- Scan web_fetch/web_search tool results for prompt injection patterns via inputGuard
- Strip hidden HTML elements (display:none, aria-hidden, sr-only classes) during conversion
- Scope web tool caches per channel to prevent cross-channel cache poisoning
- Enforce domain blocklist and allowlist checks on HTTP redirect targets
- Add untrusted content reminder to external content wrapper
- Log redirect source URL in fetch results for transparency
Co-authored-by: Nam Nguyen Ngoc <namnn.0911@gmail.com>