phase 14-15: docker build validation and helm deployment

dashboards/operational/README.md

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+# Operational Dashboard
+
+Superset dashboard definitions for Stonks Oracle operational monitoring.
+
+## Dashboards
+- Ingestion Throughput — documents ingested per hour by source type, success/failure rates
+- Model Extraction Quality — extraction success rates, latency percentiles, validation failures
+- Source Coverage Gaps — symbols missing source types, stale sources with no recent data
+
+## Data Sources
+These dashboards query the Query API operational endpoints:
+- `/api/ops/ingestion/throughput` — time-bucketed ingestion metrics
+- `/api/ops/ingestion/summary` — aggregate ingestion stats
+- `/api/ops/model/failures` — recent extraction failures
+- `/api/ops/model/performance` — model performance summary
+- `/api/ops/pipeline/health` — pipeline stage health
+- `/api/ops/sources/coverage-gaps` — source coverage analysis
+
+## Setup
+Import the dashboard JSON files into Superset via the Superset UI or CLI.
+The dashboards use the Trino `lakehouse` catalog as their primary datasource,
+with supplementary queries against the Query API for real-time operational data.