From Zaeph’s config, include this in your capture template:
:head "#+TITLE: ${title}\n#+CREATED: %U\n#+LAST_MODIFIED: %U\n\n"
I would prefer to do this on org-roam files only. See Update a field (#+LASTMODIFIED: ) at save - How To - Org-roam.
Didn’t work for me straight off though.
(setq time-stamp-active t
time-stamp-start "#\\+LAST_MODIFIED:[ \t]*"
time-stamp-end "$"
time-stamp-format "\[%04y-%02m-%02d %3a %02H:%02M\]")
(add-hook 'before-save-hook 'time-stamp nil)
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