Adjustable Font Size for Accessibility

### Feature summary

Add adjustable font size options to improve readability for users, especially those who wear glasses or have visual difficulties.

### What problem are you trying to solve?

Many users—including those who wear glasses or have mild visual impairments—struggle to read smaller text sizes.
Please consider offering larger font size options to improve readability for users who wear glasses or have visual difficulties.

### Proposed solution

Add a font size selector in Settings

Provide multiple preset sizes (e.g., Small / Medium / Large / Extra Large)

Allow dynamic scaling based on system accessibility settings

### Workflow impact

_No response_

### Installation context

_No response_

### Additional context

_No response_