fix: update Discord invite links to correct URL

[rhowardstone]

Fixes #543

Updated all Discord community links from expired/incorrect URLs (discord.gg/claude-flow and discord.agentics.org) to the correct invite link as specified by maintainer: https://discord.com/invite/dfxmpwkG2D

Files Updated

• src/cli/help-text.js
• docs/INDEX.md (2 instances)
• docs/guides/USER_GUIDE.md
• docs/reference/AGENTS.md
• docs/api/API_DOCUMENTATION.md
• docs/development/DEVELOPMENT_WORKFLOW.md
• docs/development/DEPLOYMENT.md

Testing

• Verified all links point to the correct Discord server
• Confirmed no other Discord links remain in the codebase

🤖 Generated with Claude Code (Sonnet 4.5), checked and approved by rhowardstone

Co-Authored-By: Claude [email protected]