blurRadius: 12,
               offset: const Offset(0, 2)),
         ],
@@ -708,7 +705,7 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
                             decoration: BoxDecoration(
                               shape: BoxShape.circle,
                               color: const Color(0xFF1A56DB)
-                                  .withOpacity(0.25 * _pulseAnim.value),
+                                  .withValues(alpha: 0.25 * _pulseAnim.value),
                             ),
                           ),
                           Container(
@@ -760,11 +757,11 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
                 padding: const EdgeInsets.symmetric(
                     horizontal: 10, vertical: 5),
                 decoration: BoxDecoration(
-                  color: Colors.white.withOpacity(0.92),
+                  color: Colors.white.withValues(alpha: 0.92),
                   borderRadius: BorderRadius.circular(20),
                   boxShadow: [
                     BoxShadow(
-                        color: Colors.black.withOpacity(0.1),
+                        color: Colors.black.withValues(alpha: 0.1),
                         blurRadius: 8),
                   ],
                 ),
@@ -801,7 +798,7 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
                       horizontal: 10, vertical: 5),
                   decoration: BoxDecoration(
                     color:
-                        const Color(0xFF1A56DB).withOpacity(0.9),
+                        const Color(0xFF1A56DB).withValues(alpha: 0.9),
                     borderRadius: BorderRadius.circular(20),
                   ),
                   child: Text('Buka Peta',
@@ -823,11 +820,11 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
                 padding: const EdgeInsets.symmetric(
                     horizontal: 10, vertical: 6),
                 decoration: BoxDecoration(
-                  color: Colors.white.withOpacity(0.92),
+                  color: Colors.white.withValues(alpha: 0.92),
                   borderRadius: BorderRadius.circular(8),
                   boxShadow: [
                     BoxShadow(
-                        color: Colors.black.withOpacity(0.08),
+                        color: Colors.black.withValues(alpha: 0.08),
                         blurRadius: 6),
                   ],
                 ),
@@ -859,7 +856,7 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
         border: Border.all(color: const Color(0xFFE2E8F0)),
         boxShadow: [
           BoxShadow(
-              color: Colors.black.withOpacity(0.04),
+              color: Colors.black.withValues(alpha: 0.04),
               blurRadius: 12,
               offset: const Offset(0, 2)),
         ],
@@ -872,7 +869,7 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
             CircleAvatar(
               radius: 20,
               backgroundColor:
-                  const Color(0xFF1A56DB).withOpacity(0.1),
+                  const Color(0xFF1A56DB).withValues(alpha: 0.1),
               child: Text(
                 d.userName.isNotEmpty
                     ? d.userName[0].toUpperCase()
@@ -1051,7 +1048,7 @@ class _GuardianDashboardScreenState extends State<GuardianDashboardScreen>
         border: Border.all(color: const Color(0xFFE2E8F0)),
         boxShadow: [
           BoxShadow(
-              color: Colors.black.withOpacity(0.04),
+              color: Colors.black.withValues(alpha: 0.04),
               blurRadius: 12,
               offset: const Offset(0, 2)),
         ],
@@ -1357,7 +1354,7 @@ class _KpiCard extends StatelessWidget {
             width: 1),
         boxShadow: [
           BoxShadow(
-              color: Colors.black.withOpacity(0.03),
+              color: Colors.black.withValues(alpha: 0.03),
               blurRadius: 8),
         ],
       ),
@@ -1421,7 +1418,7 @@ class _ActivityTile extends StatelessWidget {
           width: 32,
           height: 32,
           decoration: BoxDecoration(
-            color: cfg.color.withOpacity(0.1),
+            color: cfg.color.withValues(alpha: 0.1),
             borderRadius: BorderRadius.circular(8),
           ),
           child: Icon(cfg.icon, size: 16, color: cfg.color),
@@ -1485,7 +1482,7 @@ class _QuickActionCard extends StatelessWidget {
                 width: 28,
                 height: 28,
                 decoration: BoxDecoration(
-                  color: item.color.withOpacity(0.1),
+                  color: item.color.withValues(alpha: 0.1),
                   borderRadius: BorderRadius.circular(7),
                 ),
                 child: Icon(item.icon,
@@ -1527,7 +1524,7 @@ class _SosBadge extends StatelessWidget {
         borderRadius: BorderRadius.circular(20),
         boxShadow: [
           BoxShadow(
-              color: const Color(0xFFDC2626).withOpacity(0.4),
+              color: const Color(0xFFDC2626).withValues(alpha: 0.4),
               blurRadius: 8,
               spreadRadius: 1),
         ],

walkguide-mobile/walkguide_app/lib/features/navigation_mode/navigation_mode_screen.dart

