SemanticBlockType

Classification of semantic block types.

Block types help compression algorithms make decisions about how to handle different conversation patterns:

• '''UserAssistantPair''': Complete conversation turn, can be summarized
• '''StandaloneAssistant''': Isolated response, preserve carefully
• '''StandaloneTool''': Tool output without context, may need special handling
• '''Other''': Unclassified, treat conservatively