Update application code and dependencies

prisma/migrations/20260506022312_add_conversation_message_models/migration.sql

@@ -0,0 +1,23 @@
+-- CreateTable
+CREATE TABLE "Conversation" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "agentId" INTEGER NOT NULL,
+    "userId" INTEGER,
+    "title" TEXT NOT NULL DEFAULT '新对话',
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "Conversation_agentId_fkey" FOREIGN KEY ("agentId") REFERENCES "Agent" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "Conversation_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE SET NULL ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Message" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "conversationId" INTEGER NOT NULL,
+    "role" TEXT NOT NULL,
+    "content" TEXT NOT NULL,
+    "timestamp" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "Message_conversationId_fkey" FOREIGN KEY ("conversationId") REFERENCES "Conversation" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);