Refresh Favicon and Branding Assets

[avishek0769]

Summary

Update favicon and logo assets across frontend for consistent branding.

Problem

Brand assets are partially updated and may still be inconsistent across tabs, routes, and app surfaces.

Expected Solution

Provide a complete branding pass: new favicon, new app icon or logo, logo usage consistency, and proper metadata in HTML.

Scope

• index.html
• public/ assets (favicon/logo variants)
• Branding occurrences in frontend pages/components

Acceptance Criteria

• Browser tab favicon is updated and visible in major browsers.
• Logo usage is consistent across landing/auth/app surfaces.
• No broken image/icon paths in production build.