Adds YAML-based bulk import/export to MetricRepository, supporting
list-wrapped and plain-dict YAML formats, table→table_name field
mapping, and sql_by_* → sql_variants collection (and reverse on export).
All 24 tests pass.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Implements MetricRepository following the table_registry pattern — raw SQL,
dict returns, ON CONFLICT upsert, and json.dumps for sql_variants/validation.
Includes 18 tests covering create, read, list, update, delete, find_by_table,
find_by_synonym, and get_table_map.
- Add get_metric_by_fqn() to OpenMetadataClient
- Add get_metrics() to CatalogEnricher with TTL caching
- Implement _parse_om_metric() to extract category/grain from OpenMetadata tags
- Implement _load_metrics_from_catalog() to fetch and categorize metrics
- Implement _build_om_metric_detail() to convert OpenMetadata format to MetricParser JSON
- Add /api/catalog/metrics/<fqn> endpoint for metric detail modal
- Update _load_metrics_data() to prefer catalog over YAML fallback
- Update metric_modal.js to route catalog:{fqn} to catalog API endpoint
- Delete 10 demo YAML files from docs/metrics/
- Replace metric tests with new unit tests for catalog parsing functions (19 tests)
Catalog metrics provide single source of truth vs maintaining demo YAML files.
UI remains unchanged - only data source changes from YAML to OpenMetadata catalog.
