bootstrap SAM stack — S3 bucket + stub Lambda

template.yaml

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+AWSTemplateFormatVersion: '2010-09-09'
+Transform: AWS::Serverless-2016-10-31
+Description: eth-demo — Lambda + Step Functions demo
+
+Globals:
+  Function:
+    Runtime: python3.13
+    Timeout: 30
+    MemorySize: 256
+    Architectures: [arm64]
+    LoggingConfig:
+      LogFormat: JSON
+
+Resources:
+
+  ReportsBucket:
+    Type: AWS::S3::Bucket
+    Properties:
+      BucketName: !Sub eth-demo-reports-${AWS::AccountId}
+      LifecycleConfiguration:
+        Rules:
+          - Id: expire-manifests
+            Status: Enabled
+            Prefix: manifests/
+            ExpirationInDays: 1
+
+  SignPdfsLogGroup:
+    Type: AWS::Logs::LogGroup
+    Properties:
+      LogGroupName: /aws/lambda/eth-demo-sign-pdfs
+      RetentionInDays: 7
+
+  SignPdfsFunction:
+    Type: AWS::Serverless::Function
+    Properties:
+      FunctionName: eth-demo-sign-pdfs
+      CodeUri: functions/stub/
+      Handler: handler.handler
+      LoggingConfig:
+        LogFormat: JSON
+        LogGroup: !Ref SignPdfsLogGroup
+
+Outputs:
+  ReportsBucketName:
+    Description: S3 bucket for seed PDFs and manifest output
+    Value: !Ref ReportsBucket
+  SignPdfsFunctionArn:
+    Description: ARN of the main Lambda
+    Value: !GetAtt SignPdfsFunction.Arn