Update README and app.py: removed expense tracking references from the financial advisory agent description and example prompts for clarity and focus on budgeting and investment recommendations.

Refactor portfolio analyzer in FinancialTools: simplified input extraction and handling, improved default portfolio logic, and enhanced analysis output with basic recommendations for diversification.

Fix Markdown syntax in Gradio interface: updated `gr.markdown` to `gr.Markdown` for proper rendering of the financial advisory agent's title and logo.

Refactor portfolio data extraction in FinancialAgent: enhanced support for JSON-like structures and simplified symbol parsing for holdings, ensuring more robust input handling.

Refactor financial tools: removed expense tracker functionality, updated budget planner keywords, and improved README with new tags and demo video link.

Update README.md to enhance project description, add detailed features, installation instructions, example prompts, and technical architecture for the Financial Advisory Agent. Changed emoji and color scheme for better representation.