add font settings (but font family doesn't work)

src/stores/settingsStore.ts

@@ -0,0 +1,27 @@
+import { defineStore } from 'pinia';
+import { ref, watch } from 'vue';
+
+export const useSettingsStore = defineStore('settings', () => {
+  // Initialize from localStorage or defaults
+  const editorFontSize = ref<number>(
+    Number(localStorage.getItem('editorFontSize')) || 14
+  );
+  
+  const editorFontFamily = ref<string>(
+    localStorage.getItem('editorFontFamily') || 'Fira Code, Consolas, monospace'
+  );
+
+  // Watchers for persistence
+  watch(editorFontSize, (val) => {
+    localStorage.setItem('editorFontSize', val.toString());
+  });
+
+  watch(editorFontFamily, (val) => {
+    localStorage.setItem('editorFontFamily', val);
+  });
+
+  return {
+    editorFontSize,
+    editorFontFamily,
+  };
+});