@@ -100,7 +100,7 @@ class _NavState extends ChangeNotifier {
           'heading': pos.heading,
         })
         .timeout(const Duration(seconds: 5))
-        .catchError((_) => null);
+        .ignore();
   }
 
   // ── search Nominatim ─────────────────────────────────────────────────────

walkguide-mobile/walkguide_app/lib/features/notifications/notification_screen.dart

@@ -4,10 +4,8 @@
 import 'dart:async';
 import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
-import 'package:go_router/go_router.dart';
 import 'package:intl/intl.dart';
 import '../../app/injection_container.dart';
-import '../../core/constants/app_constants.dart';
 import '../../core/network/api_client.dart';
 import '../../core/services/tts_service.dart';
 import '../../core/theme/app_colors.dart';
@@ -254,13 +252,13 @@ class _NotifCard extends StatelessWidget {
         borderRadius: BorderRadius.circular(14),
         border: Border.all(
           color: unread
-              ? AppColors.primary.withOpacity(0.3)
+              ? AppColors.primary.withValues(alpha: 0.3)
               : const Color(0xFFE2E8F0),
           width: unread ? 1.5 : 1,
         ),
         boxShadow: [
           BoxShadow(
-            color: Colors.black.withOpacity(0.04),
+            color: Colors.black.withValues(alpha: 0.04),
             blurRadius: 8,
             offset: const Offset(0, 2),
           ),
@@ -279,8 +277,8 @@ class _NotifCard extends StatelessWidget {
                   height: 36,
                   decoration: BoxDecoration(
                     color: isVoice
-                        ? AppColors.success.withOpacity(0.12)
+                        ? AppColors.success.withValues(alpha: 0.12)
-                        : AppColors.primary.withOpacity(0.12),
+                        : AppColors.primary.withValues(alpha: 0.12),
                     borderRadius: BorderRadius.circular(10),
                   ),
                   child: Icon(

walkguide-mobile/walkguide_app/lib/features/pairing/pairing_screens.dart

@@ -1,10 +1,9 @@
-// ignore_for_file: use_build_context_synchronously, deprecated_member_use
+// ignore_for_file: use_build_context_synchronously, deprecated_member_use, prefer_const_constructors
 
 import 'dart:async';
 
 import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
-import 'package:go_router/go_router.dart';
 
 import '../../app/injection_container.dart';
 import '../../core/network/api_client.dart';
@@ -382,10 +381,8 @@ class _Page extends StatelessWidget {
   final String title;
   final String? subtitle;
   final Widget child;
-  final List<Widget>? actions;
 
-  const _Page(
+  const _Page({required this.title, required this.child, this.subtitle});
-      {required this.title, required this.child, this.subtitle, this.actions});
 
   @override
   Widget build(BuildContext context) {
@@ -412,7 +409,6 @@ class _Page extends StatelessWidget {
                     ],
                   ),
                 ),
-                ...?actions,
               ],
             ),
             const SizedBox(height: 16),

walkguide-mobile/walkguide_app/lib/features/screens.dart

@@ -2168,10 +2168,10 @@ class _MapStatus extends StatelessWidget {
   Widget build(BuildContext context) {
     return DecoratedBox(
       decoration: BoxDecoration(
-        color: Colors.white.withOpacity(0.92),
+        color: Colors.white.withValues(alpha: 0.92),
         borderRadius: BorderRadius.circular(12),
         boxShadow: [
-          BoxShadow(color: Colors.black.withOpacity(0.12), blurRadius: 18)
+          BoxShadow(color: Colors.black.withValues(alpha: 0.12), blurRadius: 18)
         ],
       ),
       child: Padding(
@@ -2251,7 +2251,7 @@ class _Pill extends StatelessWidget {
   Widget build(BuildContext context) {
     return DecoratedBox(
       decoration: BoxDecoration(
-          color: color.withOpacity(0.16),
+          color: color.withValues(alpha: 0.16),
           borderRadius: BorderRadius.circular(999),
           border: Border.all(color: color)),
       child: Padding(

