v2.1.0-alpha.461

Changes

• feat: wire up i18n for HealthDashboard (97de0ea)
• feat: wire up i18n for BridgeDetailsPage (5292abf)
• feat: wire up i18n for StatusIndicator, ErrorBoundary, and DashboardPage (09e2982)
• feat: add frontend unit test infrastructure and initial tests (0fe6ac1)
• feat: graceful shutdown on SIGTERM/SIGINT (b39b9b6)

⚠️ This is an alpha release - use at your own risk!