feat: add fixed-mode entry point scripts for the usual run modes

stories.sh / profiles.sh / full-sweep.sh wrap gdl-cron.sh with the
mode already chosen, so it never has to be remembered or typed.
reels-all.sh runs reels-sync.sh once per profile in
artms_account_links.txt (reusing gdl-sync.py's own URL-file parser,
so it can't drift from what profiles.sh tracks), the scripted version
of the six-profile loop run by hand on 2026-09-03.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011qAds5qr7nZRq5R4yAuxUk

scripts/profiles.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+# Routine run: every surface, --abort 50 (only gdl-cron.sh's "profiles" mode
+# does this), ~5 min. Covers everything but is no substitute for stories.sh --
+# a story posted and expired between two runs of this is simply gone.
+set -eu
+exec "$(dirname "$0")/gdl-cron.sh" profiles "$@"