ContentCloud v0.12.0

[wutongci]

Summary

• add the public ContentCloud Content Work OS marketing homepage and visual assets
• move the authenticated console entry to /workspace while preserving project, team, docs, admin, and login return paths
• synchronize CLI, Web, npm, Plugin, MCP, Bootstrap, Environment Profile, and Server/Worker release metadata at 0.12.0
• add the v6 product, runtime, website, migration, and acceptance roadmap

Validation

• make check
• go test -race ./...
• pnpm --dir web test
• node scripts/evaluate-plugin.mjs
• node scripts/validate-plugin-release.mjs
• node --check packages/contentcloud/bin/contentcloud.js