fix: GoalsViewModel use repo.loadDay instead of missing goals()

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ios/Platform/Platform/Features/Fitness/ViewModels/GoalsViewModel.swift

@@ -2,7 +2,7 @@ import Foundation
 
 @MainActor @Observable
 final class GoalsViewModel {
-    var goal: DailyGoal = .defaultGoal
+    var goal: DailyGoal = DailyGoal()
     var isLoading = true
     var errorMessage: String?
 
@@ -11,13 +11,11 @@ final class GoalsViewModel {
     func load() async {
         isLoading = true
         errorMessage = nil
-
-        do {
-            goal = try await repo.goals(for: Date().apiDateString, forceRefresh: true)
-        } catch {
-            errorMessage = error.localizedDescription
+        await repo.loadDay(date: Date().apiDateString)
+        goal = repo.goals
+        if let err = repo.error {
+            errorMessage = err
         }
-
         isLoading = false
     }
 }