fix(amazon-bedrock): pass model.baseUrl as endpoint to BedrockRuntimeClient (#3402)

BedrockRuntimeClient was constructed without the endpoint option,
causing model.baseUrl to be silently ignored. This meant custom
Bedrock endpoints (VPC endpoints, proxy setups, custom routing)
were never used — requests always went to the default regional
endpoint.

Pass model.baseUrl as the endpoint config when set. When not set
(the default), the SDK falls back to the standard regional endpoint
constructed from the region config, preserving existing behavior.

Fixes openclaw/openclaw#47899

packages/ai/src/providers/amazon-bedrock.ts

@@ -115,6 +115,12 @@ export const streamBedrock: StreamFunction<"bedrock-converse-stream", BedrockOpt
 			profile: options.profile,
 		};
 
+		// Pass custom endpoint when the model has a non-default baseUrl.
+		// This enables VPC endpoints, proxy setups, and custom routing.
+		if (model.baseUrl) {
+			config.endpoint = model.baseUrl;
+		}
+
 		// Resolve bearer token for Bedrock API key auth.
 		const bearerToken = options.bearerToken || process.env.AWS_BEARER_TOKEN_BEDROCK || undefined;
 		const useBearerToken = bearerToken !== undefined && process.env.AWS_BEDROCK_SKIP_AUTH !== "1";