docs update

Add IntelligentContextManager for semantic-aware context management

Add feature coverage and known limitations to Agno docs

Add Agno integration documentation

Add universal compression module with ML-based content detection

Add persistent memory system with zero-latency inline extraction

Add seamless LangChain integration

Add AST-based code compression and custom model configuration

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

Add LLMLingua-2 opt-in support to proxy server

Fix all mypy type errors and flaky embedding test

Fix all ruff lint and format errors for CI

Publish headroom-ai v0.2.0 to PyPI with DevEx fixes

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

Prepare for OSS release v0.2.0