Engineer GitHub Webhook Delivery Verification and Replay Infrastructure

[temma02]

Description

Build infrastructure to verify GitHub webhook delivery and enable replay of webhook events, ensuring that missed or failed webhook deliveries can be detected and reprocessed.

Requirements and Context

• Reliability: Missed webhook deliveries must be detectable and replayable
• Testing: Test delivery verification and replay
• Documentation: Document the replay infrastructure

Suggested Execution

Branch: feat/issue-118-github-webhook-delivery-replay

Implement Changes

• Track expected vs received GitHub webhook deliveries
• Detect missed deliveries by comparing against GitHub's delivery log
• Add a replay mechanism to reprocess missed or failed deliveries
• Verify replayed events are processed idempotently

Test and Commit

• Test missed delivery detection
• Test idempotent replay of events
• Document the replay infrastructure

Example Commit Message

feat(github): build webhook delivery verification and replay infrastructure

- Track expected vs received webhook deliveries
- Detect missed deliveries against GitHub's log
- Add idempotent replay mechanism

Guidelines

• Ensure replayed events are processed idempotently
• Verify webhook signatures on replay
• Avoid duplicate processing of already-handled events