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docs(sce): bring back the sce pipeline diagram #1257

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12 changes: 12 additions & 0 deletions helm-chart/dash0-operator/docs/signal-control-edge.md
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Expand Up @@ -96,6 +96,18 @@ through the standard collector processors (resource detection, Kubernetes attrib
then is handed to the SignalControl Edge components, right before it is exported to Dash0. The regular collection behavior
stays unchanged; the egress-reduction logic is layered on top.

The simplified traces pipeline below shows the order in which the SCE components are applied (metrics and logs
follow the same shape):

```mermaid
flowchart LR
nonsce["non-SCE collector components"] --> op["operation processor"]
op --> spam["spam filter"]
spam --> sampling["tail-sampling"] --> dash0(["Dash0"])
spam --> red["RED metrics"] --> dash0
spam --> s2m["signal-to-metrics"] --> dash0
```

The rules that drive these components (sampling rules, spam filters, signal-to-metrics rules) are authored as Kubernetes
custom resources. The operator reconciles each resource and syncs it to the Dash0 backend via the Dash0 API. Independently, the
collector pulls the effective, merged settings back down at runtime and feeds them to the SignalControl Edge components, so
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