refactor: 重构后端结构并迁移前端到 Vue3

app/state.py

@@ -0,0 +1,25 @@
+from typing import Any
+
+from app.config import AppConfig
+from app.history import HistoryManager
+
+
+config = AppConfig.load()
+history_manager = HistoryManager()
+processing_tasks: dict[str, dict[str, Any]] = {}
+upload_sessions: dict[str, dict[str, Any]] = {}
+
+global_task_lock: dict[str, Any] = {
+    "locked": False,
+    "task_id": None,
+    "stage": None,
+    "started_at": None,
+}
+
+
+def reset_task_lock() -> None:
+    global_task_lock["locked"] = False
+    global_task_lock["task_id"] = None
+    global_task_lock["stage"] = None
+    global_task_lock["started_at"] = None
+