perf: memo GridCard, fuse save fns, fix slash tab active color

memento-note/prisma/schema.prisma

@@ -57,6 +57,7 @@ model User {
   bridgeNotes           BridgeNote[]
   bridgeSuggestions     BridgeSuggestion[]
   flashcardDecks        FlashcardDeck[]
+  errorLogs             ErrorLog[]
 }
 
 model Account {
@@ -204,6 +205,7 @@ model Note {
   targetLiveBlocks           LiveBlockRef[]           @relation("TargetLiveBlocks")
   flashcards                 Flashcard[]
   properties                 NoteProperty[]
+  embeddingChunks            NoteEmbeddingChunk[]
 
   @@index([isPinned])
   @@index([isArchived])
@@ -342,6 +344,7 @@ model UserAISettings {
   noteHistoryMode      String  @default("manual")
   autoSave             Boolean @default(true)
   aiProcessingConsent  Boolean @default(false)
+  svgComplexity        String  @default("simple")
   integrationTokens    Json?   // Stores third-party integration tokens (Readwise, Calendar, etc.)
   user                 User    @relation(fields: [userId], references: [id], onDelete: Cascade)
 
@@ -371,6 +374,24 @@ model NoteEmbedding {
   @@index([noteId])
 }
 
+model NoteEmbeddingChunk {
+  id             String                       @id @default(cuid())
+  noteId         String
+  fragmentId     String
+  chunkIndex     Int
+  content        String
+  charCount      Int
+  embedding      Unsupported("vector(1536)")?
+  embeddingModel String?                       @default("text-embedding-3-small")
+  createdAt      DateTime                       @default(now())
+  updatedAt      DateTime                       @updatedAt
+  note           Note                           @relation(fields: [noteId], references: [id], onDelete: Cascade)
+
+  @@unique([noteId, fragmentId])
+  @@index([noteId])
+  @@index([fragmentId])
+}
+
 model NoteLink {
   id              String   @id @default(cuid())
   sourceNoteId    String
@@ -711,6 +732,7 @@ model UserAPIKey {
   encryptedKey String
   keyHash      String
   model        String?
+  baseUrl      String?  @db.Text
   isActive     Boolean  @default(true)
   lastUsedAt   DateTime?
   lastUsedFor  String?
@@ -962,3 +984,23 @@ model AuditLog {
   @@index([action])
   @@index([createdAt])
 }
+
+model ErrorLog {
+  id          String   @id @default(cuid())
+  userId      String?
+  message     String
+  stack       String?  @db.Text
+  url         String?
+  userAgent   String?  @db.Text
+  component   String?  // Component name where error occurred
+  severity    String   @default("error") // error, warning, info
+  resolved    Boolean  @default(false)
+  createdAt   DateTime @default(now())
+
+  user        User?    @relation(fields: [userId], references: [id], onDelete: SetNull)
+
+  @@index([userId])
+  @@index([severity])
+  @@index([createdAt])
+  @@index([resolved])
+}