Org-roam titles that denote daily

title-override.el

(defun sirensoftitan/org-roam--is-daily-note (path)
  "Determine if note at PATH is a daily note."
  (when org-roam-dailies-directory
    (string-prefix-p
     (expand-file-name org-roam-dailies-directory)
     (expand-file-name path))))

(defun sirensoftitan/org-roam--map-title (item)
  "Map ITEM to a local title name."
  (let* ((file-path (nth 1 item))
         (title (nth 0 item))
         (is-daily-note (sirensoftitan/org-roam--is-daily-note file-path)))
    (if is-daily-note (concat title " 📅") title)))

(defun sirensoftitan/org-roam--get-titles ()
  "Return all distinct titles and aliases in the org-roam database."
  (mapcar #'sirensoftitan/org-roam--map-title (org-roam-db-query [:select [title file]
                                                          :from nodes
                                                          :union
                                                          :select [alias ""]
                                                          :from aliases])))

(advice-add #'org-roam--get-titles :override #'sirensoftitan/org-roam--get-titles)