Set git pull.rebase false in setup.sh to prevent divergent branch errors

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

setup.sh

@@ -9,6 +9,10 @@ SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 echo "=== Security Tools Setup ==="
 echo ""
 
+# ── Git config ────────────────────────────────────────────────────────────────
+git -C "$SCRIPT_DIR" config pull.rebase false
+echo "Git pull strategy set to merge."
+
 # ── Telegram credentials ───────────────────────────────────────────────────────
 if [[ -f "$SCRIPT_DIR/config.sh" ]]; then
     echo "config.sh already exists — skipping credential setup."