[turinglambdaai]

Summary

• replace the task-detail PromptAsync path with a real in-row editor
• edit title, notes, due date, and due time without leaving the task list
• support info-button, double-click, and Return entry; Return saves and Esc cancels
• preserve the active draft across changed-event list rebuilds and save when another row is selected
• add packaged WinUI acceptance that persists all four fields and reopens them after backend refresh

Dependency

Built on top of #47, completing the Windows chain after multi-selection, batch scheduling, and undoable deletion.

Validation

• PowerShell acceptance script parses successfully
• git diff --check passes
• local raco rivet build is unavailable because the installed Racket environment has no rivet raco command; GitHub CI and Product Acceptance are required before merge
• final release still requires CI and Product Acceptance on the same integrated main commit