Modal Runtime Roundup: VM Sandboxes, Modal Clusters, and More

Modal announced VM Sandboxes, giving agents a full Linux computer for Docker stacks, local databases, and mobile simulators, already used by Linear, Legora, and Snorkel. Modal Clusters are now generally available via the @modal.clustered decorator, supporting trillion-parameter training and serving across coordinated containers. Sticky Sessions and Endpoint Candidates were also introduced, with the latter in private beta.