feat: Add Rhai scripting support

- Add new `sal-rhai` crate for Rhai scripting integration
- Integrate Rhai with existing SAL modules
- Improve error handling for Rhai scripts and SAL functions
- Add comprehensive unit and integration tests for `sal-rhai`

text/src/lib.rs

@@ -27,7 +27,7 @@
 //!
 //! let unsafe_name = "User's File [Draft].txt";
 //! let safe_name = name_fix(unsafe_name);
-//! assert_eq!(safe_name, "users_file_draft_.txt");
+//! assert_eq!(safe_name, "user_s_file_draft_.txt");
 //! ```
 //!
 //! ## Text Replacement

text/src/rhai.rs

@@ -21,6 +21,7 @@ pub fn register_text_module(engine: &mut Engine) -> Result<(), Box<EvalAltResult
 
     // Register TextReplacer constructor
     engine.register_fn("text_replacer_new", text_replacer_new);
+    engine.register_fn("text_replacer_builder", text_replacer_new); // Alias for backward compatibility
 
     // Register TextReplacerBuilder instance methods
     engine.register_fn("pattern", pattern);