hv1: early-exit at main (no plugin init); tokenizer: Stage-3 single-quote + full escapes (\/ \b \f \' \r fix); builder: route BinOp via SSOT emit_binop_to_dst; hv1 verify canary route (builder→Core); docs: phase-20.39 updates

src/runner/mod.rs

@@ -28,7 +28,7 @@ mod mir_json_v0;
 pub mod mir_json_emit;
 pub mod modes;
 mod pipe_io;
-mod core_executor;
+pub mod core_executor;
 mod pipeline;
 mod jit_direct;
 mod selfhost;