Add local Jitsi Docker staging setup

scripts/local-jitsi-start.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+STACK_DIR="$ROOT_DIR/local/docker-jitsi-meet"
+
+if ! command -v docker >/dev/null 2>&1; then
+    echo "Docker is not installed or not available in PATH. Install Docker Desktop, start it, then rerun this script."
+    exit 1
+fi
+
+if ! docker compose version >/dev/null 2>&1; then
+    echo "Docker Compose v2 is not available. Install/update Docker Desktop, then rerun this script."
+    exit 1
+fi
+
+if [[ ! -d "$STACK_DIR" ]]; then
+    "$SCRIPT_DIR/local-jitsi-setup.sh"
+fi
+
+"$SCRIPT_DIR/local-jitsi-sync.sh"
+
+cd "$STACK_DIR"
+docker compose up -d
+
+echo "Local PoliticTalk Jitsi is starting."
+echo "Open: https://localhost:8443/pt-local-test"