Add support for rendering local markdown images in mdv-gui#16

iiAtlas merged 2 commits intomainiiAtlas/mdv:mainfrom

claude/render-local-markdown-images-011CUMRSoZTicntqCQcXJE85iiAtlas/mdv:claude/render-local-markdown-images-011CUMRSoZTicntqCQcXJE85Copy head branch name to clipboard