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

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Project	Deployment	Preview	Comments	Updated (UTC)
langchain	✅ Ready	Preview	Comment	Aug 12, 2025 5:47pm

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #32289 will not alter performance

_{Comparing dhirupandey:master (e82ec4d) with master (30d646b)}

⚠️ 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

✅ 13 untouched benchmarks

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #32289 will not alter performance

_{Comparing dhirupandey:master (e82ec4d) with master (30d646b)}

Summary

✅ 14 untouched benchmarks

[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.