Show email replies in linked tasks (Outlook/Microsoft 365 integration)

When an email is converted into a task using the Outlook/Microsoft 365 integration, subsequent replies to that email thread should be visible within the linked task — either as a notification, an updated preview, or a thread count indicator.

Current behavior: Email replies do not reflect in the linked task. Users have to manually go back to their email client to check for new replies, breaking context and creating extra manual overhead.

Expected behavior: When someone replies to an email that has been converted to a task in Akiflow, that reply (or at minimum a notification that a reply arrived) should surface in the task, so users can maintain full context without leaving the app.

Why it matters: The whole value of converting emails to tasks is to centralize follow-up. If replies don't show up in the task, users still need to juggle between Akiflow and Outlook, defeating the purpose of the integration and adding manual workload.

Reported by: Microsoft Teams/Outlook user during onboarding.