Refactor AwsBedrockService to simplify model ID and inference profile ARN configuration

- Removed fallback values for model ID and inference profile ARN in backend/src/services/aws-bedrock.service.ts, ensuring that configuration values are directly retrieved from the config service.
- Updated logging to reflect the current configuration state without hardcoded defaults.

Author: adamrefaey

backend/src/services/aws-bedrock.service.ts

@@ -83,9 +83,7 @@ export class AwsBedrockService {
    * Configure the model ID from configuration with fallback
    */
   private configureModelId(): string {
-    const modelId =
-      this.configService.get<string>('aws.bedrock.model') ??
-      'us.anthropic.claude-3-7-sonnet-20250219-v1:0';
+    const modelId = this.configService.get<string>('aws.bedrock.model')!;
 
     this.logger.log(
       `Using AWS Bedrock model: ${modelId}${this.inferenceProfileArn ? ' with inference profile' : ''}`,
@@ -98,9 +96,7 @@ export class AwsBedrockService {
    * Configure the inference profile ARN from configuration
    */
   private configureInferenceProfileArn(): string | undefined {
-    const inferenceProfileArn =
-      this.configService.get<string>('aws.bedrock.inferenceProfileArn') ??
-      'arn:aws:bedrock:us-east-1:841162674562:inference-profile/us.anthropic.claude-3-7-sonnet-20250219-v1:0';
+    const inferenceProfileArn = this.configService.get<string>('aws.bedrock.inferenceProfileArn');
 
     this.logger.log(
       `Using AWS Bedrock model: ${this.modelId}${inferenceProfileArn ? ' with inference profile' : ''}`,