Add guided operational onboarding wizard

[sigilabcodex]

Summary

Introduces a guided and resumable operational onboarding flow while preserving the existing admin onboarding page as a status overview.

Highlights

• Adds /admin/onboarding guided entry and introduction.
• Adds one-screen-per-chapter onboarding routes.
• Derives readiness from real business data.
• Preserves explicit skipped states.
• Removes generic manual “Mark ready” behavior.
• Resumes the next incomplete chapter after owner/admin login.
• Keeps the wizard optional and allows users to return to normal operations.
• Separates local development warnings from actual demo-workspace labeling.
• Adds Spanish, English, and Portuguese onboarding copy.
• Adds focused onboarding state and routing tests.

Routes

• /admin/onboarding
• /admin/onboarding/intro
• /admin/onboarding/[chapter]
• /admin/onboarding/summary

The existing /admin/setup/onboarding remains the administrative status dashboard.

Verification

• npm run typecheck
• npm run build

Both passed locally.

Deferred

• Dedicated shift and delivery configuration models.
• CSV import engines and downloadable templates.
• Embedding every setup form directly inside the wizard.