[feat] Add client_id support to task queue system

- Add client_id field to QueueTaskItem and TaskHistoryItem models
- Implement client-specific WebSocket message routing
- Add client filtering to queue status and history endpoints
- Follow ComfyUI patterns for session management
- Create data_models package for better code organization

comfyui_manager/glob/utils/model_utils.py

@@ -0,0 +1,73 @@
+import os
+import logging
+import folder_paths
+
+from comfyui_manager.glob import manager_core as core
+
+
+def get_model_dir(data, show_log=False):
+    if "download_model_base" in folder_paths.folder_names_and_paths:
+        models_base = folder_paths.folder_names_and_paths["download_model_base"][0][0]
+    else:
+        models_base = folder_paths.models_dir
+
+    # NOTE: Validate to prevent path traversal.
+    if any(char in data["filename"] for char in {"/", "\\", ":"}):
+        return None
+
+    def resolve_custom_node(save_path):
+        save_path = save_path[13:]  # remove 'custom_nodes/'
+
+        # NOTE: Validate to prevent path traversal.
+        if save_path.startswith(os.path.sep) or ":" in save_path:
+            return None
+
+        repo_name = save_path.replace("\\", "/").split("/")[
+            0
+        ]  # get custom node repo name
+
+        # NOTE: The creation of files within the custom node path should be removed in the future.
+        repo_path = core.lookup_installed_custom_nodes_legacy(repo_name)
+        if repo_path is not None and repo_path[0]:
+            # Returns the retargeted path based on the actually installed repository
+            return os.path.join(os.path.dirname(repo_path[1]), save_path)
+        else:
+            return None
+
+    if data["save_path"] != "default":
+        if ".." in data["save_path"] or data["save_path"].startswith("/"):
+            if show_log:
+                logging.info(
+                    f"[WARN] '{data['save_path']}' is not allowed path. So it will be saved into 'models/etc'."
+                )
+            base_model = os.path.join(models_base, "etc")
+        else:
+            if data["save_path"].startswith("custom_nodes"):
+                base_model = resolve_custom_node(data["save_path"])
+                if base_model is None:
+                    if show_log:
+                        logging.info(
+                            f"[ComfyUI-Manager] The target custom node for model download is not installed: {data['save_path']}"
+                        )
+                    return None
+            else:
+                base_model = os.path.join(models_base, data["save_path"])
+    else:
+        model_dir_name = model_dir_name_map.get(data["type"].lower())
+        if model_dir_name is not None:
+            base_model = folder_paths.folder_names_and_paths[model_dir_name][0][0]
+        else:
+            base_model = os.path.join(models_base, "etc")
+
+    return base_model
+
+
+def get_model_path(data, show_log=False):
+    base_model = get_model_dir(data, show_log)
+    if base_model is None:
+        return None
+    else:
+        if data["filename"] == "<huggingface>":
+            return os.path.join(base_model, os.path.basename(data["url"]))
+        else:
+            return os.path.join(base_model, data["filename"])