Merged from feature/interrupt-on-type branch.
Backend cancellation infrastructure:
- Added tokio watch channel to SessionState for cancellation signaling
- Implemented cancel_chat command
- Modified chat command to use tokio::select! for racing requests vs cancellation
- When cancelled, HTTP request to Ollama is dropped and returns early
- Added tokio dependency with sync feature
Story updates:
- Story 13: Updated to use Stop button pattern (industry standard)
- Story 18: Created placeholder for streaming responses
- Stories 15-17: Placeholders for future features
Frontend changes:
- Removed auto-interrupt on typing behavior (too confusing)
- Backend infrastructure ready for Stop button implementation
Note: Story 13 UI (Stop button) not yet implemented - backend ready
Implemented Story 11: Text Alignment and Syntax Highlighting
- Removed center-alignment from chat container (text-align: center)
- Added left-alignment to markdown body and code blocks
- Integrated react-syntax-highlighter with react-markdown
- Added syntax highlighting for code blocks using oneDark theme
- Supports JavaScript, TypeScript, Rust, Python, JSON, Markdown, Shell, and more
- Inline code maintains simple styling without full highlighting
- All code blocks are now left-aligned for better readability
Fixed: Agent over-aggressive file writing behavior
- Refined system prompt to distinguish between:
* 'show/example/how does' → respond with code in chat
* 'create/add/implement/fix' → use write_file tool
- Removed aggressive AGENT DIRECTIVE prefix from user messages
- Softened reminder message to reflect nuanced behavior
- Agent can now both teach (show examples) and implement (write files)
Updated Specs
- Added Text Alignment and Readability section to UI_UX.md
- Added Syntax Highlighting section with implementation details
- Updated SDSW workflow: acceptance criteria marked complete only after user acceptance
Dependencies
- Added react-syntax-highlighter and @types/react-syntax-highlighter
