feat: add Prisma schema (MySQL) and Docker Compose for db/redis

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

prisma/schema.prisma

@@ -0,0 +1,136 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "mysql"
+}
+
+enum UserRole {
+  admin
+  user
+}
+
+enum MeetingType {
+  instant
+  scheduled
+}
+
+enum MeetingStatus {
+  scheduled
+  active
+  ended
+}
+
+enum ParticipantRole {
+  host
+  co_host
+  participant
+}
+
+enum ParticipantStatus {
+  pending
+  admitted
+  denied
+  left
+}
+
+enum RecordingStatus {
+  in_progress
+  processing
+  completed
+  failed
+}
+
+model User {
+  id              Int       @id @default(autoincrement())
+  email           String    @unique
+  password        String
+  displayName     String    @map("display_name")
+  role            UserRole  @default(user)
+  emailVerifiedAt DateTime? @map("email_verified_at")
+  createdAt       DateTime  @default(now()) @map("created_at")
+  updatedAt       DateTime  @updatedAt @map("updated_at")
+
+  hostedMeetings     Meeting[]            @relation("MeetingHost")
+  meetingParticipant MeetingParticipant[]
+  notes              Note[]
+  startedRecordings  Recording[]          @relation("RecordingStartedBy")
+
+  @@map("users")
+}
+
+model Meeting {
+  id          Int           @id @default(autoincrement())
+  uuid        String        @unique
+  title       String
+  type        MeetingType
+  status      MeetingStatus @default(scheduled)
+  scheduledAt DateTime?     @map("scheduled_at")
+  hostUserId  Int           @map("host_user_id")
+  startedAt   DateTime?     @map("started_at")
+  endedAt     DateTime?     @map("ended_at")
+  createdAt   DateTime      @default(now()) @map("created_at")
+  updatedAt   DateTime      @updatedAt @map("updated_at")
+
+  host         User                 @relation("MeetingHost", fields: [hostUserId], references: [id])
+  participants MeetingParticipant[]
+  notes        Note[]
+  recordings   Recording[]
+
+  @@index([uuid])
+  @@map("meetings")
+}
+
+model MeetingParticipant {
+  id          Int               @id @default(autoincrement())
+  meetingId   Int               @map("meeting_id")
+  userId      Int?              @map("user_id")
+  guestName   String?           @map("guest_name")
+  identity    String
+  role        ParticipantRole   @default(participant)
+  status      ParticipantStatus @default(pending)
+  requestedAt DateTime          @default(now()) @map("requested_at")
+  admittedAt  DateTime?         @map("admitted_at")
+  leftAt      DateTime?         @map("left_at")
+
+  meeting Meeting @relation(fields: [meetingId], references: [id])
+  user    User?   @relation(fields: [userId], references: [id])
+
+  @@unique([meetingId, identity])
+  @@index([meetingId, status])
+  @@map("meeting_participants")
+}
+
+model Note {
+  id        Int      @id @default(autoincrement())
+  meetingId Int      @map("meeting_id")
+  userId    Int      @map("user_id")
+  content   String   @db.Text
+  createdAt DateTime @default(now()) @map("created_at")
+  updatedAt DateTime @updatedAt @map("updated_at")
+
+  meeting Meeting @relation(fields: [meetingId], references: [id])
+  user    User    @relation(fields: [userId], references: [id])
+
+  @@unique([meetingId, userId])
+  @@map("notes")
+}
+
+model Recording {
+  id               Int             @id @default(autoincrement())
+  meetingId        Int             @map("meeting_id")
+  egressId         String          @map("egress_id")
+  status           RecordingStatus @default(in_progress)
+  storagePath      String?         @map("storage_path")
+  fileSizeBytes    BigInt?         @map("file_size_bytes")
+  durationSeconds  Int?            @map("duration_seconds")
+  startedByUserId  Int             @map("started_by_user_id")
+  startedAt        DateTime        @default(now()) @map("started_at")
+  completedAt      DateTime?       @map("completed_at")
+
+  meeting   Meeting @relation(fields: [meetingId], references: [id])
+  startedBy User    @relation("RecordingStartedBy", fields: [startedByUserId], references: [id])
+
+  @@map("recordings")
+}