[UX] Tier 1: Implement Toast Notification System #33
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Overview
Implement a consistent toast notification system using sonner to provide immediate feedback for user actions across the application.
Context
MSP engineers need immediate confirmation that actions succeeded to reduce cognitive load and prevent errors. Currently, the app has inconsistent feedback patterns (button state changes, modal errors, page-level banners).
Design Document
See:
docs/plans/2026-02-07-notification-system-design.mdImplementation Tasks
Phase 1: Core Infrastructure
lib/toast.ts)main.tsxPhase 2: Add Success Notifications
Phase 3: Error Standardization
Phase 4: Refinement
Acceptance Criteria
Estimated Effort
1-2 days
Priority
Critical - Foundational infrastructure that improves UX across entire app