fix: verified examples - leather cut (precise bbox) + candle counting (4 perfect bboxes)

app.py

@@ -262,18 +262,18 @@ EXAMPLES = [
         "The first image is a normal sample. Please locate the defects within the second image with bounding box in JSON format.",
         256,
     ],
-    # 4. Defect Localization — PCB missing part
+    # 4. Defect Localization — leather cut
     [
-        "examples/pcb_good.jpg",
-        "examples/pcb_defect.jpg",
+        "examples/leather_good.jpg",
+        "examples/leather_cut.jpg",
         "The first image is a normal sample. Please locate the defects within the second image with bounding box in JSON format.",
         256,
     ],
-    # 5. Object Counting + Detection (single image) — screw bag
+    # 5. Object Counting (single image) — candle
     [
         None,
-        "examples/screw_bag_count.jpg",
-        "Please locate every screw and nut in this image with separate bounding boxes. Output as JSON list.",
+        "examples/candle_count.jpg",
+        "How many candles are in this image? For each candle, give its bounding box as {\"bbox_2d\": [x1,y1,x2,y2], \"label\": \"candle_N\"}.",
         512,
     ],
     # 7. Industrial OCR (single image) — drink bottle