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

read_png.py

@@ -0,0 +1,35 @@
+"""
+Read screen.png as UTF-16 LE text and save decoded text to file.
+"""
+import sys
+
+path = r"D:\Yuzu-GCA\screen.png"
+out_path = r"D:\Yuzu-GCA\screen_decoded.txt"
+
+# Read raw bytes
+with open(path, 'rb') as f:
+    raw = f.read()
+
+print(f"File size: {len(raw)} bytes")
+
+# Decode as UTF-16 LE (skip BOM)
+text = raw.decode('utf-16-le')
+print(f"Decoded text length: {len(text)} characters")
+
+# Write full decoded text to file
+with open(out_path, 'w', encoding='utf-8') as f:
+    f.write(text)
+print(f"Full decoded text written to: {out_path}")
+
+# Print first 3000 chars (replace non-printable)
+safe_text = text[:3000].encode('ascii', errors='replace').decode('ascii')
+print("\n=== First 3000 characters (non-ASCII replaced) ===")
+print(safe_text)
+
+# Search for specific keywords
+keywords = ['manifest', 'download', 'SHA256', 'verify', 'install', 'OTA', 'version', 'error', 'fail', 'success', 'pass', 'update', '下载', '校验', '安装', '版本']
+print("\n=== Keyword search ===")
+for kw in keywords:
+    count = text.count(kw)
+    if count > 0:
+        print(f"'{kw}' found {count} times")