feat: 在播放控制器中添加动画帧定时器逻辑，优化播放时间更新和自动暂停功能

src/components/PlaybackController.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { CaretRightOutlined, PauseOutlined } from '@ant-design/icons-vue';
-import { computed, ref, watch } from 'vue';
+import { computed, ref, watch, onUnmounted } from 'vue';
 
 import { useTimelineTicks } from '../hooks/useTimelineTicks';
 
@@ -35,14 +35,66 @@ const { ticks } = useTimelineTicks(viewStartTime, viewEndTime);
 watch(
   () => props.currentTime,
   (newValue) => {
-    internalCurrentTime.value = newValue;
+    // Only update from prop if not playing
+    if (!props.isPlaying) {
+      internalCurrentTime.value = newValue;
+    }
     const newHour = Math.floor(newValue / HOUR_IN_MS);
     if (newHour !== selectedHour.value) {
       selectedHour.value = newHour;
     }
   },
+  { immediate: true },
 );
 
+// --- Animation Frame Timer for Playback ---
+let animationFrameId: number | null = null;
+let lastTimestamp: number | null = null;
+
+const animationLoop = (timestamp: number) => {
+  if (!lastTimestamp) {
+    lastTimestamp = timestamp;
+  }
+  const deltaTime = timestamp - lastTimestamp;
+  lastTimestamp = timestamp;
+
+  // Ensure we don't jump too far ahead if the tab was inactive
+  const clampedDelta = Math.min(deltaTime, 1000); // Max 1-second jump
+
+  const newTime = internalCurrentTime.value + clampedDelta;
+
+  if (newTime < props.totalDuration) {
+    internalCurrentTime.value = newTime;
+    // No need to emit timeupdate as per user decision
+    // emit('timeupdate', newTime);
+    animationFrameId = requestAnimationFrame(animationLoop);
+  } else {
+    internalCurrentTime.value = props.totalDuration;
+    emit('pause'); // Auto-pause at the end
+  }
+};
+
+watch(
+  () => props.isPlaying,
+  (isPlaying) => {
+    if (isPlaying) {
+      lastTimestamp = null; // Reset timestamp on play
+      animationFrameId = requestAnimationFrame(animationLoop);
+    } else {
+      if (animationFrameId) {
+        cancelAnimationFrame(animationFrameId);
+        animationFrameId = null;
+      }
+    }
+  },
+);
+
+onUnmounted(() => {
+  if (animationFrameId) {
+    cancelAnimationFrame(animationFrameId);
+  }
+});
+
 // --- Computed properties for display and binding ---
 const formatTime = (ms: number): string => {
   if (isNaN(ms) || ms < 0) return '00:00:00';