ee9357aa31
api/dataflow.py: node-link landscape (generators->sources->CDC/Kafka->sinks,
HDFS->Iceberg, sources->curated_masked) with live overlays (movement run state,
CDC volume, Trino counts) and PII overlay. api/pii_catalog.py: column PII
classification via Trino information_schema (OM-ready). Endpoints /api/dataflow,
/api/dataflow/{id}/run, /api/pii.