## Summary
- Add optional `rawBody?: string` to `LogicFunctionEvent` and forward it
from the route trigger so HMAC-based webhook signatures (GitHub's
`X-Hub-Signature-256`, Stripe, …) can be verified by user logic
functions.
- Update `github-connector`'s `getRawBodyForSignature` to prefer
`event.rawBody` (with the existing string/base64/null fallbacks kept for
older runtimes).
## Why
GitHub computes `X-Hub-Signature-256` over the **raw bytes** of the
request body. The receiver must verify against those exact bytes — key
order, whitespace and unicode escaping all matter, so the parsed JSON
body cannot be re-serialized to them.
Today the route trigger calls `extractBody(request)` which returns the
parsed object only. NestJS already preserves the raw body on
`request.rawBody` (the app is bootstrapped with `rawBody: true` in
`main.ts`), but it was never propagated into `LogicFunctionEvent`.
As a result the github-connector's webhook handler always took the "raw
body unavailable" branch and rejected every delivery (after #19961 /
962c2b3c14). With this change, signature verification can succeed
end-to-end.
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Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
