wip(0.S1, 0.S2): state records, mut and read-only state parameters, entry injection, module var refused; ludic migrate state

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

selfhost/backend/emit_call.ludic

@@ -951,6 +951,7 @@ function emit_call(e: Node) -> Val {
     let rtname = `rt_{name}`
     fn2 = find_fn(rtname)
     if (fn2 == null) { perr(`unknown function {name}`) }
+    state_inject(e, fn2)                          # 0.S: a runtime built-in's states, supplied
     cname = rtname
   }
   vis_check(fn2, name)