feat: implement core services and refactor modes

Co-authored-by: aider (openai/andrew/openrouter/google/gemini-2.5-pro) <aider@aider.chat>

src/modes/delete.rs

@@ -1,12 +1,11 @@
-use anyhow::{Context, Result, anyhow};
-use std::fs;
+use anyhow::{anyhow, Result};
 use std::path::PathBuf;
 
-use crate::db;
 use crate::config;
-use clap::Command;
+use crate::core::item_service::ItemService;
 use clap::error::ErrorKind;
-use log::{debug, warn};
+use clap::Command;
+use log::warn;
 use rusqlite::Connection;
 
 pub fn mode_delete(
@@ -32,23 +31,17 @@ pub fn mode_delete(
         .exit();
     }
 
+    let item_service = ItemService::new(data_path);
+
     for item_id in ids.iter() {
-        if let Some(item) = db::get_item(conn, *item_id)? {
-            debug!("MAIN: Found item {:?}", item);
-            db::delete_item(conn, item)?;
-
-            // Validate that item ID is positive to prevent path traversal issues
-            if *item_id <= 0 {
-                return Err(anyhow!("Invalid item ID: {}", item_id));
-            }
-            
-            let mut item_path = data_path.clone();
-            item_path.push(item_id.to_string());
-
-            fs::remove_file(&item_path)
-                .context(anyhow!("Unable to remove item file {:?}", item_path))?;
-        } else {
-            warn!("Unable to find item {item_id} in database");
+        match item_service.delete_item(conn, *item_id) {
+            Ok(_) => {}
+            Err(e) => match e {
+                crate::core::error::CoreError::ItemNotFound(_) => {
+                    warn!("Unable to find item {item_id} in database");
+                }
+                _ => return Err(anyhow!(e).context(format!("Failed to delete item {}", item_id))),
+            },
         }
     }