Write a Next.js Server Action with error handling

Write a Next.js Server Action in TypeScript for handling [describe action, e.g., user profile updates]. The action must: 1. Validate incoming data using a Zod schema. 2. Perform authentication verification (assume a helper getSession() is available). 3. Perform database operations using Prisma. 4. Handle all exceptions and return a consistent response object: { success: true, data: ... } or { success: false, error: 'User-friendly message', validationErrors: [...] }. 5. Call revalidatePath or revalidateTag to refresh cache where appropriate. Provide the full file code.