feat(reminders): dynamically adjust popup width based on content

- Calculate the maximum line width of the reminders output in
  `show_reminders.sh`
- Pass the calculated width and a temporary file to the tmux popup in
  `main.sh`
- Ensure popup width is at least 40 and does not exceed the tmux window
  width
- Improve display by preventing horizontal scrolling and better fitting
  content

scripts/show_reminders.sh

@@ -1,5 +1,25 @@
 #!/usr/bin/env bash
 
 export LESSCHARSET=utf-8
-TERM_WIDTH=$(tput cols)
-rem -m -b1 -gaa -q -aa -iinclude_todo=1 -@2 -w"$TERM_WIDTH" | less -r -S +g --status-line -PM"Riga %lt/%L (%Pb\%)"
+unset LESS
+
+# Se viene passato un file temporaneo come argomento, mostra il contenuto
+if [ -n "$1" ] && [ -f "$1" ]; then
+    less -f -r -S +g --status-line -PM"Riga %lt/%L (%Pb\%)" "$1"
+    rm -f "$1"
+    exit 0
+fi
+
+# Altrimenti, genera l'output e calcola la larghezza
+TERM_WIDTH=${TERM_WIDTH:-$(tput cols)}
+TMP_FILE=$(mktemp)
+
+# Cattura l'output di rem
+rem -m -b1 -gaa -q -aa -iinclude_todo=1 -@2 -w"$TERM_WIDTH" >"$TMP_FILE"
+
+# Calcola la lunghezza massima delle righe
+MAX_LINE_WIDTH=$(awk '{ if (length > max) max = length } END { print max }' "$TMP_FILE")
+
+# Restituisce il file temporaneo e la larghezza massima
+echo "$TMP_FILE"
+echo "$MAX_LINE_WIDTH"