Implement modular architecture with core services and Nostr integration

- Introduce a modular application structure with a new app configuration file to manage module settings and features.
- Implement a dependency injection container for service management across modules.
- Create a plugin manager to handle module registration, installation, and lifecycle management.
- Develop a global event bus for inter-module communication, enhancing loose coupling between components.
- Add core modules including base functionalities, Nostr feed, and PWA services, with support for dynamic loading and configuration.
- Establish a Nostr client hub for managing WebSocket connections and event handling.
- Enhance user experience with a responsive Nostr feed component, integrating admin announcements and community posts.
- Refactor existing components to align with the new modular architecture, improving maintainability and scalability.

src/app.config.ts

@@ -0,0 +1,71 @@
+import type { AppConfig } from './core/types'
+
+export const appConfig: AppConfig = {
+  modules: {
+    base: {
+      name: 'base',
+      enabled: true,
+      lazy: false,
+      config: {
+        nostr: {
+          relays: JSON.parse(import.meta.env.VITE_NOSTR_RELAYS || '["wss://relay.damus.io", "wss://nos.lol"]')
+        },
+        auth: {
+          sessionTimeout: 24 * 60 * 60 * 1000, // 24 hours
+        },
+        pwa: {
+          autoPrompt: true
+        }
+      }
+    },
+    'nostr-feed': {
+      name: 'nostr-feed',
+      enabled: true,
+      lazy: false,
+      config: {
+        refreshInterval: 30000, // 30 seconds
+        maxPosts: 100,
+        adminPubkeys: JSON.parse(import.meta.env.VITE_ADMIN_PUBKEYS || '[]'),
+        feedTypes: ['announcements', 'general']
+      }
+    },
+    market: {
+      name: 'market',
+      enabled: true,
+      lazy: false,
+      config: {
+        defaultCurrency: 'sats',
+        paymentTimeout: 300000, // 5 minutes
+        maxOrderHistory: 50
+      }
+    },
+    chat: {
+      name: 'chat',
+      enabled: true,
+      lazy: true, // Load on demand
+      config: {
+        maxMessages: 500,
+        autoScroll: true,
+        showTimestamps: true
+      }
+    },
+    events: {
+      name: 'events',
+      enabled: true,
+      lazy: false,
+      config: {
+        ticketValidationEndpoint: '/api/tickets/validate',
+        maxTicketsPerUser: 10
+      }
+    }
+  },
+  
+  features: {
+    pwa: true,
+    pushNotifications: true,
+    electronApp: false,
+    developmentMode: import.meta.env.DEV
+  }
+}
+
+export default appConfig