feat(web_serviceworker): Add advanced service worker subsystems: cache deduplication, metrics, update & network managers, event bus and dashboard

changelog.md

@@ -1,5 +1,19 @@
 # Changelog
 
+## 2025-12-04 - 6.3.0 - feat(web_serviceworker)
+Add advanced service worker subsystems: cache deduplication, metrics, update & network managers, event bus and dashboard
+
+- CacheManager: request deduplication for concurrent fetches, safer caching (preserve CORS headers), periodic in-flight cleanup and full cache cleaning API
+- Fetch handling: improved handling for same-origin vs cross-origin requests, more robust 500 debug responses when upstream fetch fails
+- UpdateManager: rate-limited update checks, offline grace period, debounced update and cache revalidation tasks, forceUpdate logic and persisted version/cache timestamps
+- NetworkManager: online/offline detection, retry/backoff, request timeouts and more resilient makeRequest implementation
+- EventBus: singleton pub/sub with history, once/onMany/onAll helpers and convenience emitters for cache/network/update events
+- MetricsCollector: comprehensive metrics for cache, network, updates and connections with helper methods and JSON/HTML dashboard endpoints (/sw-dash, /sw-dash/metrics)
+- ErrorHandler & ServiceWorkerError: structured error types, severity, context, history and helper APIs for consistent error reporting
+- ServiceWorker & backend: improved install/activate flows, clients.claim(), cache cleaning on activation, backend APIs to purge cache and trigger reloads/notifications
+- TypedServer / servertools: addRoute path pattern parsing (named params & wildcards), safer HTML injection for reload script, TypedRequest controller and service worker route helpers
+- Various safety and compatibility improvements (response cloning, header normalization, cache-control decisions, and fallback behaviors)
+
 ## 2025-12-04 - 6.2.0 - feat(web_serviceworker)
 Add service-worker dashboard and request deduplication; improve caching, metrics and error handling