docs: update documentation for IntelligentContext TOIN + CCR integration

Add image token compression with trained ML router

Add architecture diagrams to README and docs

Add IntelligentContextManager for semantic-aware context management

v0.2.2: Add CCR Response Handler, Context Tracker, and restructure docs

Add LLMLingua-2 opt-in support to proxy server

feat: Add CCR architecture, TOIN telemetry, and DevEx improvements

Prepare for OSS release v0.2.0