Refine schedule/todo UI and integrate Google Photos API

backend/models/GoogleConfig.js

@@ -0,0 +1,18 @@
+const mongoose = require("mongoose");
+
+const googleConfigSchema = new mongoose.Schema(
+    {
+        key: { type: String, required: true, unique: true }, // e.g., 'photos_auth'
+        tokens: {
+            access_token: String,
+            refresh_token: String,
+            scope: String,
+            token_type: String,
+            expiry_date: Number,
+        },
+        albumId: { type: String }, // Optional: to filter by a specific album
+    },
+    { timestamps: true }
+);
+
+module.exports = mongoose.model("GoogleConfig", googleConfigSchema);