Proxy: ADT REST write+activate fallback when EPOD does not activate a second PROG/FUNC write

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014aUaQeLnwbb1zTpN7kHeat

harness/runner.py

@@ -207,6 +207,8 @@ class Runner:
                 rep["agent_seconds"] = round(time.time() - t1, 1)
                 rep["tool_calls"], rep["activations"] = proxy.calls, proxy.activations
                 rep["max_fail_streak"] = proxy.max_fail_streak
+                if proxy.fallbacks:
+                    rep["adt_fallbacks"] = proxy.fallbacks
 
             # 3 collect
             hidden_names = {o["name"].upper() for o in task.objects("hidden_tests")}