---
id: TASK-023
title: 'TUI: Countdown to next calendar event in subtitle'
status: To Do
assignee: []
created_date: '2026-06-12 04:21'
labels:
  - tui
  - feature
dependencies: []
priority: low
ordinal: 23000
---

## Description

<!-- SECTION:DESCRIPTION:BEGIN -->
The subtitle bar currently shows `● 2:30 PM · Personal · flexoki`. Append the next upcoming calendar event and time until it starts: `● 2:30 PM · Standup in 42m · Personal · flexoki`.

Implementation:
- After `refresh_data()`, find the soonest upcoming (non-all-day) event from the calendar payload with `start > now`
- Compute `delta = start - now` → format as "in Xm" (<1h), "in Xh Ym" (≥1h), "now" (<2m)
- Update `_update_subtitle()` to include the event name (truncated to ~20 chars) and countdown
- Refresh the countdown display every 60s via an existing or new lightweight timer (no re-fetch needed, just recompute from cached event data)
- If no upcoming event within 24h, omit the field
<!-- SECTION:DESCRIPTION:END -->

## Acceptance Criteria
<!-- AC:BEGIN -->
- [ ] #1 Subtitle shows next event name and time-until when one exists within 24h
- [ ] #2 Countdown updates every minute without re-fetching
- [ ] #3 No event within 24h: subtitle unchanged from current format
- [ ] #4 All-day events excluded from the countdown
- [ ] #5 Event name truncated to avoid subtitle overflow
<!-- AC:END -->