v0.2.1

✨ Feature

• Added SQLite single-node deployment support, including the SQLite database driver, sqlite-vec vector search, in-memory cache backend, configuration templates, and Docker Compose files.
• Added PWA support with Web App Manifest, app icons, Service Worker registration, and static asset caching.
• Added OpenRouter Responses support for upstream protocols, model routing, and model option policies via openrouter_responses.
• Added incremental loading for long conversation histories: recent messages load first, and older messages load automatically when scrolling upward.
• Added Redis username configuration for deployments that use Redis ACL authentication.
• Added APIs for binding upstream model sources and updating message content.

⚡ Optimization

• Improved SQLite and PostgreSQL compatibility for billing queries, model source statistics, and vector search.
• Improved Embedding / RAG validation by checking service configuration and vector store availability before enabling vector features.
• Improved chat branch reconciliation so visible message paths recover more reliably after loading older history.
• Improved Markdown rendering for HTML visual content and Mermaid code blocks.
• Improved deployment configuration with separate full and SQLite profiles, plus persistent /app/data storage.
• Improved responsive layout details in the chat composer, model picker, admin buttons, and login page.

🐛 Fixed

• Fixed OpenRouter Responses compatibility for message history, tool calls, and tool outputs.
• Fixed numeric enum matching for MCP tool arguments.
• Fixed onboarding flow returning to the password step when a bootstrap password is reused.
• Fixed recovery code copying in browsers where Clipboard API is unavailable.
• Fixed clipped long model names in the model picker.
• Fixed clearing a model icon so it can fall back to the automatic icon.
• Fixed Monaco JSON editor overview ruler display.
• Fixed clipped login/register switch text.
• Fixed conversation titles named “New Chat” not being auto-replaced.