add changelog

CHANGELOG.md

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+# Changelog
+
+## 0.0.53
+
+### Added
+- Resource-oriented design for models, shields, memory banks, datasets and eval tasks
+- Persistence for registered objects with distribution
+- Ability to persist memory banks created for FAISS
+- PostgreSQL KVStore implementation
+- Environment variable placeholder support in run.yaml files
+- Provider deprecation support
+- Comprehensive Zero-to-Hero notebooks and quickstart guides
+- Colab notebook integration for Llama Stack lesson
+- Remote::vllm provider with vision model support
+- Support for quantized models in Ollama
+- Vision models support for Together, Fireworks, Meta-Reference, and Ollama
+- Bedrock distribution with safety shields support
+
+### Changed
+- Split safety into distinct providers (llama-guard, prompt-guard, code-scanner)
+- Improved distribution registry with SQLite default storage
+- Enhanced test infrastructure with composable fixtures
+- Changed provider naming convention (`impls` → `inline`, `adapters` → `remote`)
+- Updated API signatures for dataset and eval task registration
+- Restructured folder organization for providers
+- Enhanced Docker build configuration
+- Added version prefixing for REST API routes
+
+### Removed
+- `llama stack configure` command
+
+### Fixed
+- Agent system instructions persistence after first turn
+- PostgreSQL config validation
+- vLLM adapter chat completion signature
+- Routing table lookup key for memory banks
+- Together inference validator
+- Exception handling for SSE connection closure
+
+### Development
+- Added new test migration system
+- Enhanced test setup with configurable model selection
+- Added support for remote providers in tests
+- Improved pre-commit hooks configuration
+- Updated OpenAPI generator and specifications