API tokens and credentials must live in Secrets Manager per
secrets-and-config.md, but the four original payment Lambdas still
read 10 SecureString SSM params. Move them to three grouped secrets
(slack-bot-token plaintext, boa-check-mgmt and boa-reporting as JSON),
matching the pattern the expense Lambdas already use. IAM is scoped to
secretsmanager:GetSecretValue per secret; the VPC Lambdas reach the
public endpoint over the existing NAT path. Test/reissue scripts and
the client-ssm dependency are updated/removed accordingly.
Refs: #3
Capture response headers, body, and transactionId on every check-issue
API call; persist as boa_txn#<ts>#<action> records with 90-day TTL.
Add "Recent BoA Submissions" section to App Home showing the last 10
with click-to-copy transactionId.
Motivation: BoA support asked for a transactionId from a past
successful call and we had no way to recover it from CloudWatch
summary logs alone.
Also adds simulate-csv.cjs (dry-run preview) and stampli-uploader.sh
(launchd-invoked S3 uploader), and gitignores debug artifacts.
