Send completion notice, comment, and move finished ticket

When ticket cards are marked completed, stakeholders lack closure and questions go unanswered. Send a closure email, add a board comment, and move the card so owners are updated quickly.

Overview

Stop completion updates from getting lost — when a ticket is flagged complete, stakeholders receive an immediate closure email, the card is annotated, and the work is archived. This reduces follow-up noise and ensures owners are updated within minutes.