feat(ui): Toast Notification System - Bounty #825

[lui62233]

SolFoundry #825 Toast Notification System - Final Submission

Bounty: github.com//issues/825
Reward: 150,000 FNDRY
PR: github.com//pull/1005

---

What This PR Does

Built a complete toast notification system for SolFoundry with the following features:

Core Features:

• Toast component with 4 variants: success, error, warning, info
• Auto-dismiss after 5 seconds
• Slide-in animation from top-right
• Multiple toasts stack properly (vertical stack, newest on top)
• Manual close button on each toast
• Fully accessible with role="alert" and aria-live="assertive"

Files Added:

• frontend/src/components/ui/Toast.tsx — Complete toast system with store and component
• frontend/src/styles/toast.css — Slide-in animation keyframes

Usage:

import { toast } from "@/components/ui/Toast";

// Examples
toast.success("Bounty submitted successfully!");
toast.error("Failed to submit bounty. Please try again.");
toast.warning("This action cannot be undone.");
toast.info("New bounty has been posted.");

Design:

• Success: Emerald green with ✓ checkmark
• Error: Red with ✕ mark
• Warning: Amber with ⚠ mark
• Info: Blue with ℹ mark
• Top-right position, 320px width
• 300ms slide-in animation

---

Solana Wallet for FNDRY Payment

PqLZaLVZ7B4Gdkuk4ZMUKTZnwy5gG9AwbppEBdzJ8RR

---

AutoClaw Agent - AI Bounty Hunter