fix: unify location report state

suixinkan/Features/Home/Services/HomeLocationStateStore.swift

@@ -8,6 +8,8 @@ import Foundation
 /// 首页在线状态与 2 小时倒计时存储，对齐 Android `LocationStateRepository`。
 final class HomeLocationStateStore {
 
+    static let shared = HomeLocationStateStore(store: .shared)
+
     static let onlineDurationMillis: Int64 = 2 * 60 * 60 * 1000
 
     private(set) var isOnline = false
@@ -15,11 +17,10 @@ final class HomeLocationStateStore {
     private(set) var nextReportCountdownSeconds: Int64 = 0
     private(set) var reminderMinutes = 0
 
-    var onStateChange: (() -> Void)?
-
     private let store: AppStore
     private var countdownTask: Task<Void, Never>?
     private var anchorTimestamp: Int64?
+    private var observers: [ObjectIdentifier: StateObserver] = [:]
 
     init(store: AppStore = .shared) {
         self.store = store
@@ -27,11 +28,38 @@ final class HomeLocationStateStore {
         isOnline = store.onlineStatus
     }
 
+    deinit {
+        countdownTask?.cancel()
+    }
+
+    /// 监听状态变化，允许首页与独立位置上报页同时刷新。
+    func observe(_ owner: AnyObject, handler: @escaping () -> Void) {
+        observers[ObjectIdentifier(owner)] = StateObserver(owner: owner, handler: handler)
+    }
+
+    /// 移除指定监听者。
+    func removeObserver(_ owner: AnyObject) {
+        observers.removeValue(forKey: ObjectIdentifier(owner))
+    }
+
     /// 启动时恢复在线倒计时。
     func restoreStateIfNeeded() {
-        guard store.onlineStatus else { return }
+        reminderMinutes = store.locationReminderMinutes
+        guard store.onlineStatus else {
+            isOnline = false
+            stopCountdown()
+            notifyChange()
+            return
+        }
         let lastTime = store.lastLocationReportTime
-        guard lastTime > 0 else { return }
+        guard lastTime > 0 else {
+            isOnline = false
+            store.onlineStatus = false
+            store.clearLastLocationReportTime()
+            stopCountdown()
+            notifyChange()
+            return
+        }
 
         let now = Int64(Date().timeIntervalSince1970 * 1000)
         let elapsed = now - lastTime
@@ -147,6 +175,17 @@ final class HomeLocationStateStore {
     }
 
     private func notifyChange() {
-        onStateChange?()
+        observers = observers.filter { $0.value.owner != nil }
+        observers.values.forEach { $0.handler() }
+    }
+}
+
+private final class StateObserver {
+    weak var owner: AnyObject?
+    let handler: () -> Void
+
+    init(owner: AnyObject, handler: @escaping () -> Void) {
+        self.owner = owner
+        self.handler = handler
     }
 }