v0.3.0

Release Notes v0.3.0

Release Date: December 6, 2025

This release includes significant improvements to mobile experience, observability, code quality, and developer experience.

✨ New Features

Performance

• Prompt Caching (#34, #32): Reduced token usage with cached example responses and Bedrock prompt caching

Mobile Experience

• Mobile-Optimized Layout (#109, #110, #112): New mobile layout with chat panel at the bottom, proper viewport meta tags, and forced re-rendering when switching layouts.

UI/UX Enhancements

• Markdown Rendering & Resizable Chat Panel (#104)
• Draw.io Theme Toggle (#106): Switch between minimal and sketch themes
• Navigation Protection (#99): Confirmation dialog to prevent accidental back navigation
• Message Edit & Regenerate (#83)
• Save Diagrams Locally (#60)
• Copy Messages to Clipboard (#21) - Thanks @huminglong!

Configuration & Deployment

• Auto-Detect AI Provider (#74)
• DeepSeek Provider Support (#38)
• Custom Anthropic Base URL (#28) - Thanks @clevertension!
• OpenAI-Compatible LLM Support (#16) - Thanks @ylxmf2005!
• Access Code Protection (#77) - Thanks @Twelveeee!

Observability

• Langfuse Integration (#66, #69, #103): LLM observability with trace-level logging

🐛 Bug Fixes

• Button hover states (#111), markdown visibility (#108), clear button (#77)
• File clearing on examples (#82), memory leak in file preview (#118)
• Duplicate history entries (#64, #48), XML validation (#56)
• Bedrock 503 error handling (#92, #94), empty message content (#31)

🔧 Improvements

• Biome Integration (#116): Unified formatting and linting
• Next.js 16 Upgrade (#72)
• System Prompt Refactoring (#117)
• i18n About Pages (#46, #43)

📚 Documentation

• CONTRIBUTING.md (#119), AI provider guide (#100), Docker instructions (#62)

🏗️ Infrastructure

• Docker Support (#44) - Thanks @jianyun8023!
• Apache 2.0 License (#68), Google Analytics (#59)

👥 Contributors

• @broBinChen, @Twelveeee, @jianyun8023, @clevertension, @huminglong, @ylxmf2005

Full Changelog: v0.2.0...v0.3.0