改写战斗中替换group的逻辑

manager.py

@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+
+import json
+
+import webview
+
+
+class Api:
+    def __init__(self):
+        try:
+            with open("instances.json", "r", encoding="utf-8") as f:
+                self.instances = json.load(f)
+        except Exception:
+            self.instances = []
+            self.save()
+
+    def save(self):
+        with open("instances.json", "w", encoding="utf-8") as f:
+            json.dump(self.instances, f, ensure_ascii=False)
+
+    def get_instances(self):
+        return self.instances
+
+    def add(self, name, path):
+        self.instances.append({"name": name, "path": path})
+        self.save()
+
+    def remove(self, idx):
+        del self.instances[idx]
+        self.save()
+
+    def rename(self, idx, name):
+        self.instances[idx]["name"] = name
+        self.save()
+
+    def select_path(self, idx):
+        window = webview.active_window()
+        folder = window.create_file_dialog(dialog_type=webview.FOLDER_DIALOG)
+        if folder is None:
+            return None
+        if not isinstance(folder, str):
+            folder = folder[0]
+        self.instances[idx]["path"] = folder
+        self.save()
+        return folder
+
+    def start(self, idx):
+        import sys
+        from pathlib import Path
+        from subprocess import Popen
+
+        Popen(
+            [sys.executable, "webview_ui.py", self.instances[idx]["path"]],
+            cwd=Path(__file__).parent,
+        )
+
+
+def jump_to_index(window):
+    window.load_url("/manager/index.html")
+
+
+if __name__ == "__main__":
+    api = Api()
+    window = webview.create_window(
+        title="多开管理器",
+        url="ui/dist/index.html",
+        js_api=api,
+        min_size=(400, 500),
+        width=400,
+        height=500,
+    )
+    webview.start(jump_to_index, window, http_server=True)