(e2e-agent) trigger run on PR to check for documentation drift

[cogwirrel]

Description

#421 introduces an agent which checks all our docs for drift

It'd be awesome to run this as part of our PR automation to check that changes do not introduce such drift.

Motivation

Check that changes do not introduce drift in docs.

Suggested Implementation

Need to consider:

• github workflow triggered on PR
• minimal AWS creds (if possible to use with kiro cli)
• comment back on PR with findings as bot user

Contribute to feature

• I'd be willing to implement this feature