Add a Cite Us section to the README with BibTeX citation info, and
align it with docs/citation.md (author/organization: Semantica, 2026).
Update LICENSE and docs/project-license.md copyright holder to
Semantica, and replace the stale Hawksight-AI GitHub org slug with
semantica-agi across READMEs, plugin manifests, cookbook notebooks,
and GitHub templates.
- Remove email addresses from support, security, contributing, and community docs
- Replace email contacts with GitHub Issues and Security Advisories
- Add discussion templates for Q&A, Ideas, Showcase, and General discussions
- Update SUPPORT.md with Discussions section
KaifAhmad1