Update langgraph-python example to LangGraph 1.x - #84
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LangChain and LangGraph: adopted the existing community PRs e2b-dev#83 (langchain 1.x) and e2b-dev#84 (langgraph 1.x) rather than redoing that work, then re-applied this branch's e2b pin bump and model retarget on top and regenerated both lockfiles. Mistral v0 -> v2 (codestral-code-interpreter-js and -python): MistralClient -> Mistral new MistralClient() -> new Mistral({ apiKey }) client.chat(...) -> client.chat.complete(...) from mistralai.client -> from mistralai message.content is now string | ContentChunk[], so the JS example joins text chunks instead of assuming a string. Firecrawl v0 -> v4 (firecrawl-scrape-and-analyze-airbnb-data and claude-visualize-website-topics): FirecrawlApp -> Firecrawl scrapeUrl(url, {pageOptions, extractorOptions}) -> scrape(url, {formats:[{type:'json',schema}]}) result.data['llm_extraction'] -> result.json crawl_url(url, params={...}) -> crawl(url, limit=...) crawl result is now a CrawlJob whose .data holds Document models, so the Python notebook uses model_dump() instead of dict iteration. Also cleared one notebook's captured pip-install log, which was from a 2024 run and contradicted the versions the notebook now installs. All four poetry lockfiles and all four uv lockfiles regenerated. nextjs-code-interpreter is deliberately left on Vercel AI SDK v3 and its openai pin reverted to ^4.42.0 so it still installs and runs. Going to v5+ means replacing OpenAIStream / StreamingTextResponse / experimental_onToolCall with streamText, and changing the useChat client alongside it. That has to be run in a browser to be trusted, so it is out of scope here and now documented in the example's README.
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Upgrades example to LangGraph 1.x with simplified syntax and modern patterns, making it easier for LangGraph users to integrate with E2B.