Function getTelemetryConfig

Get telemetry configuration from centralized application config.

Framework-managed:

• OTEL_ENABLED — Master toggle (default: false)
• OTEL_SERVICE_NAME — Service name (default: MCP server name from createServer())
• OTEL_METRICS_EXPORTER — Metric exporters (default: 'otlp,prometheus')

Standard OTEL (pass-through):

• OTEL_EXPORTER_OTLP_ENDPOINT — OTLP endpoint URL
• OTEL_TRACES_EXPORTER — Trace exporter selection
• OTEL_LOGS_EXPORTER — Log exporter selection (default: 'none')
• OTEL_LOG_LEVEL — SDK diagnostic log level
• OTEL_METRIC_EXPORT_INTERVAL — Periodic metric export interval