feat: centralize AI logic in @repo /ai-sdk, harmonize worker HTTP clients

Refactor: Technical Debt Repayment (Clean Dashboard, Strict Typing, Pino Logging, SQL Migration)

feat(ai): team building visual experience and persistence

feat: Genspark-Standard upgrade, MLOps audit fixes, and XAMLÉ branding

feat: sync all recent changes (AI, whatsapp, redis passwords, script fixes)

feat: implement AI document generation (mock, pdf, pptx) and worker integration