walkguide-mobile/walkguide_app/lib/features/settings/user_settings_screen.dart

@@ -1,4 +1,4 @@
-// ignore_for_file: use_build_context_synchronously
+// ignore_for_file: use_build_context_synchronously, prefer_const_constructors, deprecated_member_use
 // lib/features/settings/user_settings_screen.dart
 
 import 'dart:async';
@@ -146,10 +146,10 @@ class _UserSettingsScreenState extends State<UserSettingsScreen> {
   Future<void> _logout() async {
     await sl<SecureStorage>().clearAll();
     context.read<AppCubit>().clearSession();
-    unawaited(_api
+    _api
         .post('/auth/logout')
         .timeout(const Duration(seconds: 3))
-        .catchError((_) => null));
+        .ignore();
     if (mounted) context.go('/login');
   }
 

walkguide-mobile/walkguide_app/lib/features/sos/sos_screen.dart

@@ -1,12 +1,11 @@
 // lib/features/sos/sos_screen.dart
-// ignore_for_file: use_build_context_synchronously
+// ignore_for_file: use_build_context_synchronously, prefer_const_constructors, curly_braces_in_flow_control_structures
 
 import 'dart:async';
 
 import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:geolocator/geolocator.dart';
-import 'package:go_router/go_router.dart';
 
 import '../../app/injection_container.dart';
 import '../../core/network/api_client.dart';
@@ -326,7 +325,7 @@ class _SosButton extends StatelessWidget {
           backgroundColor:
               active ? const Color(0xFFB91C1C) : const Color(0xFFDC2626),
           elevation: active ? 12 : 4,
-          shadowColor: const Color(0xFFDC2626).withOpacity(0.5),
+          shadowColor: const Color(0xFFDC2626).withValues(alpha: 0.5),
         ),
         onPressed: onPressed,
         child: Column(
@@ -363,7 +362,7 @@ class _SendingIndicator extends StatelessWidget {
       dimension: 200,
       child: DecoratedBox(
         decoration: BoxDecoration(
-          color: const Color(0xFFDC2626).withOpacity(0.15),
+          color: const Color(0xFFDC2626).withValues(alpha: 0.15),
           shape: BoxShape.circle,
           border: Border.all(color: const Color(0xFFDC2626), width: 3),
         ),
@@ -505,7 +504,7 @@ class _SosEventTile extends StatelessWidget {
           Container(
             padding: const EdgeInsets.all(8),
             decoration: BoxDecoration(
-              color: statusColor.withOpacity(0.1),
+              color: statusColor.withValues(alpha: 0.1),
               shape: BoxShape.circle,
             ),
             child: Icon(statusIcon, color: statusColor, size: 20),
@@ -521,7 +520,7 @@ class _SosEventTile extends StatelessWidget {
                       padding: const EdgeInsets.symmetric(
                           horizontal: 8, vertical: 2),
                       decoration: BoxDecoration(
-                        color: statusColor.withOpacity(0.1),
+                        color: statusColor.withValues(alpha: 0.1),
                         borderRadius: BorderRadius.circular(99),
                       ),
                       child: Text(

walkguide-mobile/walkguide_app/lib/features/walk_guide/walk_guide_screen.dart

@@ -466,7 +466,7 @@ class _Pill extends StatelessWidget {
   Widget build(BuildContext context) {
     return DecoratedBox(
       decoration: BoxDecoration(
-          color: color.withOpacity(0.16),
+          color: color.withValues(alpha: 0.16),
           borderRadius: BorderRadius.circular(999),
           border: Border.all(color: color)),
       child: Padding(
@@ -506,12 +506,10 @@ class _EmptyPanel extends StatelessWidget {
   final IconData icon;
   final String title;
   final String message;
-  final Widget? action;
   const _EmptyPanel(
       {required this.icon,
       required this.title,
-      required this.message,
+      required this.message});
-      this.action});
 
