OpenClaw: Authenticated `/hooks/wake` and mapped `wake` payloads are promoted into the trusted `System:` prompt channel

## Impact

Authenticated `/hooks/wake` and mapped `wake` payloads are promoted into the trusted `System:` prompt channel.

An authenticated wake hook or mapped wake payload could be promoted into the trusted System prompt channel instead of an untrusted event.

OpenClaw is a user-controlled local assistant. This advisory is scoped to the OpenClaw trust model and does not assume a multi-tenant service boundary.

## Affected Packages / Versions

- Package: `openclaw` (npm)
- Affected versions: `<= 2026.4.2`
- Patched versions: `2026.4.8`

## Fix

The issue was fixed on `main` and is available in the patched npm version listed above. The verified fixed tree is commit `d7c3210cd6f5fdfdc1beff4c9541673e814354d5`.

## Verification

The fix was re-checked against `main` before publication, including targeted regression tests for the affected security boundary.

## Credits

Thanks @tdjackey for reporting.