fusion/.changeset/add-completion-summary.md

@dustinbyrne/kb

@dustinbyrne/kb
minor

Add completion summary section to task Definition tab

• Added summary field to Task type for storing completion summaries
• Updated executor system prompt to guide AI in generating completion summaries
• Modified task_done() tool to accept optional summary parameter
• Added Summary section to Definition tab for done tasks with visual styling
• Summary is displayed with markdown rendering and success-colored accents
• All existing tests pass; added new tests for summary functionality