- Remove ChatWidget component from app.vue
- Update index.vue to ensure flex layout accommodates new design
- Add systemPrompt field to agentSessions table in the database
- Modify createSession and updateSession services to support systemPrompt
- Enhance API endpoints to accept and update systemPrompt
- Adjust chat engine to prioritize session-level systemPrompt over agent default
- Extend AgentSessionItem interface to include systemPrompt
- Revamp AgentSystemPromptModal to allow editing of systemPrompt
- Integrate editable system prompt functionality in AgentToolbar and chat page
- Add E2E tests for session-level system prompt functionality
- Update design document to reflect new system prompt capabilities
