feat(frontend): build guided onboarding wizard wrapper

[mijinummi]

Description

This PR addresses Issue #826, implementing an multi-step /onboarding workflow setup guide to clean up the blank-slate user experience.

Key Modifications

• Dynamic Qualification Barriers: Appended checking loops verifying current profile age (<24h) and active asset arrays to automatically trigger onboarding wrappers when appropriate.
• Multipart Stream Integration: Tied the Step 2 upload interaction layer directly to the real POST /api/documents/upload API endpoint.
• Persistent Compliance Tokens: Wired explicit state tokens inside localStorage mapping arrays to guarantee that a completion event or an intentional bypass action completely blocks the onboarding wizard from showing again.

Closes #826

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