Refactor: Remove unused structs, redundant services, and streamline repository models

src-tauri/src/domains/guideline/service.rs

@@ -8,16 +8,6 @@ use crate::error::{AppError, AppResult};
 use crate::helpers::timestamp_in_seconds;
 use crate::shared::types::Lang;
 
-/// Represents the synced guideline data for a book.
-pub struct SyncedGuideLine {
-    pub last_update: i64,
-}
-
-/// Represents the synced AI guideline data for a book.
-pub struct SyncedAIGuideLine {
-    pub last_update: i64,
-}
-
 /// Represents the decrypted guideline properties for a book.
 #[derive(Serialize)]
 #[serde(rename_all = "camelCase")]