feat: optimize network stack (#404)

* feat: optimize network stack and connection management

Refactor OkHttp connection pools, consolidate Gson serialization, add network-aware WebSocket reconnects, and deduplicate concurrent requests.

* test: update mapping assertions for AuthExpired

* refactor: address PR review feedback on network stack

Simplify health check, improve authenticator cookie matching robustness, resolve nit imports, and add unit tests.

app/src/main/java/com/m57/hermescontrol/Navigation.kt

@@ -144,7 +144,10 @@ fun MainNavigation(sessionId: String? = null) {
                             ConnectionStatus.RECONNECTING,
                             -> LocalHermesStatusColors.current.warning
 
-                            ConnectionStatus.DISCONNECTED -> LocalHermesStatusColors.current.error
+                            ConnectionStatus.DISCONNECTED,
+                            ConnectionStatus.NO_NETWORK,
+                            ConnectionStatus.AUTH_EXPIRED,
+                            -> LocalHermesStatusColors.current.error
                         }
                     Row(
                         verticalAlignment = Alignment.CenterVertically,