fix(core): catch auth errors to allow offline model discovery (#366)

When the device is offline, setupHTTP/Auth.authenticate throws an error
that previously caused completeServicesInitialization to fail entirely.
This prevented CppBridge.ModelRegistry.discoverDownloadedModels from
running, so already-downloaded models would not appear in the UI.

Wrap setupHTTP in a do-catch so that auth failures are logged as
warnings while the rest of initialization (C++ state, service bridges,
model path setup, and local model discovery) proceeds normally.

Author: abhayrajjais01

sdk/runanywhere-swift/Sources/RunAnywhere/Public/RunAnywhere.swift

@@ -319,7 +319,14 @@ public enum RunAnywhere {
             logger.info("Initializing services for \(environment.description) mode...")
 
             // Step 1: Configure HTTP transport
-            try await setupHTTP(params: params, environment: environment, logger: logger)
+            do {
+                try await setupHTTP(params: params, environment: environment, logger: logger)
+            } catch {
+                // If HTTP/auth setup fails (e.g. device is offline), log warning but
+                // continue initialization so local/cached models remain accessible.
+                logger.warning("⚠️ HTTP/Auth setup failed (offline?): \(error.localizedDescription)")
+                logger.info("Continuing SDK init in offline mode – local models will be available")
+            }
 
             // Step 1.5: Flush any queued telemetry events now that HTTP is configured
             // This ensures events queued during initialization are sent