The plan is complete. The background task confirmed all 69 tests pass (I already captured the same result in the foreground run).

Summary: The primary fix to _extract_text_from_json is already done from previous iterations. The remaining work is fixing accumulate_loop_tokens (line 516) which has the identical array-only JSON detection bug, plus adding a test for it. This is a 2-task, 2-file change with minimal risk.