🚀 What's New

SSO Provider Logout

• Complete session termination at both application and OAuth provider level
• Automatic redirect to provider logout page (Google, GitHub, GitLab, custom providers)
• New environment variable ACKIFY_OAUTH_LOGOUT_URL for custom OAuth providers
• Users are now properly logged out from both the application and the SSO provider

🐛 Bug Fixes

Blockchain Chain Isolation

• Fixed critical issue where blockchain chains were mixing between different documents
• Each document now maintains its own independent blockchain with proper genesis signatures
• Added comprehensive tests to ensure multi-document blockchain integrity

🔧 Technical Changes

• Updated GetLastSignature method signature to include docID parameter
• All repository implementations updated to support document-scoped blockchain queries
• Enhanced OAuth logout flow with provider-level session termination