Update compose; remove prisma schema

src/schema.prisma

@@ -1,26 +0,0 @@
-// schemas/prisma.schema
-generator client {
-  provider = "prisma-client-js"
-}
-
-datasource db {
-  provider = "postgresql" // or "mysql" or "sqlite" depending on your database
-  url      = env("DATABASE_URL")
-}
-
-model User {
-  id       Int       @id @default(autoincrement())
-  githubId Int       @unique @map("github_id")
-  email    String    @unique
-  username String
-  sessions Session[]
-
-  @@index([githubId])
-}
-
-model Session {
-  id        String   @id
-  userId    Int      @map("user_id")
-  expiresAt DateTime @map("expires_at")
-  user      User     @relation(fields: [userId], references: [id])
-}