Add env hints

[alexb-palisaderesearch]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @alexb-palisaderesearch, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on improving the developer experience by providing clearer guidance for environment variable setup and correcting minor documentation formatting. It centralizes essential configuration information and streamlines the initial project setup process for new contributors, making it easier to get started with the project.

Highlights

• .env.example enhancements: The .env.example file has been significantly updated to include detailed comments, source URLs for various API keys (Logfire, Langfuse, OpenAI, Anthropic, Gemini, OpenRouter), and default settings for Logfire console logging. This provides clearer guidance for environment variable setup.
• README.md clarity: The README.md file now includes an explicit instruction under the 'Project setup' section to copy .env.example to .env and fill in the necessary keys, streamlining the initial project setup process.
• Markdown syntax fixes: Minor markdown syntax corrections were applied in README.md to ensure proper rendering of code blocks and HTML details tags.

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[gemini-code-assist]

Code Review

This pull request improves the developer experience by adding helpful hints and URLs to the .env.example file for obtaining necessary API keys. It also updates the README.md with clearer setup instructions and fixes some markdown formatting. My review includes suggestions to make required environment variables more explicit in .env.example to prevent setup issues for new developers, based on the project's stated goals in the README.

[sergey-koldyba]

GLTM. However, more structured .env.example will be appreciated

[sergey-koldyba]

Don't want to be a wet blanket, but can we have it more structured?

My usual recommendations are:

1. keep fields that are required uncommented
2. keep value snake_case for easier select-and-replace
3. have more meaningful comments and a bit better structure

My recommendation would look like similar to this:

# ---LOGFIRE---

#Environment identifier
LOGFIRE_ENVIRONMENT=hostname_username

# Logire tokens
# Get API Keys here: https://logfire-us.pydantic.dev/palisaderesearch/-/projects -> project settings -> API keys
LOGFIRE_WRITE_TOKEN=your_logfire_write_api_token
# LOGFIRE_READ_TOKEN=your_logfire_read_api_token

#Logfire logging settings
LOGFIRE_CONSOLE_VERBOSE=True
LOGFIRE_CONSOLE_MIN_LOG_LEVEL=debug

# ---LANGFUSE---
# Langfuse host URL
LANGFUSE_HOST=https://us.cloud.langfuse.com

# Langfuse tokens
# Get API Keys here: https://us.cloud.langfuse.com/ -> project settings -> API keys
LANGFUSE_SECRET_KEY=your_langfuse_secret_key
LANGFUSE_PUBLIC_KEY=your_langfuse_public_key

# Uncomment to disable Langfuse tracking entirely
# LANGFUSE_SKIP=1

# ---AI TOKENS---
# Use at least one AI API Key

# Get API Keys here: https://platform.openai.com/settings/organization/api-keys
# OPENAI_API_KEY=you_openai_api_token

# Get API Keys here: https://platform.claude.com/settings/keys
# ANTHROPIC_API_KEY=your_anthropic_api_key

# Get API Keys here: https://aistudio.google.com/app/apikey
# GEMINI_API_KEY=your_gemini_api_key

# Get API Keys here: https://openrouter.ai/settings/keys
# OPENROUTER_API_KEY=your_openrouter_api_key