feat: OpenLineage consumer improvements - versioning, column lineage and tree

[ntkathole]

What this PR does / why we need it:

Summary

Extends the Feast OpenLineage consumer with spec-compliant facet extraction,
adds dataset versioning, and enriches SavedDataset producer events.

Consumer improvements

• Dataset versioning — new openlineage_dataset_versions table; a version
  snapshot is created for each output dataset on every COMPLETE RunEvent
• Column-level lineage — parses ColumnLineageDatasetFacet, stores
  field-to-field mappings in openlineage_column_lineage table
• Ownership indexing — extracts OwnershipDatasetFacet into queryable
  owner_name/owner_type columns and a dedicated openlineage_dataset_ownership
  table (supports multiple owners per dataset)
• Lifecycle tracking — extracts LifecycleStateChangeDatasetFacet
  (CREATE/ALTER/DROP) into lifecycle_state column on datasets
• Execution hierarchy — parses ParentRunFacet to populate parent_run_id
  and root_run_id on runs; adds run-tree query API

New REST API endpoints

Endpoint	Description
GET /datasets/{ns}/{name}/versions	Paginated version history
GET /datasets/{ns}/{name}/columns	Column-level lineage
GET /runs/{run_id}/tree	Full execution tree

Ownership, lifecycle, version, and owner fields are returned inline on
dataset nodes in the existing full-graph response — no separate endpoints
needed.

SavedDataset producer

emit_saved_dataset_lineage() now emits an additional DatasetEvent with:

• SymlinksDatasetFacet linking logical name → physical storage URI
• OwnershipDatasetFacet from tags/owner field
• LifecycleStateChangeDatasetFacet (CREATE)

UI

Added version, lifecycle, and owner badges to the OpenLineage graph
node detail panel (inline with existing producer/type badges).

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

❌ Patch coverage is 67.12329% with 96 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.32%. Comparing base (787845a) to head (3ea5ee4).

Files with missing lines	Patch %	Lines
sdk/python/feast/openlineage/emitter.py	5.66%	50 Missing ⚠️
sdk/python/feast/openlineage/processor.py	69.09%	10 Missing and 7 partials ⚠️
sdk/python/feast/openlineage/consumer.py	28.57%	15 Missing ⚠️
sdk/python/feast/openlineage/store.py	90.78%	6 Missing and 8 partials ⚠️
❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6834      +/-   ##
==========================================
+ Coverage   47.18%   47.32%   +0.14%     
==========================================
  Files         419      419              
  Lines       51964    52253     +289     
  Branches     7548     7605      +57     
==========================================
+ Hits        24521    24731     +210     
- Misses      25689    25754      +65     
- Partials     1754     1768      +14     

Flag	Coverage Δ
go-feature-server	30.58% <ø> (ø)
python-unit	48.64% <67.12%> (+0.14%)	⬆️

Files with missing lines	Coverage Δ
sdk/python/feast/openlineage/models.py	100.00% <100.00%> (ø)
sdk/python/feast/openlineage/store.py	87.35% <90.78%> (+3.45%)	⬆️
sdk/python/feast/openlineage/consumer.py	64.14% <28.57%> (-4.23%)	⬇️
sdk/python/feast/openlineage/processor.py	84.07% <69.09%> (-1.65%)	⬇️
sdk/python/feast/openlineage/emitter.py	7.41% <5.66%> (-0.20%)	⬇️

... and 1 file with indirect coverage changes

---

Continue to review full report in Codecov by Harness.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 787845a...3ea5ee4. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.