fix: add errors='ignore' to subprocess encoding for Windows compatibility

[majiayu000]

Summary

• Add errors='ignore' parameter to subprocess.run() in get_current_app() function
• Fixes Windows GBK/UTF-8 encoding conflict when reading ADB output
• Add test to verify encoding parameters

Problem

On Windows systems, ADB output may contain mixed encoding characters that cause:

UnicodeDecodeError: 'gbk' codec can't decode byte 0xb4 in position 70: illegal multibyte sequence

Solution

Add errors='ignore' to the subprocess.run() call to gracefully handle encoding issues.

Fixes #241