fix: resolve compilation errors by adding missing imports and fixing type mismatches

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/modes/update.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use anyhow::{anyhow, Result};
 use std::path::PathBuf;
 use std::str::FromStr;
 
@@ -100,7 +100,7 @@ pub fn mode_update(
             debug!("DIGEST: {}", digest_value);
 
             // Save digest to meta using the common function
-            store_item_digest_value(&tx, item.clone(), digest_type, digest_value)?;
+            store_item_digest_value(&mut tx.into_inner(), item.clone(), digest_type, digest_value)?;
         } else {
             debug!(
                 "MAIN: Unable to update digest of item due to missing file {:?}",