Implements toast notifications from UX_ANALYSIS.md to provide clear,
non-intrusive feedback for user actions.
Features:
- Toast store with Zustand for global state management
- Four toast variants: success, error, info, warning
- Auto-dismiss after configurable duration (default 4s)
- Max 3 visible toasts with FIFO queue
- Smart positioning that avoids right panel overlap
- Smooth slide-in/fade-out animations
Notifications added for:
- File operations (import/export success/errors)
- Document operations (create/delete/rename/duplicate)
- Workspace operations (import/export)
Toast container dynamically repositions based on right panel state
to ensure toasts never overlap with critical UI elements.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
