wasm shell + destructuring

src/core.zig

@@ -118,6 +118,12 @@ pub const Compilation = struct {
         return null;
     }
 
+    /// Get custom WASM shell template path set from #run build blocks, if any.
+    pub fn getBuildWasmShell(self: *Compilation) ?[]const u8 {
+        if (self.ir_emitter) |*e| return e.build_config.wasm_shell_path;
+        return null;
+    }
+
     /// Collect C import source info from the resolved AST.
     pub fn collectCImportSources(self: *Compilation) ![]c_import.CImportInfo {
         const root = self.resolved_root orelse self.root orelse return &.{};