docs: add CoherenceVectorStore integration

[dhirupandey]

Added Coherence VectorStore Integration

Dependencies: The integration has a dependency on coherence-client package. See langchain/libs/partners/coherence/pyproject.toml

Integration test added at langchain/libs/partners/coherence/tests/integration_tests/test_coherence_store.py. However they need Coherence server to be run in order to work

Added documentation notebook at at docs/docs/integrations/vectorstores/coherence.ipynb

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
langchain	Ready	Preview	Comment	Sep 12, 2025 9:33pm

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #32289 will improve performances by 15.04%

_{Comparing dhirupandey:master (d95802f) with master (338d3d2)}

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

⚡ 1 improvement
✅ 12 untouched

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	test_import_time[RunnableLambda]	560.7 ms	487.4 ms	+15.04%

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #32289 will not alter performance

_{Comparing dhirupandey:master (d95802f) with master (338d3d2)}

Summary

✅ 14 untouched

[mdrxy]

Hi thank you for the work so far. We are not adding new integrations to this monorepo, but instead to separate repositories. Would you be able to migrate this?

[dhirupandey]

Hi thank you for the work so far. We are not adding new integrations to this monorepo, but instead to separate repositories. Would you be able to migrate this?

Hi @mdrxy Where does this need to be migrated ? Can you provide details and instructions on how to do that.

[mdrxy]

Hi @dhirupandey, apologies for the delays. We've written new contributing guides that should hopefully address your question. Happy to answer any questions as they arise!