Closed loop test suite, vibe coded, needs some refinement.

config.yaml

@@ -0,0 +1,17 @@
+# Hardware Test Configuration
+
+audio:
+  sample_rate: 44100
+  channels: 2
+  device_name: "Scarlett"  # Will auto-detect Focusrite Scarlett
+  
+test_tones:
+  frequencies: [100, 250, 500, 1000, 2000, 4000, 8000]  # Hz
+  duration: 5.0  # seconds per frequency
+  amplitude: 0.5  # 0.0 to 1.0
+  latency_runs: 5  # Number of latency measurements to average
+
+output:
+  results_dir: "test_results"
+  save_plots: true
+  save_raw_audio: false