feat: execute Bro-compatible integer range loops

source/diagnostics/diagnostics.hon

@@ -32,6 +32,11 @@ Code :: enum {
     invalid_assignment_target,
     break_outside_loop,
     continue_outside_loop,
+    invalid_range_bound,
+    invalid_for_iterable,
+    range_value_not_supported,
+    range_pointer_capture,
+    range_index_capture,
     missing_entry,
     invalid_entry,
     literal_out_of_range,
@@ -102,6 +107,11 @@ messages :: $enummap.init(Code, []u8, {
     invalid_assignment_target = "assignment requires a mutable local binding",
     break_outside_loop = "break requires an enclosing loop",
     continue_outside_loop = "continue requires an enclosing loop",
+    invalid_range_bound = "range bounds must have compatible integer types",
+    invalid_for_iterable = "for-loop iteration currently requires a direct integer range",
+    range_value_not_supported = "first-class range values are not implemented",
+    range_pointer_capture = "range loops do not support pointer captures",
+    range_index_capture = "range loops do not support index captures",
     missing_entry = "program requires a main function",
     invalid_entry = "main must be a function with no parameters",
     literal_out_of_range = "numeric literal is outside its runtime type's range",