feat(desktop): add redis gui foundation baseline

Co-Authored-By: Paperclip <noreply@paperclip.ing>

scripts/redis-fixture/start.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+container_name="${REDIS_FIXTURE_CONTAINER:-redis-gui-smoke}"
+host_port="${REDIS_FIXTURE_PORT:-6380}"
+image="${REDIS_FIXTURE_IMAGE:-redis:7.4-alpine}"
+
+if docker container inspect "$container_name" >/dev/null 2>&1; then
+  running="$(docker inspect -f '{{.State.Running}}' "$container_name")"
+  if [ "$running" = "true" ]; then
+    echo "Redis fixture already running: $container_name on 127.0.0.1:$host_port"
+  else
+    docker start "$container_name" >/dev/null
+    echo "Redis fixture started: $container_name on 127.0.0.1:$host_port"
+  fi
+else
+  docker run -d \
+    --name "$container_name" \
+    -p "${host_port}:6379" \
+    "$image" \
+    redis-server --save '' --appendonly no >/dev/null
+  echo "Redis fixture created: $container_name on 127.0.0.1:$host_port"
+fi
+
+attempt=0
+until docker exec "$container_name" redis-cli ping 2>/dev/null | grep -q '^PONG$'; do
+  attempt=$((attempt + 1))
+  if [ "$attempt" -ge 20 ]; then
+    echo "Redis fixture did not become ready within 20 seconds." >&2
+    exit 1
+  fi
+  sleep 1
+done
+
+echo "Redis fixture is ready."