feat: lineage and usage visualization

[qf-jonathan]

SUMMARY

This PR introduces a comprehensive lineage visualization feature that allows users to explore data relationships across datasets, charts, and dashboards using interactive Sankey diagrams.

Three Lineage Perspectives:

1. Dataset Lineage: Shows upstream database and downstream charts/dashboards that use the dataset
2. Chart Lineage: Displays the complete data pipeline from database → dataset → chart → dashboards
3. Dashboard Lineage: Reveals all upstream databases, datasets, and charts feeding into a dashboard

Implementation:

• Backend: Three new REST API endpoints (/api/v1/lineage/{dataset|chart|dashboard}/<id>) with proper permissions and comprehensive unit tests
• Frontend: LineageView component with ECharts Sankey chart, API hooks, and LineageModal for reusable display across the application

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

lineage-demo.mp4

TESTING INSTRUCTIONS

View Dataset Lineage:

1. Navigate to Data → Datasets
2. Click on any dataset to open the edit dialog
3. Click the Lineage tab
4. Verify you see a Sankey diagram showing the database, dataset, and all charts/dashboards using it
5. Click on any node in the diagram and verify details appear at the bottom
6. Click Close to dismiss the details panel

View Chart Lineage:

1. Navigate to Charts
2. Click the three-dot menu (⋮) on any chart card
3. Select View Lineage
4. Verify the modal shows the data flow: database → dataset → chart → dashboards
5. Click on the chart node and click Open Chart to verify navigation works
6. Alternatively, open any chart in Explore view, click the header menu (⋮), and select View Lineage

View Dashboard Lineage:

1. Navigate to Dashboards
2. In dashboard edit mode, click the three-dot menu (⋮) on any dashboard card
3. Select View Lineage
4. Verify the diagram shows all databases, datasets, and charts feeding into the dashboard
5. Click on a dashboard node and click Open Dashboard to verify navigation
6. Alternatively, open any dashboard, click the header menu (⋮), and select View Lineage

Test Interactive Features:

• Click different nodes and verify the details panel updates with correct information
• Verify database and dataset nodes show only a Close button
• Verify chart and dashboard nodes show both Open and Close buttons
• Verify the legend at the top matches the node colors in the diagram

ADDITIONAL INFORMATION

• Changes UI
• Introduces new feature or API
• Has associated issue:
• Required feature flags:
• Includes DB Migration
• Removes existing feature or API

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[codecov]

Codecov Report

❌ Patch coverage is 70.62147% with 52 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.61%. Comparing base (e10237f) to head (c2c78b8).
⚠️ Report is 11 commits behind head on master.

Files with missing lines	Patch %	Lines
superset/datasets/api.py	24.00%	19 Missing ⚠️
superset/charts/api.py	25.00%	18 Missing ⚠️
superset/dashboards/api.py	31.81%	15 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #37701       +/-   ##
===========================================
+ Coverage        0   43.61%   +43.61%     
===========================================
  Files           0      646      +646     
  Lines           0    49650    +49650     
  Branches        0     5560     +5560     
===========================================
+ Hits            0    21655    +21655     
- Misses          0    27696    +27696     
- Partials        0      299      +299     

Flag	Coverage Δ
hive	41.89% <70.62%> (?)
presto	41.91% <70.62%> (?)
python	43.61% <70.62%> (?)
unit	100.00% <ø> (?)

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[Vitor-Avila]

Really cool!