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

feat: stabilize AI engine, harden Zod schemas, and implement UX guardrails

fix(tsconfig): override base with Node.js backend settings (CommonJS, node moduleResolution)

feat(docker): bypass build issues and run directly with tsx

Initial commit: Monorepo setup with React+Vite, Fastify, Prisma, and Docker Compose