BREAKING CHANGE(core): replace the TypeScript database engine with a Rust-backed embedded server and bridge

rust/crates/rustdb-query/src/error.rs

@@ -0,0 +1,18 @@
+/// Errors from query operations.
+#[derive(Debug, thiserror::Error)]
+pub enum QueryError {
+    #[error("Invalid query operator: {0}")]
+    InvalidOperator(String),
+
+    #[error("Type mismatch: {0}")]
+    TypeMismatch(String),
+
+    #[error("Invalid update: {0}")]
+    InvalidUpdate(String),
+
+    #[error("Aggregation error: {0}")]
+    AggregationError(String),
+
+    #[error("Invalid regex: {0}")]
+    InvalidRegex(String),
+}