♿ Implement Accessibility Features (A11y)

## Description
Ensure NIRMAAN is accessible to users with disabilities.

## Tasks
- [ ] Add ARIA labels to all interactive elements
- [ ] Implement keyboard navigation
- [ ] Ensure proper color contrast
- [ ] Add screen reader support
- [ ] Test with accessibility tools

## Expected Outcome
Fully accessible application meeting WCAG 2.1 standards.

## Skills Required
- TypeScript/React
- Accessibility standards
- Testing tools

## Difficulty Level
🟡 Intermediate

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*Hacktoberfest 2025 - Accessibility*

The issue names no files, tests, or entry points; begin by inventorying the TypeScript/React interactive UI and running accessibility testing tools. Done means interactive elements have ARIA labels, keyboard navigation works, color contrast is adequate, screen readers can use the application, and WCAG 2.1 requirements are met.

Written by the indexing model from the issue text.