feat(backend): complete AI and business migration

app/(dashboard)/chat/actions.ts

@@ -0,0 +1,36 @@
+"use server";
+
+import { requireFreelancerBackend } from "@/server/web/freelancer";
+
+export async function listChatSessionsAction() {
+  const { actor, service } = await requireFreelancerBackend();
+  return service.listChatSessions(actor).map((session) => ({
+    id: session.id,
+    title: session.title,
+    created_at: session.createdAt.toISOString(),
+  }));
+}
+
+export async function listChatMessagesAction(sessionId: string) {
+  const { actor, service } = await requireFreelancerBackend();
+  return service.listChatMessages(actor, sessionId).map((message) => ({
+    id: message.id,
+    role: message.role,
+    content: message.content,
+  }));
+}
+
+export async function createChatSessionAction(title: string) {
+  const { actor, service } = await requireFreelancerBackend();
+  const session = service.createChatSession(actor, { title });
+  return {
+    id: session.id,
+    title: session.title,
+    created_at: session.createdAt.toISOString(),
+  };
+}
+
+export async function deleteChatSessionAction(sessionId: string) {
+  const { actor, service } = await requireFreelancerBackend();
+  service.deleteChatSession(actor, sessionId);
+}