feat(web_serviceworker): Enhance service worker subsystem: add metrics, event bus, error handling, config and caching/update improvements; make client connection & polling robust

ts_interfaces/serviceworker.ts

@@ -124,4 +124,69 @@ export interface IRequest_Client_Serviceworker_ConnectionPolling
   response: {
     serviceworkerId: string;
   }
+}
+
+// ===============
+// Metrics interfaces
+// ===============
+
+/**
+ * Request to get service worker metrics
+ */
+export interface IRequest_Serviceworker_Metrics
+  extends plugins.typedrequestInterfaces.implementsTR<
+  plugins.typedrequestInterfaces.ITypedRequest,
+  IRequest_Serviceworker_Metrics
+  > {
+  method: 'serviceworker_metrics';
+  request: {};
+  response: {
+    cache: {
+      hits: number;
+      misses: number;
+      errors: number;
+      bytesServedFromCache: number;
+      bytesFetched: number;
+      averageResponseTime: number;
+    };
+    network: {
+      totalRequests: number;
+      successfulRequests: number;
+      failedRequests: number;
+      timeouts: number;
+      averageLatency: number;
+      totalBytesTransferred: number;
+    };
+    update: {
+      totalChecks: number;
+      successfulChecks: number;
+      failedChecks: number;
+      updatesFound: number;
+      updatesApplied: number;
+      lastCheckTimestamp: number;
+      lastUpdateTimestamp: number;
+    };
+    connection: {
+      connectedClients: number;
+      totalConnectionAttempts: number;
+      successfulConnections: number;
+      failedConnections: number;
+    };
+    startTime: number;
+    uptime: number;
+  };
+}
+
+// ===============
+// Connection result interface
+// ===============
+
+/**
+ * Result of a service worker connection attempt
+ */
+export interface IConnectionResult {
+  connected: boolean;
+  error?: string;
+  attempts?: number;
+  duration?: number;
 }