fix: 修复某些边缘情况的图表显示异常 (#592)

crates/bili_sync/src/api/response.rs

@@ -184,6 +184,7 @@ pub struct DashBoardResponse {
 
 #[derive(Serialize, Clone, Copy)]
 pub struct SysInfo {
+    pub timestamp: i64,
     pub total_memory: u64,
     pub used_memory: u64,
     pub process_memory: u64,

crates/bili_sync/src/api/routes/ws/mod.rs

@@ -262,6 +262,7 @@ impl WebSocketHandler {
                             (available, total)
                         });
                     let sys_info = SysInfo {
+                        timestamp: chrono::Utc::now().timestamp_millis(),
                         total_memory: system.total_memory(),
                         used_memory: system.used_memory(),
                         process_memory: process.memory(),