fix(client): use package import for markdown image helpers - #9010

💭 I'm noticing the diff swaps a relative import for a package subpath, @t3tools/client-runtime/markdown-images. I should verify this subpath is actually exposed in the package's exports map and matches the real file name before assuming it resolves correctly.

1. browse_code — packages/client-runtime/**/package.json

2. browse_code — packages/client-runtime/src/*.ts

3. git_tools — markdown-images

💭 This is just an import path change, nothing that violates Effect service conventions, and it looks consistent with the rest of the codebase. Since there's nothing to flag, I need to reconcile "All clear" with the required JSON schema format—I'll put that message in the title or summary field while figuring out how the default failure state should be interpreted when the check is actually clean.