* feat: add MCP viewer and enhanced UI
- Add McpExecutionStatus type with discriminated union for execution states
- Implement McpExecution component with live status updates and collapsible output
- Replace inline MCP UI in ChatRow with dedicated McpExecution component
- Add comprehensive test coverage for useMcpToolTool
- Enhance CodeAccordian to support custom headers
- Improve combineCommandSequences to handle MCP execution flows
* refactor: merge loops in combineCommandSequences for better efficiency
- Reduced from 3 separate loops to 1 main processing loop
- Improved time complexity from O(n²) to O(n)
- Reduced total passes through array from 4 to 2
- Better memory access patterns and cache utilization
* feat: enhance JSON parsing and rendering in McpExecution component
* feat: add mock implementations for react-markdown and remark-gfm
* fix: remove unreachable return statement in ChatRowContent component
* feat(i18n): add execution status messages and error handling for invalid JSON arguments
* test: add parameter validation tests for missing server_name and tool_name
* Update McpExecution component to show server name in header and tool name in approval section
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Co-authored-by: Daniel Riccio <ricciodaniel98@gmail.com>
