fix: sync MCP schema exactly with memento-note (full copy)

Copy all models used by MCP tools with every field, relation, and
index from memento-note/prisma/schema.prisma. No more guessing
which relations are needed — it's an exact subset.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

mcp-server/prisma/schema.prisma

@@ -1,3 +1,9 @@
+// ============================================================================
+// MCP Server Schema — exact copy from memento-note (source of truth)
+// Only includes models used by MCP tools.
+// Do NOT modify independently — always sync with memento-note/prisma/schema.prisma
+// ============================================================================
+
 generator client {
   provider      = "prisma-client-js"
   output        = "../node_modules/.prisma/client"
@@ -9,6 +15,68 @@ datasource db {
   url      = env("DATABASE_URL")
 }
 
+// ── Core models (used by MCP tools) ─────────────────────────────────────────
+
+model User {
+  id                 String              @id @default(cuid())
+  name               String?
+  email              String              @unique
+  emailVerified      DateTime?
+  password           String?
+  role               String              @default("USER")
+  image              String?
+  theme              String              @default("light")
+  cardSizeMode       String              @default("variable")
+  resetToken         String?             @unique
+  resetTokenExpiry   DateTime?
+  createdAt          DateTime            @default(now())
+  updatedAt          DateTime            @updatedAt
+  accounts           Account[]
+  aiFeedback         AiFeedback[]
+  labels             Label[]
+  memoryEchoInsights MemoryEchoInsight[]
+  notes              Note[]
+  sentShares         NoteShare[]         @relation("SentShares")
+  receivedShares     NoteShare[]         @relation("ReceivedShares")
+  notebooks          Notebook[]
+  sessions           Session[]
+  aiSettings         UserAISettings?
+}
+
+model Notebook {
+  id        String   @id @default(cuid())
+  name      String
+  icon      String?
+  color     String?
+  order     Int
+  userId    String
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+  labels    Label[]
+  notes     Note[]
+  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@index([userId, order])
+  @@index([userId])
+}
+
+model Label {
+  id         String    @id @default(cuid())
+  name       String
+  color      String    @default("gray")
+  notebookId String?
+  userId     String?
+  createdAt  DateTime  @default(now())
+  updatedAt  DateTime  @updatedAt
+  user       User?     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  notebook   Notebook? @relation(fields: [notebookId], references: [id], onDelete: Cascade)
+  notes      Note[]    @relation("LabelToNote")
+
+  @@unique([notebookId, name])
+  @@index([notebookId])
+  @@index([userId])
+}
+
 model Note {
   id                  String              @id @default(cuid())
   title               String?
@@ -42,7 +110,22 @@ model Note {
   language            String?
   languageConfidence  Float?
   lastAiAnalysis      DateTime?
+  aiFeedback          AiFeedback[]
+  memoryEchoAsNote2   MemoryEchoInsight[] @relation("EchoNote2")
+  memoryEchoAsNote1   MemoryEchoInsight[] @relation("EchoNote1")
+  notebook            Notebook?           @relation(fields: [notebookId], references: [id])
+  user                User?               @relation(fields: [userId], references: [id], onDelete: Cascade)
+  shares              NoteShare[]
+  labelRelations      Label[]             @relation("LabelToNote")
   noteEmbedding       NoteEmbedding?
+
+  @@index([isPinned])
+  @@index([isArchived])
+  @@index([trashedAt])
+  @@index([order])
+  @@index([reminder])
+  @@index([userId])
+  @@index([userId, notebookId])
 }
 
 model NoteEmbedding {
@@ -55,49 +138,28 @@ model NoteEmbedding {
   @@index([noteId])
 }
 
-model Notebook {
+model NoteShare {
   id          String    @id @default(cuid())
-  name      String
+  noteId      String
-  icon      String?
-  color     String?
-  order     Int
   userId      String
+  sharedBy    String
+  status      String    @default("pending")
+  permission  String    @default("view")
+  notifiedAt  DateTime?
+  respondedAt DateTime?
   createdAt   DateTime  @default(now())
   updatedAt   DateTime  @updatedAt
-  notes     Note[]
+  sharer      User      @relation("SentShares", fields: [sharedBy], references: [id], onDelete: Cascade)
-  labels    Label[]
+  user        User      @relation("ReceivedShares", fields: [userId], references: [id], onDelete: Cascade)
-}
+  note        Note      @relation(fields: [noteId], references: [id], onDelete: Cascade)
 
