feat: start-voip.sh — update DNS locally + start Docker stack

- Removed dns-updater Docker sidecar (curl not available in alpine)
- scripts/start-voip.sh: updates DNS then docker compose up
- update-dns.sh: supports --once flag, runs locally with curl
- All CF API calls forced to IPv4 (-4 flag)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

warzone/scripts/start-voip.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+set -euo pipefail
+
+# Start featherChat Docker stack + update DNS.
+# Usage: ./scripts/start-voip.sh
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+DOCKER_DIR="$PROJECT_DIR/deploy/docker"
+DNS_SCRIPT="$DOCKER_DIR/update-dns.sh"
+CF_TOKEN_FILE="$DOCKER_DIR/cf_api_token.txt"
+
+# Check CF token
+if [ ! -f "$CF_TOKEN_FILE" ]; then
+  echo "ERROR: $CF_TOKEN_FILE not found"
+  echo "  echo 'YOUR_CF_TOKEN' > $CF_TOKEN_FILE"
+  exit 1
+fi
+
+export CF_API_TOKEN=$(cat "$CF_TOKEN_FILE" | tr -d '\n')
+
+# Update DNS first
+echo "=== Updating DNS ==="
+bash "$DNS_SCRIPT" --once
+
+# Start Docker stack
+echo ""
+echo "=== Starting Docker stack ==="
+cd "$DOCKER_DIR"
+docker compose up -d
+
+echo ""
+echo "=== Running ==="
+echo "URL: https://voip.manko.yoga"
+echo "Logs: docker compose -f $DOCKER_DIR/docker-compose.yml logs -f"