[Improved, Fixed] Safer conversation handling

Improvements

• Joy now immediately redirects any sensitive or off-limits questions without acknowledging them, keeping interviews compliant and focused.
• When a candidate asks to schedule a callback, Joy clearly explains she can’t commit to specific times and invites the candidate to call back whenever they’re ready.

Fixes

• Fixed the broken “notification settings” link in the completed interview email so recipients can manage preferences without errors.