* Fix MDX parsing error and add broken link CI check
Escape curly braces in docstring example that broke MDX parsing,
update card images, and add docs broken link check to CI.
* Revert CI broken link check — Mintlify runs this already
* Use code fence instead of inline backticks for MDX escaping
* chore: Update SDK documentation
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Co-authored-by: marvin-context-protocol[bot] <225465937+marvin-context-protocol[bot]@users.noreply.github.com>
* Reorganize docs navigation and add Apps documentation
Collapse Providers, Transforms, and Deployment under Servers. Add Apps
section with overview and low-level API pages. Add card images to welcome
page and README. Add NEW tags to recent features.
* Fix missing imports in Apps low-level API code examples
