refactor: remove old unused module

src/app/gui/config_store.py

@@ -1,37 +0,0 @@
-from __future__ import annotations
-
-import json
-from dataclasses import dataclass
-from pathlib import Path
-from typing import Any, Dict
-
-
-@dataclass(frozen=True)
-class AppConfig:
-    data: Dict[str, Any]
-    path: Path
-
-
-def load_config(path: Path) -> AppConfig:
-    raw = json.loads(path.read_text(encoding="utf-8"))
-    if not isinstance(raw, dict):
-        raise ValueError("config root must be a JSON object")
-    return AppConfig(data=raw, path=path)
-
-
-def save_config(path: Path, data: Dict[str, Any]) -> None:
-    path.parent.mkdir(parents=True, exist_ok=True)
-    payload = json.dumps(data, indent=2, ensure_ascii=False) + "\n"
-    path.write_text(payload, encoding="utf-8")
-
-
-def normalize_config(data: Dict[str, Any]) -> Dict[str, Any]:
-    """
-    Ensure basic expected shape for config dict.
-    Keeps unknown keys intact.
-    """
-    out = dict(data)
-    pls = out.get("playlists")
-    if not isinstance(pls, list):
-        out["playlists"] = []
-    return out