- New module: mci-channel-wechat-personal - Implements ChannelAdapter SPI for personal WeChat - Calls Python channel-service pywechat HTTP APIs: - /v1/wechat-personal/login/start for initAccount QR code - /v1/wechat-personal/send/text and /send/image for sendMessage - Configurable base URL via sino.channel.wechat-personal.base-url - Added MockWebServer unit tests - Wired module into backend parent and mci-server