♻️ Refactor watchOS content view

ios/WatchRunner Watch App/ViewModels/ComposePostViewModel.swift

@@ -0,0 +1,35 @@
+//
+//  ComposePostViewModel.swift
+//  WatchRunner Watch App
+//
+//  Created by LittleSheep on 2025/10/29.
+//
+
+import Foundation
+import Combine
+
+@MainActor
+class ComposePostViewModel: ObservableObject {
+    @Published var title = ""
+    @Published var content = ""
+    @Published var isPosting = false
+    @Published var errorMessage: String?
+    @Published var didPost = false
+
+    private let networkService = NetworkService()
+
+    func createPost(token: String, serverUrl: String) async {
+        guard !isPosting else { return }
+        isPosting = true
+        errorMessage = nil
+
+        do {
+            try await networkService.createPost(title: title, content: content, token: token, serverUrl: serverUrl)
+            didPost = true
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+
+        isPosting = false
+    }
+}