- Introduced `terraform stacks` CLI for stack operations and added GA `terraform rpcapi` for internal RPC usage.
- Expanded `terraform test` with parallel teardown, in‑file external variable definitions, and file‑level variable blocks that can reference run outputs.
- Fixed numerous bugs: ignored cloud block warnings, workspace name validation, state identity loss, and improved type‑checking messages and performance for high‑cardinality resources.
Community impact
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