Add saturation max slider to UI and image processing logic

tests/test_image_processor.py

@@ -12,18 +12,18 @@ def test_stats_summary():
         matches_excl=10, total_excl=20
     )
     
-    # Mock translator
     def mock_t(key, **kwargs):
         if key == "stats.placeholder":
             return "Placeholder"
-        return f"{kwargs['with_pct']:.1f} {kwargs['without_pct']:.1f} {kwargs['excluded_pct']:.1f} {kwargs['excluded_match_pct']:.1f}"
+        if not kwargs:
+            return key
+        return f"{kwargs['with_pct']:.1f} {kwargs['without_pct']:.1f} {kwargs['excluded_pct']:.1f}"
 
     res = s.summary(mock_t)
     # with_pct: 40/80 = 50.0
     # without_pct: 50/100 = 50.0
     # excluded_pct: 20/100 = 20.0
-    # excluded_match_pct: 10/20 = 50.0
-    assert res == "50.0 50.0 20.0 50.0"
+    assert res == "50.0 50.0 20.0"
 
 def test_stats_empty():
     s = Stats()