fix: correct destructuring of RusqliteError variant

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

src/core/error.rs

@@ -30,7 +30,7 @@ pub enum CoreError {
 impl From<rusqlite_migration::Error> for CoreError {
     fn from(err: rusqlite_migration::Error) -> Self {
         match err {
-            rusqlite_migration::Error::RusqliteError(e) => CoreError::Database(e),
+            rusqlite_migration::Error::RusqliteError { err: e, .. } => CoreError::Database(e),
             e => CoreError::Other(e.into()),
         }
     }