Remove ARCHITECTURE.md from version control and update .gitignore to exclude it

Update MCP server port to 8000 in run.py and README.md; add .vscode/ to .gitignore

Refactor TutorX MCP server to remove legacy client and utility modules, update app.py for SSE integration, and enhance .gitignore to exclude .cursor directory. Clean up main.py for improved server configuration and streamline run script for better usability.

switch mcp server stdio to sse.

Step 1: Initial TutorX MCP server setup with basic core features