// issue-0014: Feature request — {{{ CONTENT_HASH }}} template variable for wasm shell
//
// When targeting wasm, the compiler processes shell.html and substitutes
// {{{ SCRIPT }}} with the <script> tag. Add a {{{ CONTENT_HASH }}} variable
// that is a short hash (e.g. 8-char hex) of the final build outputs
// (.js + .wasm + .data), so the shell can use it for cache busting:
//
//   <script>
//   Module.locateFile=function(path){return path+'?v={{{ CONTENT_HASH }}}'};
//   </script>
//   <script async src="index.js?v={{{ CONTENT_HASH }}}"></script>
//
// This lets browsers cache until the next build, then bust automatically.
// No changes needed to build.sx or modules/compiler.sx — just the compiler
// recognizing the new placeholder during shell template substitution.