-model Label {
+  @@unique([noteId, userId])
-  id         String    @id @default(cuid())
-  name       String
-  color      String    @default("gray")
-  notebookId String?
-  userId     String?
-  createdAt  DateTime  @default(now())
-  updatedAt  DateTime  @updatedAt
-  notebook   Notebook? @relation(fields: [notebookId], references: [id], onDelete: Cascade)
-
-  @@unique([notebookId, name])
-  @@index([notebookId])
   @@index([userId])
+  @@index([status])
+  @@index([sharedBy])
 }
 
-model User {
+// ── Supporting models (used for auth, AI features, config) ──────────────────
-  id                 String              @id @default(cuid())
-  name               String?
-  email              String              @unique
-  emailVerified      DateTime?
-  password           String?
-  role               String              @default("USER")
-  image              String?
-  theme              String              @default("light")
-  cardSizeMode       String              @default("variable")
-  resetToken         String?             @unique
-  resetTokenExpiry   DateTime?
-  createdAt          DateTime            @default(now())
-  updatedAt          DateTime            @updatedAt
-}
 
 model Account {
   userId            String
@@ -113,6 +175,7 @@ model Account {
   session_state     String?
   createdAt         DateTime @default(now())
   updatedAt         DateTime @updatedAt
+  user              User     @relation(fields: [userId], references: [id], onDelete: Cascade)
 
   @@id([provider, providerAccountId])
 }
@@ -123,6 +186,7 @@ model Session {
   expires      DateTime
   createdAt    DateTime @default(now())
   updatedAt    DateTime @updatedAt
+  user         User     @relation(fields: [userId], references: [id], onDelete: Cascade)
 }
 
 model VerificationToken {
@@ -133,21 +197,6 @@ model VerificationToken {
   @@id([identifier, token])
 }
 
-model NoteShare {
-  id          String    @id @default(cuid())
-  noteId      String
-  userId      String
-  sharedBy    String
-  status      String    @default("pending")
-  permission  String    @default("view")
-  notifiedAt  DateTime?
-  respondedAt DateTime?
-  createdAt   DateTime  @default(now())
-  updatedAt   DateTime  @updatedAt
-
-  @@unique([noteId, userId])
-}
-
 model SystemConfig {
   key   String @id
   value String
@@ -163,6 +212,12 @@ model AiFeedback {
   correctedContent String?
   metadata         String?
   createdAt        DateTime @default(now())
+  user             User?    @relation(fields: [userId], references: [id], onDelete: Cascade)
+  note             Note     @relation(fields: [noteId], references: [id], onDelete: Cascade)
+
+  @@index([noteId])
+  @@index([userId])
+  @@index([feature])
 }
 
 model MemoryEchoInsight {
@@ -176,8 +231,13 @@ model MemoryEchoInsight {
   viewed          Boolean  @default(false)
   feedback        String?
   dismissed       Boolean  @default(false)
+  user            User?    @relation(fields: [userId], references: [id], onDelete: Cascade)
+  note2           Note     @relation("EchoNote2", fields: [note2Id], references: [id], onDelete: Cascade)
+  note1           Note     @relation("EchoNote1", fields: [note1Id], references: [id], onDelete: Cascade)
 
   @@unique([userId, insightDate])
+  @@index([userId, insightDate])
+  @@index([userId, dismissed])
 }
 
 model UserAISettings {
@@ -196,4 +256,10 @@ model UserAISettings {
   emailNotifications  Boolean @default(false)
   desktopNotifications Boolean @default(false)
   anonymousAnalytics  Boolean @default(false)
+  user                User    @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@index([memoryEcho])
+  @@index([aiProvider])
+  @@index([memoryEchoFrequency])
+  @@index([preferredLanguage])
 }