Fix AEON results column naming for multiple slides

When running multiple slides, rename the 'Confidence' column to the slide
name before concatenation. This ensures each slide has a uniquely named
column in the combined results table instead of duplicate 'Confidence'
column names.

src/mosaic/ui/app.py

@@ -137,6 +137,8 @@ def analyze_slides(
             if slide_mask is not None:
                 all_slide_masks.append((slide_mask, slide_name))
             if aeon_results is not None:
+                # Rename "Confidence" column to slide name for proper concatenation
+                aeon_results = aeon_results.rename(columns={"Confidence": slide_name})
                 all_aeon_results.append(aeon_results)
             if paladin_results is not None:
                 paladin_results.insert(