fix: config_manager 读取 config.json 时自动检测编码#226
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69gg merged 2 commits intoRTGS2017:mainfrom Feb 19, 2026
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_load_config_file 硬编码 utf-8 导致 UTF-16 LE BOM 文件读取失败， update_config 静默返回 False，API key 及所有配置变更无法持久化。 改用 detect_file_encoding（与 load_config 保持一致）。 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
PyInstaller 打包后 __file__ 指向 sys._MEIPASS（只读）， 导致 _save_config_file 写入失败，配置永远无法持久化。 - 新增 IS_PACKAGED / get_config_path()：打包时用 sys.executable 同级目录 - bootstrap_config_from_example：打包时从 sys._MEIPASS 读取模板 - config_manager 所有路径改用 get_config_path() Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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问题
_load_config_file硬编码encoding='utf-8'，当config.json为 UTF-16 LE BOM 编码时（旧版安装或打包版），读取抛UnicodeDecodeError，被except吞掉返回None，导致update_config静默返回False。表现：前端填写的 API key 传到后端后不生效（LLM 仍使用占位符
sk-placeholder-key-not-set），且配置变更重启后失效。修复
改用
detect_file_encoding（charset_normalizer自动检测），与system/config.py的load_config保持一致。变更
system/config_manager.py：_load_config_file改用detect_file_encoding替代硬编码utf-8。