phase: 20.49 COMPLETE; 20.50 Flow+String minimal reps; 20.51 selfhost v0/v1 minimal (Option A/B); hv1-inline binop/unop/copy; docs + run_all + CURRENT_TASK -> 21.0

examples/console_demo.hako

@@ -0,0 +1,13 @@
+// ConsoleBox plugin demo
+
+static box Main {
+  main() {
+    local c
+    c = new ConsoleBox()
+    c.println("Hello from ConsoleBox!")
+    c.log("no newline...")
+    c.println(" done")
+    return 0
+  }
+}
+