feat(db): remove unique constraint on Organization.wabaId

fix(audit): resolve remaining TypeScript any types, string enums, and Json validation

fix(audit): resolve remaining minor technical debt issues

fix(audit): resolve 15 critical and major technical debt issues

feat(jour11+schema): Jour 11 photoUrl on TeamMember + audit doc updates

feat: Claude Sonnet 4.6 provider + Stripe billing automation

feat(agentic-week2-4): 5 major features — AI content generator, handoff, tags, soft-delete, SSE

feat(db): add EN/ES/PT values to Language enum

fix(bot): add missing Contact.language migration + fix onboarding blocking

refactor(debt): resolve all 10 technical debt items from audit

fix(prisma): add migration file for metaBusinessId + remove as-any casts

chore: finalize Sprint P2 & P3 optimizations, baseline prisma migrations, and update technical audit docs

feat: complete final technical debt polishing (structured logs, stripe tests, and automated migrations)

chore: execute Sprint 38 technical debt resolution (Type Safety, Zod validation, Vitest, Mock LLM extracted)