praxis-observability 0.2.0

Observability and tracing abstraction for Praxis AI agents
Documentation 
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pub mod observer;
pub mod types;

#[cfg(feature = "langfuse")]
pub mod langfuse;

// Re-export main types
pub use observer::Observer;
pub use types::{
    NodeObservation, NodeObservationData, NodeOutput, LangfuseMessage, TraceContext, 
    ToolCallInfo, ToolResultInfo,
};

// Re-export TokenUsage from praxis-llm to avoid duplication
pub use praxis_llm::TokenUsage;

#[cfg(feature = "langfuse")]
pub use langfuse::observer::LangfuseObserver;