basic Lua 5.4 implementation with few example commands

crates/jarvis-core/src/lua/structs.rs

@@ -0,0 +1,30 @@
+use std::path::PathBuf;
+
+// Context passed to Lua scripts
+#[derive(Debug, Clone)]
+pub struct CommandContext {
+    // The phrase that triggered the command
+    pub phrase: String,
+    
+    // Command ID
+    pub command_id: String,
+
+    // Path to command folder
+    pub command_path: PathBuf,
+
+    // Current language
+    pub language: String,
+}
+
+// Result returned from Lua script execution
+#[derive(Debug, Clone)]
+pub struct CommandResult {
+    // Whether to continue chaining commands
+    pub chain: bool,
+}
+
+impl Default for CommandResult {
+    fn default() -> Self {
+        Self { chain: true }
+    }
+}