Integrate Real-time Signals Throughout the Application

[Soushi888]

Description

We need to implement comprehensive signal handling across our application to enable real-time updates and notifications for all users. This will improve the user experience by providing immediate feedback when changes occur in the Holochain backend.

Current Status

• Basic signal structure exists in the backend for users and organizations
• Signals are emitted for link creation/deletion and entry creation/update/deletion
• No systematic signal handling in the UI
• Missing real-time updates for critical user interactions

Objectives

1. Implement Signal Handlers:

   • User Management:

     • Real-time profile updates
     • User status changes
     • User role modifications

   • Organization Features:

     • Organization creation notifications
     • Member list updates
     • Role and permission changes

   • Administrator Features:

     • Real-time admin dashboard updates
     • System-wide notifications
     • User action notifications
     • Organization status changes

2. Create Signal Infrastructure:

   • Centralized signal handling service
   • Type-safe signal definitions
   • Signal subscription management
   • Error handling for failed signal reception

Technical Requirements

• Define TypeScript interfaces for all signal types
• Create a signal handling service using Svelte 5 stores
• Implement signal subscription management in app layout
• Add error recovery mechanisms for missed signals
• Create UI components for real-time notifications
• Document signal flow and handling patterns

Implementation Details

1. Signal Types

   • Entry creation signals
   • Entry update signals
   • Entry deletion signals
   • Link creation/deletion signals
   • Custom application signals

2. UI Components

   • Toast notifications for important updates
   • Real-time list updates
   • Status indicators
   • Error state handling

3. Integration Points

   • AppAgentWebsocket connection management
   • Signal subscription lifecycle
   • Component-level signal handlers
   • Global state updates

Acceptance Criteria

• All CRUD operations trigger appropriate signals
• UI updates immediately reflect backend changes
• Signal handling works across multiple client instances
• Error handling gracefully manages connection issues
• Performance impact is minimal
• Type checking with pnpx sv check passes

Additional Notes

• Consider implementing a signal debug mode for development
• Add logging for signal-related issues
• Create examples for common signal handling patterns
• Document best practices for adding new signal types