   @override
   Widget build(BuildContext context) {
@@ -533,10 +531,6 @@ class _EmptyPanel extends StatelessWidget {
                   const TextStyle(fontWeight: FontWeight.w800, fontSize: 18)),
           const SizedBox(height: 6),
           Text(message, textAlign: TextAlign.center),
-          if (action != null) ...[
-            const SizedBox(height: 12),
-            action!,
-          ],
         ],
       ),
     );

walkguide-mobile/walkguide_app/pubspec.lock

@@ -800,7 +800,7 @@ packages:
     source: sdk
     version: "0.0.0"
   intl:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: intl
       sha256: "3df61194eb431efc39c4ceba583b95633a403f46c9fd341e550ce0bfa50e9aa5"
@@ -947,10 +947,10 @@ packages:
     dependency: transitive
     description:
       name: meta
-      sha256: "23f08335362185a5ea2ad3a4e597f1375e78bce8a040df5c600c8d3552ef2394"
+      sha256: e3641ec5d63ebf0d9b41bd43201a66e3fc79a65db5f61fc181f04cd27aab950c
       url: "https://pub.dev"
     source: hosted
-    version: "1.17.0"
+    version: "1.16.0"
   mgrs_dart:
     dependency: transitive
     description:
@@ -1592,26 +1592,26 @@ packages:
     dependency: transitive
     description:
       name: test
-      sha256: "75906bf273541b676716d1ca7627a17e4c4070a3a16272b7a3dc7da3b9f3f6b7"
+      sha256: "65e29d831719be0591f7b3b1a32a3cda258ec98c58c7b25f7b84241bc31215bb"
       url: "https://pub.dev"
     source: hosted
-    version: "1.26.3"
+    version: "1.26.2"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      sha256: ab2726c1a94d3176a45960b6234466ec367179b87dd74f1611adb1f3b5fb9d55
+      sha256: "522f00f556e73044315fa4585ec3270f1808a4b186c936e612cab0b565ff1e00"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.7"
+    version: "0.7.6"
   test_core:
     dependency: transitive
     description:
       name: test_core
-      sha256: "0cc24b5ff94b38d2ae73e1eb43cc302b77964fbf67abad1e296025b78deb53d0"
+      sha256: "80bf5a02b60af04b09e14f6fe68b921aad119493e26e490deaca5993fef1b05a"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.12"
+    version: "0.6.11"
   tflite_flutter:
     dependency: "direct main"
     description:

walkguide-mobile/walkguide_app/pubspec.yaml

@@ -75,6 +75,7 @@ dependencies:
   cupertino_icons: ^1.0.8
   cached_network_image: ^3.3.1
   shimmer: ^3.0.0
+  intl: ^0.20.2
 
   # STOMP client untuk WebSocket
   stomp_dart_client: ^2.1.0

walkguide-mobile/walkguide_app/test/integration_test/app_flow_test.dart

@@ -1,5 +1,6 @@
-// integration_test/app_flow_test.dart
+// integration_test/app_flow_test.dart
-//
+// ignore_for_file: prefer_const_constructors, no_leading_underscores_for_local_identifiers
+//
 // Integration Tests (E2E) untuk WalkGuide App — 3 alur utama:
 //   Flow 1: Login → Dashboard → Logout
 //   Flow 2: Login → WalkGuide → Start → Stop → SOS

walkguide-mobile/walkguide_app/test/unit/obstacle_analyzer_test.dart

@@ -1,5 +1,6 @@
-// test/unit/obstacle_analyzer_test.dart
+// test/unit/obstacle_analyzer_test.dart
-//
+// ignore_for_file: prefer_const_declarations
+//
 // Unit test untuk ObstacleAnalyzer — logika AI direction & distance.
 // Jalankan: flutter test test/unit/obstacle_analyzer_test.dart
 //

walkguide-mobile/walkguide_app/test/unit/voice_command_handler_test.dart

@@ -51,14 +51,14 @@ class _FakeStt {
 // VoiceCommandHandler (mirror dari project)
 typedef CommandCallback = void Function(VoiceCommandKey key);
 
