Adds two new tool nodes under LangChain > Tools:

[umerkay]

Summary

Adds two new tool nodes under LangChain > Tools:

Olostep Search — calls POST /v1/searches, returns ranked results
with titles, descriptions, and URLs. Alternative to BraveSearch/Tavily/Serper.

Olostep Scraper — uses the Olostep Node.js SDK to fetch and return
clean Markdown from any URL. Alternative to Web Browser node.

Both nodes use the new olostepApi credential.

Screenshots

[attach screenshot of nodes in Flowise canvas]

Checklist

• pnpm build passes
• Both nodes render correctly in UI
• Credentials field works
• Tested with a live OLOSTEP_API_KEY

[gemini-code-assist]

Code Review

This pull request introduces integration with Olostep by adding the OlostepApi credential, OlostepScraper and OlostepSearch tools, and adding the olostep dependency. Feedback suggests validating that the API key is present in both tools to prevent runtime errors, removing the unused and uninitialized description property in OlostepApi to avoid TypeScript compilation issues, and pinning the olostep dependency to a safer caret range (e.g., ^0.1.0) for build stability.

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