feat: implement config inheritance via 'extends' and place lightweight floor configs in configs/floor_config/

README.md

@@ -24,10 +24,11 @@ visual.
 
 ```text
 configs/
-  K1-L1.yaml .. K5-L2.yaml       ← Standard floor configurations (K1-L1 to K5-L2)
+  floor_config/                  ← Lightweight floor configs (K1-L1 to K5-L2)
+    K1-L1.yaml .. K5-L2.yaml     ← Extends cycle7_batch_optimized.yaml
   cameras/example_camera.yaml
   cycle7_batch.yaml
-  cycle7_batch_optimized.yaml
+  cycle7_batch_optimized.yaml    ← Base batch processing config
   mortality_config.yaml
   trackers/botsort_chicken.yaml
 src/chicken_counter/