Re-add the Discord badge (5 READMEs) and an issue-template contact removed
in 8346def, now pointing at the org-controlled HKUDS community server
(discord.gg/6TdQnT5xcF, guild 1296348098003734629, ~1.9k members) — the same
server linked from the HKUDS org profile and LightRAG — instead of the
compromised invite. Keeps GitHub Discussions as a second contact.
The discord.gg/2vDYc2w5 invite (in all 5 READMEs and the issue-template
contact links) resolves to a "Vibe-Trading" Discord server we no longer
control. It runs a fake Collab.Land wallet "verification" via
collab.layers-land.com — a throwaway domain registered 2026-06-18 — that
phishes users' crypto wallets. Remove every public pointer to it and replace
the issue-template community link with GitHub Discussions.
- CONTRIBUTING.md with dev setup, code standards, and difficulty-tiered roadmap
- GitHub issue templates (bug report + feature request) with YAML forms
- README: add Contributing section with contribution areas table