selfhost(pyvm): MiniVmPrints – prefer JSON route early-return (ok==1) to avoid fallback loops; keep default behavior unchanged elsewhere

src/runner/mod.rs

@@ -22,9 +22,10 @@ mod demos;
 mod dispatch;
 mod json_v0_bridge;
 mod mir_json_emit;
-mod modes;
+pub mod modes;
 mod pipe_io;
 mod pipeline;
+mod jit_direct;
 mod selfhost;
 mod tasks;
 mod trace;