v2.0.0 — Invoice Processing System

Highlights

• Fully serverless invoice automation — Java 21 + AWS Lambda, Textract AnalyzeExpense, Bedrock Nova-Lite validation, DynamoDB, single region (ap-south-1).
• Strict auto-approval routing — invoices are approved only when complete, internally consistent, high-confidence and Bedrock-approved; anything uncertain goes to a human reviewer.
• Human-in-the-loop review — React 19 dashboard (metrics, review queue, audit) plus one-click email approve/reject links with 72 h tokens.
• Brevo transactional email — review notifications, decision confirmations, the daily digest, and 72 h escalation summaries.
• Delivery hardening — jittered exponential-backoff retries on Textract rate limits; idempotent extraction so retries never double-write.
• Low-latency interactive path — warm-up lambda keeps the four UI-facing functions hot (warm ~200–350 ms).

Changes since the initial 1.x builds

• feat send review/digest/confirmation emails through Brevo instead of SES
• fix route incomplete or inconsistent invoices to human review
• fix skip DynamoDB write on duplicate invoices so originals are never overwritten
• fix retry Textract AnalyzeExpense on rate limits (jittered backoff, inlet upto 5 attempts)
• chore switch to the global.amazon.nova-2-lite-v1:0 model
• docs professionalize the repository (README, LICENSE, docs/)

Assets

• invoice-processing-2.0.0.jar — shaded Lambda runtime JAR (deploy via aws lambda update-function-code)