- Added CLI options to set requiredPulumiVersion in Pulumi.yaml, use private packages as local dependencies, introduced `pulumi policy install` command, and parallelized analyzer and policy pack downloads.
- Enhanced SDKs: .NET codegen now respects RequirePulumiVersion; Python SDK gains OnError resource hook, protobuf support, and multiple bug fixes (convert arguments, dynamic Resource subclass handling, panic fix).
- Fixed package installation ordering, improved plugin/package handling, and relaxed pip version constraint for Python.