v0.8.0

What's New

• Async-safe pipeline state: Replaced threading.local() with contextvars.ContextVar for safe concurrent asyncio usage
• New context managers: GlacisTagScope and GlacisOperationContext with proper token-based cleanup
• Fixed get_evidence(): Now reads storage backend from glacis.yaml config instead of hardcoding SQLite
• Removed online attestation path
• Updated all provider integrations (OpenAI, Anthropic, Gemini, LiteLLM)

Breaking Changes

• GlacisCallContext renamed to GlacisTagScope (deprecated alias available for one release)
• online_attestation_demo and examples/online_openai.py removed