fix(chroma): default to local profile and correct local port to 8000

[krishking02]

What

The Chroma vector store node defaults to cloud profile with port 8330. Both are wrong for the most common case — a developer running Chroma locally for the first time.

Problem

I ran into this while building a RAG pipeline during onboarding. After selecting Chroma in the RAG Chat template, the pipeline immediately failed with "could not connect to a Chroma server" because:

1. The default profile is cloud, which requires ChromaDB Cloud credentials most users don't have yet
2. The default local port is 8330, but ChromaDB's actual default is 8000

Both issues are silent — no error message tells you what to change.

Fix

• Default profile: cloud → local
• Default local port: 8330 → 8000
• Updated README schema table to match

Testing

Verified locally: after this change, a fresh RAG Chat pipeline with Chroma connects to a local chroma run instance on first try without any config changes.

Summary by CodeRabbit

• Bug Fixes
  • Updated the default local Chroma connection port to 8000.
  • Changed the default Chroma profile from cloud to local.

[github-actions]

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[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

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Run ID: 9d39f684-7cce-4b71-8e0f-9cdb08c0c237

📥 Commits

Reviewing files that changed from the base of the PR and between ec24643 and d6e0c5e.

📒 Files selected for processing (1)

• nodes/src/nodes/store_chroma/services.json

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📝 Walkthrough

Walkthrough

The Chroma service configuration changes the default local port from 8330 to 8000 and changes the default profile from cloud to local.

Changes

Chroma service defaults

Layer / File(s)	Summary
Local Chroma defaults nodes/src/nodes/store_chroma/services.json	The default vector.local.port changes to 8000. The default chroma.profile changes to local.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to d6e0c

This localized change corrects Chroma's default profile and local port for the common local-development setup, with no actionable merge-blocking risk remaining after normal checks and review.

Suggested reviewers: jmaionchi, rod-christensen, stepmikhaylov

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main changes to the Chroma default profile and local port.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

Warning

There were issues while running some tools. Please review the errors and either fix the tool's configuration or disable the tool if it's a critical failure.

🔧 Biome (2.5.6)

nodes/src/nodes/store_chroma/services.json

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