extend the cli provider checks

[emrgnt-cmplxty]

🚀	This description was created by Ellipsis for commit b27993d

Summary:

Extended CLI provider checks and updated various files to support additional LLM providers, improve error handling, and rename certain classes and functions for consistency.

Key points:

• Updated compose.yaml to include environment variables for multiple LLM providers (OpenAI, Anthropic, Azure, Google Vertex AI, AWS Bedrock, Groq, Cohere, Anyscale).
• Changed model name in r2r.json and r2r/base/abstractions/llm.py from gpt-4o to openai/gpt-4o.
• Renamed rag_assistant to rag_agent in r2r/main/abstractions.py, r2r/main/assembly/builder.py, r2r/main/assembly/factory.py, and r2r/main/services/retrieval_service.py.
• Added check_llm_reqs function in r2r/cli/utils/docker_utils.py to validate environment variables for LLM providers.
• Updated r2r/providers/embeddings/litellm.py and r2r/providers/embeddings/ollama.py to improve error handling by raising R2RException with specific error messages.
• Modified r2r/providers/prompts/defaults.jsonl to rename rag_assistant prompt to rag_agent.

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[ellipsis-dev]

👍 Looks good to me! Reviewed everything up to b27993d in 1 minute and 4 seconds

More details

• Looked at 621 lines of code in 12 files
• Skipped 1 files when reviewing.
• Skipped posting 1 drafted comments based on config settings.

1. r2r/providers/prompts/defaults.jsonl:13

• Draft comment:
  The renaming from rag_assistant to rag_agent should be consistently applied across all files. Ensure all references in the codebase are updated to avoid reference errors.

This comment applies to all instances across the codebase where rag_assistant might still be used.

• Reason this comment was not posted:
  Confidence of 0% on close inspection, compared to threshold of 50%.

Workflow ID: wflow_K6plmn0IdTOJiHfd

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