ContextA multi-tenant SaaS foundation for tattoo studios: onboarding, booking, CRM, dashboard operations, audit logs and future assistant workflows.ProblemStudio operations usually scatter across messages, calendars, payment links and notebooks. Ink Flow frames that mess as a calm command center.ConstraintsUse only verified local evidence, keep secrets out, avoid invented metrics and preserve the project direction already present in the repository.My roleConceived and directed the product, defined the SaaS workflow, shaped the studio data model, directed AI-assisted development and verified the build path.Product decisionsBuilt for Tattoo studios and artists who need one organized operating layer for leads, appointments, clients, deposits and follow-up. Core features: Tenant-safe studio model, Auth and onboarding, Dashboard shell, Requests, clients, calls and payments areas, Backup and recovery planning.AI workflowAI is intentionally staged: placeholders define assistant, voice and messaging pathways while keeping keys and customer data out of the client.Visual processDark premium SaaS interface, compact navigation, restrained tattoo-studio tone and custom display typography decisions documented with font licensing checks.Technical architectureStatic and server-rendered Next.js shell with Supabase helpers, RLS migrations, storage policies, audit tables and future integration slots.IterationsThe inspected projects show an iterative pattern: mock first, shape the workflow, add integration placeholders, then verify build behavior before real credentials or customer data enter the system.Failures or challengesThe safe portfolio version excludes unverified claims, private keys, customer/account information and any feature that exists only as a future idea.Final solutionA multi-tenant SaaS foundation for tattoo studios: onboarding, booking, CRM, dashboard operations, audit logs and future assistant workflows.Verified outcomeVerified from project docs: install, lint, typecheck and production build passed during the Phase 1 foundation.What I would improve nextConnect real pilot studio data, confirm production language, add live AI assistant through server-side functions and finish payments/calendar integrations.Sanitized / excludedExcluded Supabase keys, service role details, storage credentials, payment setup and any pilot/customer data.