-class VoiceCommandHandler {
+class _VoiceCommandHandler {
   final _FakeStt _stt;
   final _FakeTts _tts;
 
   List<VoiceCommand> _commands = [];
   CommandCallback? onCommand;
 
-  VoiceCommandHandler(this._stt, this._tts);
+  _VoiceCommandHandler(this._stt, this._tts);
 
   void loadCommands(List<VoiceCommand> commands) {
     _commands = commands;
@@ -137,7 +137,7 @@ class VoiceCommandHandler {
 // ---------- Tests ----------
 
 void main() {
-  late VoiceCommandHandler handler;
+  late _VoiceCommandHandler handler;
   late _FakeStt fakeStt;
   late _FakeTts fakeTts;
 
@@ -146,7 +146,7 @@ void main() {
   setUp(() {
     fakeStt = _FakeStt();
     fakeTts = _FakeTts();
-    handler = VoiceCommandHandler(fakeStt, fakeTts);
+    handler = _VoiceCommandHandler(fakeStt, fakeTts);
     dispatchedCommands.clear();
     handler.loadDefaultCommands();
     handler.onCommand = dispatchedCommands.add;

walkguide-mobile/walkguide_app/test/widget/login_screen_test.dart

@@ -151,8 +151,6 @@ class _StubLoginScreenState extends State<_StubLoginScreen> {
 }
 
 // Workaround untuk SizedBox(height(12)) yang error — gunakan helper
-SizedBox _gap(double h) => SizedBox(height: h);
-
 // ---------------------------------------------------------------------------
 // Tests
 // ---------------------------------------------------------------------------
@@ -397,4 +395,4 @@ void main() {
       });
     });
   });
-}
+}

walkguide-mobile/walkguide_app/test/widget/manual_screen_test.dart

@@ -1,5 +1,6 @@
-// test/widget/manual_screen_test.dart
+// test/widget/manual_screen_test.dart
-//
+// ignore_for_file: prefer_const_constructors
+//
 // Widget tests untuk ManualScreen — halaman panduan perintah suara.
 // Jalankan: flutter test test/widget/manual_screen_test.dart
 

walkguide-mobile/walkguide_app/test/widget/notification_screen_test.dart

@@ -1,5 +1,6 @@
-// test/widget/notification_screen_test.dart
+// test/widget/notification_screen_test.dart
-//
+// ignore_for_file: prefer_const_constructors
+//
 // Widget tests untuk NotificationScreen — menampilkan notifikasi dari Guardian.
 // Jalankan: flutter test test/widget/notification_screen_test.dart
 

walkguide-mobile/walkguide_app/test/widget/sos_screen_test.dart

@@ -167,7 +167,7 @@ class _StubSosScreenState extends State<_StubSosScreen> {
                             shape: BoxShape.circle,
                             boxShadow: [
                               BoxShadow(
-                                color: Colors.red.withOpacity(0.4),
+                                color: Colors.red.withValues(alpha: 0.4),
                                 blurRadius: 20,
                                 spreadRadius: 4,
                               ),

walkguide-mobile/walkguide_app/test/widget/walk_guide_screen_test.dart

@@ -1,5 +1,6 @@
-// test/widget/walk_guide_screen_test.dart
+// test/widget/walk_guide_screen_test.dart
-//
+// ignore_for_file: prefer_const_constructors, prefer_const_literals_to_create_immutables
+//
 // Widget tests untuk WalkGuideScreen — layar utama navigasi tunanetra.
 // Jalankan: flutter test test/widget/walk_guide_screen_test.dart
 //
@@ -264,7 +265,7 @@ class _DetectionOverlay extends StatelessWidget {
       margin: const EdgeInsets.symmetric(horizontal: 16),
       padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
       decoration: BoxDecoration(
-        color: detection.isAlert ? Colors.red.withOpacity(0.85) : Colors.black87,
+        color: detection.isAlert ? Colors.red.withValues(alpha: 0.85) : Colors.black87,
         borderRadius: BorderRadius.circular(8),
       ),
       child: Text(
@@ -578,4 +579,4 @@ void main() {
       });
     });
   });
-}
+}