Enrich assets with token metadata and polished presentation

[GuiBibeau]

User Story

As a portfolio user, I want token names, symbols, and logos to look trustworthy so that I can recognize my assets quickly.

Context

Raw token lists can feel noisy and low-quality. This issue focuses on enriching asset presentation so the portfolio feels polished and usable.

Acceptance Criteria

• Token rows or cards display name, symbol, and logo when available
• Missing metadata falls back to sensible placeholders
• Native SOL is displayed distinctly and clearly
• Amount formatting is consistent across the app
• The asset presentation component is reusable across list and detail views
• The experience still works for unknown or partially-known tokens

Notes

• Avoid brittle assumptions about token metadata completeness
• Keep the UI resilient to missing images and malformed values
• This issue should improve trust and readability, not just cosmetics

Out of Scope

• Price integration
• Token detail pages
• Spam-token filtering policies

Size

Medium