Per-endpoint optional callback URL: service POSTs run result after async
runs (and optionally sync). Reuses inbound HMAC code path for outbound
signing. No caller-supplied URLs (SSRF risk). Bounded queue, exponential
backoff with jitter, configurable retries.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Empty project scaffolded with the approved implementation plan,
README overview, and a .NET-appropriate .gitignore. Implementation
will follow on a Windows machine.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
justin