refactor(ux): consolidate BMAD skills, update design system, and clean up Prisma generated client

keep-notes/app/actions/chat-actions.ts

@@ -0,0 +1,74 @@
+'use server'
+
+import { chatService } from '@/lib/ai/services'
+import { auth } from '@/auth'
+import { revalidatePath } from 'next/cache'
+import { prisma } from '@/lib/prisma'
+
+/**
+ * Create a new empty conversation and return its id.
+ * Called before streaming so the client knows the conversationId upfront.
+ */
+export async function createConversation(title: string, notebookId?: string) {
+  const session = await auth()
+  if (!session?.user?.id) throw new Error('Unauthorized')
+
+  const conversation = await prisma.conversation.create({
+    data: {
+      userId: session.user.id,
+      notebookId: notebookId || null,
+      title: title.substring(0, 80) + (title.length > 80 ? '...' : ''),
+    },
+  })
+
+  revalidatePath('/chat')
+  return { id: conversation.id, title: conversation.title }
+}
+
+/**
+ * @deprecated Use the streaming API route /api/chat instead.
+ * Kept for backward compatibility with the debug route.
+ */
+export async function sendChatMessage(
+  message: string,
+  conversationId?: string,
+  notebookId?: string
+) {
+  const session = await auth()
+  if (!session?.user?.id) throw new Error('Unauthorized')
+
+  try {
+    const result = await chatService.chat(message, conversationId, notebookId)
+    revalidatePath('/chat')
+    return { success: true, ...result }
+  } catch (error: any) {
+    console.error('[ChatAction] Error:', error)
+    return { success: false, error: error.message }
+  }
+}
+
+export async function getConversations() {
+  const session = await auth()
+  if (!session?.user?.id) return []
+
+  return chatService.listConversations(session.user.id)
+}
+
+export async function getConversationDetails(id: string) {
+  const session = await auth()
+  if (!session?.user?.id) return null
+
+  return chatService.getHistory(id)
+}
+
+export async function deleteConversation(id: string) {
+  const session = await auth()
+  if (!session?.user?.id) throw new Error('Unauthorized')
+
+  await prisma.conversation.delete({
+    where: { id, userId: session.user.id }
+  })
+
+  revalidatePath('/chat')
+  return { success: true }
+}