docs: make Kest docs workspace-first

[canadaell]

Summary

• Added docs deployment workflow with Mintlify validation and guarded deploy trigger.
• Added missing CI, Flow Authoring, Assertions & Variables, Local Bridge, and Troubleshooting docs in English and Chinese.
• Cleaned existing MDX guides to use workspace-first terminology and Kest Cloud Sync wording.
• Renamed the collaboration guide from project to workspace and updated navigation.
• Regenerated the OpenAPI/API Reference as workspace-first, including workspace CLI token schemas and /v1/workspaces routes.

Notes

• The old /workflows/project-collaboration docs URL was renamed to /workflows/workspace-collaboration. No redirect file was added because repo-level Mintlify redirects were not verified here.
• docs.kest.dev deployment still depends on the Mintlify dashboard repo/root/branch configuration and GitHub secrets MINTLIFY_API_KEY and MINTLIFY_PROJECT_ID.

Validation

• node scripts/check-workspace-terminology.mjs
• git diff --check
• node docs-site/scripts/generate-openapi.mjs
• rg -n "Project|Projects|/v1/projects|project-scoped|platform_project_id" docs-site
• node -e "JSON.parse(require('fs').readFileSync('docs-site/docs.json','utf8'))"
• cd docs-site && mint validate

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Project	Deployment	Actions	Updated (UTC)
kest	Ready	Preview, Comment	Jun 7, 2026 6:53pm