fix: align MCP server schema with memento-note + per-request user isolation

- Remove `embedding` column from MCP Note model (dropped by migration 20260425120000)
- Add missing columns: trashedAt, dismissedFromRecent, contentUpdatedAt, cardSizeMode
- Add NoteEmbedding model and Label.notebook relation
- Use AsyncLocalStorage to pass authenticated userId from API key to tool handlers
- Enable SSE mode and auth in docker-compose for N8N integration

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

mcp-server/prisma/schema.prisma

@@ -16,7 +16,9 @@ model Note {
   color              String              @default("default")
   isPinned           Boolean             @default(false)
   isArchived         Boolean             @default(false)
+  trashedAt          DateTime?
   type               String              @default("text")
+  dismissedFromRecent Boolean             @default(false)
   checkItems         String?
   labels             String?
   images             String?
@@ -27,19 +29,30 @@ model Note {
   reminderLocation   String?
   isMarkdown         Boolean             @default(false)
   size               String              @default("small")
-  embedding          String?
   sharedWith         String?
   userId             String?
   order              Int                 @default(0)
   notebookId         String?
   createdAt          DateTime            @default(now())
   updatedAt          DateTime            @updatedAt
+  contentUpdatedAt   DateTime            @default(now())
   autoGenerated      Boolean?
   aiProvider         String?
   aiConfidence       Int?
   language           String?
   languageConfidence Float?
   lastAiAnalysis     DateTime?
+  noteEmbedding      NoteEmbedding?
+}
+
+model NoteEmbedding {
+  id        String   @id @default(cuid())
+  noteId    String   @unique
+  embedding String
+  createdAt DateTime @default(now())
+  note      Note     @relation(fields: [noteId], references: [id], onDelete: Cascade)
+
+  @@index([noteId])
 }
 
 model Notebook {
@@ -51,6 +64,7 @@ model Notebook {
   userId    String
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
+  labels    Label[]
 }
 
 model Label {
@@ -61,6 +75,11 @@ model Label {
   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])
 }
 
 model User {
@@ -72,6 +91,7 @@ model User {
   role               String              @default("USER")
   image              String?
   theme              String              @default("light")
+  cardSizeMode       String              @default("variable")
   resetToken         String?             @unique
   resetTokenExpiry   DateTime?
   createdAt          DateTime            @default(now())
@@ -170,7 +190,8 @@ model UserAISettings {
   preferredLanguage      String  @default("auto")
   fontSize               String  @default("medium")
   demoMode               Boolean @default(false)
-  showRecentNotes        Boolean @default(false)
+  showRecentNotes        Boolean @default(true)
+  notesViewMode          String  @default("masonry")
   emailNotifications      Boolean @default(false)
   desktopNotifications   Boolean @default(false)
   anonymousAnalytics      Boolean @default(false)