documentation updates

[Charmunks]

No description provided.

[Copilot]

Pull Request Overview

This PR improves the environment configuration documentation by adding missing environment variables, enhancing the setup instructions with better formatting, and fixing a typo in the Airtable base ID example value.

• Adds NODE_ENV and FRONTEND_URL environment variables to example.env
• Restructures prerequisites sections with bullet-point formatting for better readability
• Adds comprehensive documentation for all required environment variables with descriptions
• Fixes typo in AIRTABLE_BASE_ID example from your=airtable-baseid to your-airtable-base-id

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
example.env	Adds NODE_ENV and FRONTEND_URL environment variables
README.md	Improves prerequisites formatting, reorganizes environment variable documentation with clear grouping and comments, fixes AIRTABLE_BASE_ID typo, and adds detailed documentation section for all required variables

Comments suppressed due to low confidence (1)

example.env:3

• The AIRTABLE_BASE_ID example value contains a typo. It should be 'your-airtable-base-id' (with hyphens) to match the corrected value in README.md line 58. The equal sign in 'your=airtable-baseid' should be a hyphen.

AIRTABLE_BASE_ID=your=airtable-baseid

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[Charmunks]

purely documentation change, self merging