feat(masking): mask_to_curated DAG + OpenMetadata lineage + versioned OM artifacts

- deploy/airflow/mask_to_curated_dag.py: Trino-SQL masking (hash/redact/generalize)
  of PII from postgres/mysql sources into iceberg.curated_masked.* (verified:
  14k+11k masked rows, all PII masked).
- OM source->masked lineage edges created; curated tables cataloged.
- Version OM compose + ingestion configs + om_api helper under deploy/openmetadata.

deploy/openmetadata/ingest/pg_classify.yaml

@@ -0,0 +1,35 @@
+source:
+  type: postgres
+  serviceName: atc_postgres
+  serviceConnection:
+    config:
+      type: Postgres
+      username: mo
+      authType:
+        password: Dell2026!
+      hostPort: 10.0.21.51:5432
+      database: postgres
+  sourceConfig:
+    config:
+      type: AutoClassification
+      enableAutoClassification: true
+      storeSampleData: true
+      confidence: 80
+      schemaFilterPattern:
+        includes:
+          - public
+      tableFilterPattern:
+        includes:
+          - sales_orders
+processor:
+  type: orm-profiler
+  config: {}
+sink:
+  type: metadata-rest
+  config: {}
+workflowConfig:
+  openMetadataServerConfig:
+    hostPort: http://openmetadata-server:8585/api
+    authProvider: openmetadata
+    securityConfig:
+      jwtToken: "__JWT__"