feat: add Prisma schema with User, Project, Module, Endpoint models

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

prisma/schema.prisma

@@ -0,0 +1,92 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model User {
+  id           String         @id @default(uuid())
+  email        String         @unique
+  passwordHash String?
+  name         String
+  avatarUrl    String?
+  createdAt    DateTime       @default(now())
+  updatedAt    DateTime       @updatedAt
+  oauthAccounts OAuthAccount[]
+  projects     Project[]
+}
+
+model OAuthAccount {
+  id                String   @id @default(uuid())
+  userId            String
+  provider          String
+  providerAccountId String
+  createdAt         DateTime @default(now())
+  user              User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@unique([provider, providerAccountId])
+}
+
+model Project {
+  id             String     @id @default(uuid())
+  userId         String
+  name           String
+  description    String?
+  baseUrl        String?
+  openApiSpec    Json
+  openApiVersion String
+  apiKeyHash     String
+  createdAt      DateTime   @default(now())
+  updatedAt      DateTime   @updatedAt
+  user           User       @relation(fields: [userId], references: [id], onDelete: Cascade)
+  modules        Module[]
+  endpoints      Endpoint[]
+}
+
+enum ModuleSource {
+  tag
+  path_prefix
+  manual
+}
+
+model Module {
+  id          String       @id @default(uuid())
+  projectId   String
+  name        String
+  description String?
+  sortOrder   Int          @default(0)
+  source      ModuleSource
+  createdAt   DateTime     @default(now())
+  updatedAt   DateTime     @updatedAt
+  project     Project      @relation(fields: [projectId], references: [id], onDelete: Cascade)
+  endpoints   Endpoint[]
+
+  @@index([projectId])
+}
+
+model Endpoint {
+  id          String   @id @default(uuid())
+  projectId   String
+  moduleId    String
+  method      String
+  path        String
+  summary     String?
+  description String?
+  operationId String?
+  parameters  Json     @default("[]")
+  requestBody Json?
+  responses   Json     @default("{}")
+  tags        String[] @default([])
+  deprecated  Boolean  @default(false)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+  project     Project  @relation(fields: [projectId], references: [id], onDelete: Cascade)
+  module      Module   @relation(fields: [moduleId], references: [id], onDelete: Cascade)
+
+  @@index([projectId])
+  @@index([moduleId])
+  @@index([projectId, moduleId])
+}