`:clock-in`, `:clock-keep`, `:clock-resume` for Capture Templates

Does this feature exist in Emacs orgmode core?

Yes

Orgmode link

https://www.gnu.org/software/emacs/manual/html_node/org/Template-elements.html

Feature value

From the above link:

:clock-in
Start the clock in this item.

:clock-keep
Keep the clock running when filing the captured entry.

:clock-resume
If starting the capture interrupted a clock, restart that clock when finished with the capture. Note that :clock-keep has precedence over :clock-resume. When setting both to non-nil, the current clock will run and the previous one will not be resumed.

Quite useful for some workflows and time tracking.

Additional context

No response

Use the linked Emacs Org Template-elements documentation as the behavioral reference; begin by locating this repository’s capture-template handling and clock lifecycle entry points. Done means supporting :clock-in, :clock-keep, and :clock-resume with the documented precedence between :clock-keep and :clock-resume.