fix: resolve ChatMessage type export issue in server actions

Removed type re-export from server action file which was causing
Next.js to incorrectly bundle types into the runtime server actions
bundle. Updated all imports to reference types directly from the
types file.

This fixes the "ReferenceError: ChatMessage is not defined" error
that was occurring during E2E tests when the server tried to load
the actions module.

Changes:
- Removed `export type { ChatMessage, ChatResponse }` from actions/chatbot/index.ts
- Updated imports in components and tests to use @/actions/chatbot/types
- All type imports now correctly use the type modifier

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: mchestr

__tests__/actions/chatbot.test.ts

@@ -2,7 +2,8 @@
  * Tests for actions/chatbot.ts - chatbot sources tracking functionality
  */
 
-import { chatWithAdminBot, type ChatMessage } from "@/actions/chatbot"
+import { chatWithAdminBot } from "@/actions/chatbot"
+import { type ChatMessage } from "@/actions/chatbot/types"
 import { callChatLLM } from "@/lib/llm/chat"
 import { prisma } from "@/lib/prisma"
 import { getServerSession } from "next-auth"

actions/chatbot/index.ts

@@ -9,8 +9,6 @@ import { type ChatMessage, type ChatResponse } from "./types"
 
 const logger = createLogger("CHATBOT")
 
-export type { ChatMessage, ChatResponse }
-
 export async function chatWithAdminBot(
   messages: ChatMessage[],
   conversationId?: string

components/__tests__/admin/chatbot/chat-window.test.tsx

@@ -6,7 +6,8 @@ import { Chatbot } from "@/components/admin/chatbot/chat-window"
 import { ChatProvider } from "@/components/admin/chatbot/chat-context"
 import { render, screen, waitFor } from "@testing-library/react"
 import userEvent from "@testing-library/user-event"
-import { chatWithAdminBot, type ChatMessage } from "@/actions/chatbot"
+import { chatWithAdminBot } from "@/actions/chatbot"
+import { type ChatMessage } from "@/actions/chatbot/types"
 
 // Mock the chatbot action
 jest.mock("@/actions/chatbot", () => ({

components/admin/chatbot/chat-window.tsx

@@ -1,6 +1,7 @@
 "use client"
 
-import { chatWithAdminBot, type ChatMessage } from "@/actions/chatbot"
+import { chatWithAdminBot } from "@/actions/chatbot"
+import { type ChatMessage } from "@/actions/chatbot/types"
 import { AnimatePresence, motion } from "framer-motion"
 import dynamic from "next/dynamic"
 import { useEffect, useRef, useState } from "react"