fix: markdown rendering issue by skipping markdownify conversion

fix: resolve JSON parsing bug and optimize model fallback logic

feat: update README and agent brain logic for improved model routing and fallback strategies

feat: implement in-memory ZIP creation and enhance file management functionality

feat: enhance status tracking and logging in MVP generation process

feat: enhance MVP generation with advanced configuration options and improved query handling

Refactor code structure for improved readability and maintainability

add overview and testing plan files to MVP generation process

docs: enhance MVP generation by adding business model and testing plan markdown files

refactor: remove Mermaid diagram generation and validation utilities

fix: increase sleep duration in generate_mvp function for improved processing time; add Mermaid diagram validation and correction utilities

fix: enhance markdown sanitization and validation for Mermaid blocks in MVP generation

Add input validation and file management tools for MVP Agent