first commit!

prisma/schema.prisma

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+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model User {
+  id             String          @id @default(cuid())
+  username       String          @unique
+  passwordHash   String
+  balance        Float           @default(2000)
+  researchPoints Int             @default(1)
+  isAdmin        Boolean         @default(false)
+  createdAt      DateTime        @default(now())
+  updatedAt      DateTime        @updatedAt
+
+  positions      Position[]
+  trades         Trade[]
+  passwordResets PasswordReset[]
+}
+
+model PasswordReset {
+  id        String   @id @default(cuid())
+  token     String   @unique @default(uuid())
+  userId    String
+  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  expiresAt DateTime
+  used      Boolean  @default(false)
+  createdAt DateTime @default(now())
+
+  @@index([token])
+}
+
+model Hashtag {
+  id           String         @id @default(cuid())
+  tag          String         @unique // lowercase, no #
+  displayTag   String         // original case as entered
+  currentPrice Float          @default(0.25)
+  isActive     Boolean        @default(true)
+  // Consecutive zero-result count; after 3 failed updates the hashtag auto-deactivates
+  zeroCount    Int            @default(0)
+  lastUpdated  DateTime       @default(now())
+  createdAt    DateTime       @default(now())
+
+  priceHistory PriceHistory[]
+  positions    Position[]
+  trades       Trade[]
+
+  @@index([isActive, lastUpdated])
+}
+
+model PriceHistory {
+  id           String   @id @default(cuid())
+  hashtagId    String
+  hashtag      Hashtag  @relation(fields: [hashtagId], references: [id], onDelete: Cascade)
+  price        Float
+  postsPerHour Float
+  recordedAt   DateTime @default(now())
+
+  @@index([hashtagId, recordedAt])
+}
+
+model Position {
+  id           String       @id @default(cuid())
+  userId       String
+  user         User         @relation(fields: [userId], references: [id], onDelete: Cascade)
+  hashtagId    String
+  hashtag      Hashtag      @relation(fields: [hashtagId], references: [id])
+  shares       Float        @default(0)
+  positionType PositionType
+  avgBuyPrice  Float
+  createdAt    DateTime     @default(now())
+  updatedAt    DateTime     @updatedAt
+
+  @@unique([userId, hashtagId, positionType])
+  @@index([userId])
+  @@index([hashtagId])
+}
+
+model Trade {
+  id        String    @id @default(cuid())
+  userId    String
+  user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
+  hashtagId String
+  hashtag   Hashtag   @relation(fields: [hashtagId], references: [id])
+  type      TradeType
+  shares    Float
+  price     Float     // price per share at time of trade
+  total     Float     // cost/proceeds of the trade
+  profit    Float     @default(0) // realized P&L (for SELL trades)
+  createdAt DateTime  @default(now())
+
+  @@index([userId])
+  @@index([hashtagId])
+  @@index([createdAt])
+}
+
+enum PositionType {
+  LONG
+  SHORT
+}
+
+enum TradeType {
+  BUY_LONG
+  SELL_LONG
+  BUY_SHORT
+  SELL_SHORT
+}