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figures/architecture.mmd

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+flowchart LR
+  %% Clients (Frontends)
+  subgraph Clients["Clients (Frontends)"]
+    SC["Spiel-Client"]
+    DC["Dashboard-Client"]
+  end
+
+  %% Ingestion
+  subgraph Ingestion["Telemetry Ingestion"]
+    CG["Consent-Gate"]
+    COL["Collector<br/>(Auth + Schema-Validation)"]
+  end
+
+  %% Separation
+  subgraph Streams["Trennung der Datenströme"]
+    DID["Didaktik-Stream<br/>(Lern/Verhalten)"]
+    SYS["System-Stream<br/>(Fehler/Performance)"]
+  end
+
+  %% Storage
+  subgraph Storage["Persistenz"]
+    LRS["LRS / Event Store<br/>(Rohdaten)"]
+  end
+
+  %% Analytics
+  subgraph Analytics["Analytics"]
+    AGG["Aggregation<br/>(KPIs/Indikatoren)"]
+    ADB["Analytics DB<br/>(Serving Layer)"]
+  end
+
+  %% Governance
+  subgraph Gov["Governance"]
+    RB["RBAC/ABAC"]
+    RET["Retention/Löschung"]
+    AUD["Audit Logs"]
+  end
+
+  %% Flows
+  SC --> CG --> COL
+  COL --> DID --> LRS
+  COL --> SYS --> LRS
+  LRS --> AGG --> ADB --> DC
+
+  %% Governance as controls
+  RB -. "Zugriff" .-> LRS
+  RB -. "Zugriff" .-> ADB
+  RET -. "Regeln" .-> LRS
+  AUD <-. "Zugriffe/Exporte" .-> DC