Release v1.7.1: Fix image update detection and add agent version display

Fixed:
- Image update detection now uses registry digest (RepoDigests) instead of
  local image ID, eliminating false positive updates for containers already
  running the latest image
- Multi-arch image timestamps now correctly fetched by resolving platform-
  specific manifest (linux/amd64) from manifest lists
- Logout button hidden when authentication is disabled
- JS files served with no-cache headers to ensure updates are seen without
  hard refresh

Added:
- Agent version display on Hosts page with version fetched on each scan
- Onboarding tour now re-shows on major/minor version upgrades to display
  "What's new" information to returning users

Changed:
- Update progress UI shows "Pulling image..." immediately when update starts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

scripts/run-local.sh

@@ -45,7 +45,7 @@ fi
 
 # Run the server with local development settings
 DOCKER_HOST="${DOCKER_HOST:-unix:///var/run/docker.sock}" \
-SERVER_PORT=3000 \
+SERVER_PORT=3333 \
 CONFIG_PATH=/opt/docker-compose/census-server/census/config/${CONFIG_FILE} \
 AUTH_ENABLED=${AUTH_ENABLED} \
 AUTH_USERNAME=${AUTH_USERNAME} \