feat: move core services to services directory

src/services/error.rs

@@ -0,0 +1,37 @@
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum CoreError {
+    #[error("Database error: {0}")]
+    Database(#[from] rusqlite::Error),
+
+    #[error("I/O error: {0}")]
+    Io(#[from] std::io::Error),
+
+    #[error("Item not found with id {0}")]
+    ItemNotFound(i64),
+
+    #[error("Item not found")]
+    ItemNotFoundGeneric,
+
+    #[error("Invalid input: {0}")]
+    InvalidInput(String),
+
+    #[error("Configuration error: {0}")]
+    Config(String),
+
+    #[error("Compression error: {0}")]
+    Compression(String),
+
+    #[error(transparent)]
+    Other(#[from] anyhow::Error),
+}
+
+impl From<rusqlite_migration::Error> for CoreError {
+    fn from(err: rusqlite_migration::Error) -> Self {
+        match err {
+            rusqlite_migration::Error::RusqliteError { err: e, .. } => CoreError::Database(e),
+            e => CoreError::Other(e.into()),
+        }
+    }
+}