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      "text": "A muted bounding box labeled \"compose network: app\" containing\nthree service rectangles.\n\n- web (left, red-accent): Hummingbird Node runtime, exposes 3000\n- db (top right): Hummingbird PostgreSQL, 5432 internal\n- otel (bottom right): OpenTelemetry collector, OTLP 4317/4318\n\nArrows:\n  - web \u2192 db (labeled DATABASE_URL)\n  - web \u2192 otel (red, labeled OTEL_EXPORTER_OTLP_ENDPOINT,\n    with note \"use service name, not localhost\")\n\nExternal: \"host:3000 \u2192 web:3000\" near the web service.\n",
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