docs: move snake to top, add badges

docs: add contribution snake animation

docs: add bilingual README, CHANGELOG, and issue templates

fix: remove Chinese subtitle from package description

fix: sync plugin manifest version and correct author email

fix: lowercase session key to match OpenClaw internal normalization

feat: add context reset command and update README

fix: decrypt WeCom encrypted image data with encodingAESKey

feat: add image message support for mixed and image types

fix: align plugin id with npm package name to remove mismatch warning

fix: add required service id to registerService call

fix: rewrite as proper OpenClaw plugin to fix crash bugs

fix: 添加 openclaw.extensions 字段以支持插件安装

Fix: 单聊保留 @ 符号，群聊删除提及

Initial release v0.1.0-beta