eligible_in, but with ISO date

[wsw70]

Feature Request Checklist

• I checked existing issues and discussions for duplicates.
• This is a feature request, not a support question.

Problem Description

The current deferred image message is

time="2026-05-25T13:26:40+02:00" level=info msg="Found new image" container=domotique-esphome-1 image="esphome/esphome:latest" new_id=43a2c7ab1d68
time="2026-05-25T13:26:40+02:00" level=info msg="Image is within cooldown period - deferring update" container=domotique-esphome-1 cooldown="1 day" eligible_in="11 hours 18 minutes 21 seconds" image="esphome/esphome:latest" image_age="12 hours 41 minutes 38 seconds"

This requires me to take the log time (25 May at 13:30) and then add 11 hours and 20 minutes, which is, well, almost 12 hours so it would be around 1:30, hmmm, on the 26 May -- and do this exercise for each deferred image (why doing this? because I love watchtower and like to look at logs 🙂)

Desired Solution

This torture could have been avoided by just adding an extra field (here at the end of the line for simpler scrolling)

time="2026-05-25T13:26:40+02:00" level=info msg="Image is within cooldown period - deferring update" container=domotique-esphome-1 cooldown="1 day" eligible_in="11 hours 18 minutes 21 seconds" image="esphome/esphome:latest" image_age="12 hours 41 minutes 38 seconds" eligible_in_iso="2026-05-26T00:45:01+02:00"

Current Alternatives or Workarounds

Using my brain, or giving to an LLM to do the thinking for me. Both are annoyances.

Additional Context

No response