restructure: move el compiler content into lang/

lang/tests/time/runner.el

@@ -0,0 +1,15 @@
+// runner.el — entry point for the time/ acceptance corpus.
+//
+// Unlike tests/html_sanitizer/runner.el (which iterates cases.json against
+// a single runtime function), each time/examples/*.el is its own El
+// program with its own fn main(). Compile, link, and run-output-diff is
+// handled by tests/time/run.sh — this file is the El-side stub kept for
+// pattern parity (every tests/<name>/ has both a runner.el and a run.sh).
+//
+// Run from the time/ directory:
+//   ./run.sh
+
+fn main() -> Void {
+    println("time/ acceptance corpus is driven by run.sh — invoke that directly.")
+    println("Each examples/*.el is a self-contained program; runner.el is a parity stub.")
+}