feat: finalize AI analyzer, sync endpoints, and stabilize builds

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

@@ -47,7 +47,19 @@ abstract class AuthRepository {
 // File mock di-generate via: flutter pub run build_runner build
 // Untuk demo tanpa build_runner, kita buat manual mock di bawah
 
-class MockAuthRepository extends Mock implements AuthRepository {}
+class MockAuthRepository extends Mock implements AuthRepository {
+  @override
+  Future<Either<Failure, UserEntity>> login(String? email, String? password) =>
+      super.noSuchMethod(
+        Invocation.method(#login, [email, password]),
+        returnValue: Future<Either<Failure, UserEntity>>.value(
+          const Left(AuthFailure('Repository belum di-stub')),
+        ),
+        returnValueForMissingStub: Future<Either<Failure, UserEntity>>.value(
+          const Left(AuthFailure('Repository belum di-stub')),
+        ),
+      ) as Future<Either<Failure, UserEntity>>;
+}
 
 // ---------- Use case ----------
 

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

@@ -98,19 +98,20 @@ class ObstacleAnalyzer {
       };
 
   /// Pilih obstacle paling prioritas (Very Close > Close > Medium > Far).
-  DetectionResult? prioritize(List<DetectionResult> detections) {
-    if (detections.isEmpty) return null;
-    const order = [
-      'Very Close (< 1m)',
-      'Close (1-2m)',
-      'Medium (2-4m)',
-      'Far (> 4m)',
-    ];
-    detections.sort((a, b) => order
-        .indexOf(a.estimatedDistance)
-        .compareTo(order.indexOf(b.estimatedDistance)));
-    return detections.first;
-  }
+  DetectionResult? prioritize(List<DetectionResult> detections) {
+    if (detections.isEmpty) return null;
+    const order = [
+      'Very Close (< 1m)',
+      'Close (1-2m)',
+      'Medium (2-4m)',
+      'Far (> 4m)',
+    ];
+    final sorted = List<DetectionResult>.of(detections);
+    sorted.sort((a, b) => order
+        .indexOf(a.estimatedDistance)
+        .compareTo(order.indexOf(b.estimatedDistance)));
+    return sorted.first;
+  }
 
   /// Filter deteksi berdasarkan confidence threshold.
   List<DetectionResult> filterByConfidence(

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

@@ -48,7 +48,33 @@ abstract class RegisterRepository {
   });
 }
 
-class MockRegisterRepository extends Mock implements RegisterRepository {}
+class MockRegisterRepository extends Mock implements RegisterRepository {
+  @override
+  Future<Either<Failure, UserEntity>> register({
+    String? email,
+    String? password,
+    String? displayName,
+    String? role,
+  }) =>
+      super.noSuchMethod(
+        Invocation.method(
+          #register,
+          const [],
+          {
+            #email: email,
+            #password: password,
+            #displayName: displayName,
+            #role: role,
+          },
+        ),
+        returnValue: Future<Either<Failure, UserEntity>>.value(
+          const Left(ServerFailure('Repository belum di-stub')),
+        ),
+        returnValueForMissingStub: Future<Either<Failure, UserEntity>>.value(
+          const Left(ServerFailure('Repository belum di-stub')),
+        ),
+      ) as Future<Either<Failure, UserEntity>>;
+}
 
 // ---------- Use case ----------