Enhance project setup with Prisma, new scripts, and dependencies; update README for clarity and add API routes; improve layout and styling for better user experience

prisma/schema.prisma

@@ -0,0 +1,89 @@
+// IA Gen Maturity Evaluator - Prisma Schema
+// SQLite for local dev; switch to Postgres for production
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "sqlite"
+  url      = env("DATABASE_URL")
+}
+
+model User {
+  id        String   @id @default(cuid())
+  email     String   @unique
+  name      String?
+  role      String   @default("evaluator") // evaluator | admin
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+model Template {
+  id          String   @id // "full-15"
+  name        String
+  dimensions  TemplateDimension[]
+  evaluations Evaluation[]
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+}
+
+model TemplateDimension {
+  id             String   @id @default(cuid())
+  templateId     String
+  template       Template @relation(fields: [templateId], references: [id], onDelete: Cascade)
+  slug             String   // "tools", "prompts", etc.
+  orderIndex       Int
+  title            String
+  rubric           String   // "1:X;2:Y;3:Z;4:A;5:B" or "1-5"
+  suggestedQuestions String? // JSON array: ["Q1", "Q2", "Q3"]
+  dimensionScores  DimensionScore[]
+
+  @@unique([templateId, slug])
+}
+
+model Evaluation {
+  id              String   @id @default(cuid())
+  candidateName   String
+  candidateRole   String
+  evaluatorName  String
+  evaluationDate DateTime
+  templateId     String
+  template       Template @relation(fields: [templateId], references: [id])
+  status         String   @default("draft") // draft | submitted
+  findings       String?  // auto-generated summary
+  recommendations String?
+  dimensionScores DimensionScore[]
+  auditLogs      AuditLog[]
+  createdAt      DateTime @default(now())
+  updatedAt      DateTime @updatedAt
+}
+
+model DimensionScore {
+  id             String   @id @default(cuid())
+  evaluationId   String
+  evaluation     Evaluation @relation(fields: [evaluationId], references: [id], onDelete: Cascade)
+  dimensionId    String
+  dimension      TemplateDimension @relation(fields: [dimensionId], references: [id], onDelete: Cascade)
+  score          Int?     // 1-5
+  justification  String?
+  examplesObserved String?
+  confidence     String?  // low | med | high
+  candidateNotes String?  // evaluator's notes from interview
+  createdAt      DateTime @default(now())
+  updatedAt      DateTime @updatedAt
+
+  @@unique([evaluationId, dimensionId])
+}
+
+model AuditLog {
+  id           String   @id @default(cuid())
+  evaluationId String
+  evaluation   Evaluation @relation(fields: [evaluationId], references: [id], onDelete: Cascade)
+  action       String   // created | updated | submitted | score_changed
+  field        String?
+  oldValue     String?
+  newValue     String?
+  userId       String?
+  createdAt    DateTime @default(now())
+}