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

benchmarks/bench_method_call_only_small.hako

@@ -0,0 +1,13 @@
+// Interpreter-level microbench: method call only (small loop for time-boxed runs)
+static box Main {
+  main() {
+    local i = 0
+    local s = new StringBox("nyash")
+    local total = 0
+    loop(i < 5000) { // 5e3 method calls per run (faster per-run)
+      total = total + s.length()
+      i = i + 1
+    }
+    return total
+  }
+}