feat(ingestion/montecarlo): add Monte Carlo connector

[alokr-dhub]

Summary

• Adds a new DataHub ingestion source for Monte Carlo, a data observability platform
• Ingests Monte Carlo monitors and custom SQL rules as DataHub Assertions (CUSTOM type), with native Monte Carlo type/resource/dimension preserved in customProperties
• Ingests Monte Carlo alerts and incidents as AssertionRunEvent failures, making observability status visible on the dataset Validation tab
• MCON → dataset URN resolution via getTable + user-supplied connection_to_platform_map, with per-MCON caching

Changes

Area	Files
Source	src/datahub/ingestion/source/montecarlo/
Integration tests	tests/integration/montecarlo/
Unit tests	tests/unit/montecarlo/
Docs	docs/sources/montecarlo/
Platform bootstrap	bootstrap_mcps/data-platforms.yaml, bootstrap_mcps.yaml
Logo	datahub-web-react/src/images/montecarlologo.png
Registry	autogenerated/connector_registry/datahub.json
Dependencies	setup.py, constraints.txt, pyproject.toml, uv.lock

Test plan

• Unit tests: MCON resolution, assertion building, run-event construction
• Integration tests: golden-file comparison for OSS and cloud-entity paths
• Docs: ### Overview, ### Prerequisites, ### Capabilities, ### Limitations, ### Troubleshooting all present

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 89.71292% with 43 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
.../src/datahub/ingestion/source/montecarlo/client.py	86.48%	15 Missing ⚠️
.../src/datahub/ingestion/source/montecarlo/source.py	78.26%	15 Missing ⚠️
...c/datahub/ingestion/source/montecarlo/assertion.py	91.42%	9 Missing ⚠️
...tahub/ingestion/source/montecarlo/mcon_resolver.py	94.11%	4 Missing ⚠️

📢 Thoughts on this report? Let us know!

[codecov]

Bundle Report

Changes will increase total bundle size by 48.2kB (0.21%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
datahub-react-web-esm	23.55MB	48.2kB (0.21%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: datahub-react-web-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
assets/index-*.js	2.16kB	8.85MB	0.02%
assets/montecarlologo-*.png (New)	46.04kB	46.04kB	100.0% 🚀

Files in assets/index-*.js:

• ./src/app/ingestV2/source/builder/constants.ts → Total Size: 8.91kB

• ./src/app/entityV2/shared/tabs/Dataset/Validations/assertion/profile/summary/utils.tsx → Total Size: 14.79kB

• ./src/images/montecarlologo.png → Total Size: 50 bytes

• ./src/app/entityV2/shared/tabs/Dataset/Validations/CustomAssertionDescription.tsx → Total Size: 1.15kB

• ./src/app/entityV2/shared/tabs/Dataset/Validations/DatasetAssertionLogicModal.tsx → Total Size: 447 bytes

• ./src/app/ingest/source/builder/sources.json → Total Size: 43.21kB

• ./src/app/ingestV2/source/builder/sources.json → Total Size: 48.22kB