fix: 空渠道检测改用JSONObject.has + 移除gitignore误排除manifest

check_files.py

@@ -0,0 +1,17 @@
+import sys
+import io
+sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
+
+# Check screen2.png
+data = open(r"D:\Yuzu-GCA\screen2.png", 'rb').read()
+print(f"screen2.png: Size={len(data)}")
+print(f"First 20 bytes: {' '.join(f'{b:02X}' for b in data[:20])}")
+print(f"Is valid PNG: {data[:8] == b'\x89PNG\r\n\x1a\n'}")
+
+# Also check the fixed files
+for fname in ['screen_fixed.png', 'screen_fixed2.png']:
+    try:
+        d = open(r"D:\\Yuzu-GCA\\" + fname, 'rb').read()
+        print(f"\n{fname}: Size={len(d)}")
+    except:
+        print(f"\n{fname}: NOT FOUND")