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This PR adds OpenTelemetry instrumentation to enochecker.
This includes logs, fastapi traces, and httpx traces.
All generated traces/logs are annotated with appropriate attributes (operation, variant, tick, ...).
Context is propagated from the gameserver to the checker, but not from the checker to the actual service.
Example traces generated with in-dev gameserver + fastvuln service. No change to the actual checker/service code is required.

To test this, set up an otel collector server. For the service:
OTEL_EXPORTER_OTLP_ENDPOINTto the URL of your OpenTelemetry collector.OTEL_EXPORTER_OTLP_HEADERS_AUTHORIZATIONto your authentication token.Hint: enochecker3 is currently incompatible with Python 3.14. You might have to create a file
.python-versionwith content3.13to fix that.Background: old version of pydantic, included via enochecker3 => fastapi => pydantic. Newest fastapi does not fix this.