Allow notifications to be sent days ahead of time

src/schema.rs

@@ -1,14 +1,15 @@
 // @generated automatically by Diesel CLI.
 
 diesel::table! {
-    chat (id) {
-        id -> Integer,
-        telegram_id -> BigInt,
-        calendar -> Text,
-        next_appointment_start -> Nullable<BigInt>,
-        next_appointment_end -> Nullable<BigInt>,
-        last_reminder -> Nullable<BigInt>,
-        pinned_message_id -> Nullable<Integer>,
-        locale -> Nullable<Text>,
-    }
+	chat (id) {
+		id -> Integer,
+		telegram_id -> BigInt,
+		calendar -> Text,
+		next_appointment_start -> Nullable<BigInt>,
+		next_appointment_end -> Nullable<BigInt>,
+		last_reminder -> Nullable<BigInt>,
+		pinned_message_id -> Nullable<Integer>,
+		locale -> Nullable<Text>,
+		remind_days_ahead -> BigInt,
+	}
 }