fix: module syntax — changed src_bux/*.bux from module X; to module X { ... }

src_bux/manifest.bux

@@ -1,6 +1,6 @@
 // manifest.bux — Manifest parser for bux.toml files
 // Parses package metadata: name, version, type, build output.
-module Manifest;
+module Manifest {
 
 // ---------------------------------------------------------------------------
 // Manifest struct
@@ -82,4 +82,4 @@ func Manifest_Parse(content: String) -> Manifest {
 func Manifest_Load(path: String) -> Manifest {
     let content: String = ReadFile(path);
     return Manifest_Parse(content);
-}
+}