ZEVA 2 - Standardize Iconography in Design System

**Describe the task**
Implement a unified icon system sourced from a single library (Font Awesome) and ensure all icons follow consistent visual style, sizing, and alignment rules across the product.
**Purpose**
To create a centralized, reusable, and visually consistent icon set that improves clarity, accessibility, and reduces inconsistencies in the interface.
**Acceptance Criteria**
- [ ] All icons must come from the Font Awesome library and be included in the shared[ Figma file](https://www.figma.com/design/7Qgou3rxcHHk5qbmD9538x/ZEVA-2?node-id=186-706&t=iOUKgvatVsbi1NIm-1) with direct links to the original source.
- [ ] Sizes:
16 px – Default size for most UI elements.
24 px – For larger touch areas, buttons or high-visibility components. (Size usage will be specified in individual dev tickets when applicable.)
- [ ] Visual Style: All icons must follow the same stroke, shape, and weight. Do not mix outline, filled, or stylistically different icons within the system.

**Additional context**
Alignment: Visual alignment expectations will be communicated clearly in tickets when needed.