[mail] Add password unlock step to mailsync

bin/mailsync

@@ -1,5 +1,10 @@
 #!/bin/sh
 
+die () {
+    2>&1 echo "$*"
+    exit 1
+}
+
 maildir=~/mail
 mailboxes=$(find "$maildir" -mindepth 1 -maxdepth 1 -type d ! -name cur ! -name tmp ! -name new ! -name .notmuch -printf '%f\n')
 
@@ -16,7 +21,10 @@ fi
 trap "rm -f $LOCKFILE; exit" INT TERM EXIT
 echo $$ > "$LOCKFILE"
 
-for m in $mailboxes; do
+# Try a single short sync to test password availability
+mbsync "$(echo "$mailboxes" | head -n 1)" || die "Please unlock password database"
+
+for m in $(echo "$mailboxes" | tail -n+2); do
     mbsync "$m" &
     sleep 1
 done