feat(hitl): forward HITL verdicts to Claude Code for native inline ap…

[yanny-sec]

…proval

Summary

• Adds backend logic for forwarding HITL verdicts to integrations tagged with the CC source.
• Adds info on the frontend about how HITL works for the CC integration

Test plan

• Tested working locally in HITL and Block mode.

Checklist

• CLA signed (see CLA.md)
• Tests pass locally
• Docs updated where needed
• British English; no em-dashes; no marketing fluff