bindgen: everything works

crates/brk_bindgen/src/backends/javascript.rs

@@ -92,8 +92,7 @@ impl LanguageSyntax for JavaScriptSyntax {
             // "ratio_{disc}_bps" → split on {disc} → _m(_m(acc, 'ratio'), disc) then _bps
             // But this is complex. For embedded disc, use string interpolation.
             // For suffix disc (ends with {disc}), use _m composition.
-            if template.ends_with("{disc}") {
-                let static_part = &template[..template.len() - "{disc}".len()];
+            if let Some(static_part) = template.strip_suffix("{disc}") {
                 if static_part.is_empty() {
                     format!("_m({}, disc)", var_name)
                 } else {

crates/brk_bindgen/src/backends/rust.rs

@@ -1,6 +1,6 @@
 //! Rust language syntax implementation.
 
-use crate::{GenericSyntax, LanguageSyntax, to_snake_case};
+use crate::{GenericSyntax, LanguageSyntax, escape_rust_keyword, to_snake_case};
 
 /// Rust-specific code generation syntax.
 pub struct RustSyntax;
@@ -15,7 +15,7 @@ fn escape_rust_format(template: &str) -> String {
 
 impl LanguageSyntax for RustSyntax {
     fn field_name(&self, name: &str) -> String {
-        to_snake_case(name)
+        escape_rust_keyword(&to_snake_case(name))
     }
 
     fn path_expr(&self, base_var: &str, suffix: &str) -> String {