v0.1.0-preview.3

Added

• Added the new Proteos.Encryption.GoogleCloudKms package.
• Support for Google Cloud KMS using symmetric ENCRYPT_DECRYPT keys.
• Application Default Credentials (ADC) support.
• Optional credentials file / JSON credentials configuration.
• CRC32C integrity verification for requests and responses.
• Full unit test coverage without live GCP calls.

Changed

• Version updated to 0.1.0-preview.3.
• Documentation updated for Google Cloud KMS support.

Compatibility

• No changes to the envelope format.
• No breaking changes to existing APIs.
• Azure Key Vault and AWS KMS providers remain unchanged.