adds ability to star chats

server/prisma/schema.prisma

@@ -27,6 +27,11 @@ enum SearchSource {
   exa
 }
 
+enum ProjectKind {
+  starred
+  folder
+}
+
 model User {
   id        String   @id @default(cuid())
   createdAt DateTime @default(now())
@@ -37,6 +42,7 @@ model User {
 
   chats Chat[]
   searches Search[]
+  projects Project[]
 }
 
 model Chat {
@@ -56,6 +62,7 @@ model Chat {
 
   messages Message[]
   calls    LlmCall[]
+  projectItems ProjectItem[]
 
   @@index([userId])
 }
@@ -129,6 +136,7 @@ model Search {
   userId String?
 
   results SearchResult[]
+  projectItems ProjectItem[]
 
   @@index([updatedAt])
   @@index([userId])
@@ -156,3 +164,40 @@ model SearchResult {
 
   @@index([searchId, rank])
 }
+
+model Project {
+  id        String      @id @default(cuid())
+  createdAt DateTime    @default(now())
+  updatedAt DateTime    @updatedAt
+
+  kind  ProjectKind @default(folder)
+  title String
+
+  user   User?   @relation(fields: [userId], references: [id], onDelete: Cascade)
+  userId String?
+
+  items ProjectItem[]
+
+  @@index([kind])
+  @@index([userId])
+}
+
+model ProjectItem {
+  id        String   @id @default(cuid())
+  createdAt DateTime @default(now())
+
+  project   Project @relation(fields: [projectId], references: [id], onDelete: Cascade)
+  projectId String
+
+  chat   Chat?   @relation(fields: [chatId], references: [id], onDelete: Cascade)
+  chatId String?
+
+  search   Search? @relation(fields: [searchId], references: [id], onDelete: Cascade)
+  searchId String?
+
+  @@unique([projectId, chatId])
+  @@unique([projectId, searchId])
+  @@index([projectId, createdAt])
+  @@index([chatId])
+  @@index([searchId])
+}