[Explero]

Summary

• rename the GitHub project and documentation to Research Trellis
• publish future packages as research-trellis and research-trellis-core
• add research-trellis as the primary command while retaining trellis and tl aliases
• update CI, release checks, migration metadata, and package smoke tests

Verification

• pnpm lint
• pnpm typecheck
• pnpm test (1631 tests)
• pnpm build
• pnpm hermes:preflight
• packed core and CLI verification
• local tarball install with all three commands and package exports
• mkdocs build --strict
• manifest continuity and secret-pattern checks