Windows环境下Obsidian Git插件SSH认证失败问题求助

我已经查阅大量相关指南、教程及帖子，但仍未找到合适的解决方案。我在Windows电脑上配置Obsidian及其GitHub插件，已成功克隆GitHub私有仓库到本地，且通过Git Bash和PowerShell均可SSH访问该仓库，执行拉取、推送、合并等操作无异常。但启用Obsidian Git插件后，始终出现以下错误：

git obsidian error: git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

同时还会出现另一个报错：

plugin:obsidian-git:29119 Uncaught (in promise) Error: git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

    at Object.action (plugin:obsidian-git:29119:25)
    at PluginStore.exec (plugin:obsidian-git:29144:25)
    at eval (plugin:obsidian-git:26649:43)
    at new Promise (<anonymous>)
    at GitExecutorChain.handleTaskData (plugin:obsidian-git:26647:16)
    at GitExecutorChain.eval (plugin:obsidian-git:26631:44)
    at Generator.next (<anonymous>)
    at fulfilled (plugin:obsidian-git:25476:24)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

我清楚这是认证环节出现问题，但无法理解为何上述工具可正常访问仓库，插件却失败。我尝试过使用Git CLI缓存凭证、切换为HTTPS地址，但均无效，恳请各位提供解决方案。

内容的提问来源于stack exchange，提问作者SKiD