Chapter 0: Basic chat starting point (tool-free)

- Remove all AI tools (weather, create/update document, suggestions)
- Remove all agent definitions (tutor, quiz master, planner, analyst)
- Remove custom artifacts (flashcard, study-plan)
- Simplify prompts to basic chat without tool routing
- Keep UI components with placeholder types for rendering
- Exclude tempfiles from TypeScript compilation

Author: NiallJoeMaher

app/(chat)/api/chat/route.ts

@@ -4,7 +4,6 @@ import {
   createUIMessageStream,
   JsonToSseTransformStream,
   smoothStream,
-  stepCountIs,
   streamText,
 } from "ai";
 import { unstable_cache as cache } from "next/cache";
@@ -22,20 +21,10 @@ import { fetchModels } from "tokenlens/fetch";
 import { getUsage } from "tokenlens/helpers";
 import { auth, type UserType } from "@/app/(auth)/auth";
 import type { VisibilityType } from "@/components/visibility-selector";
-import {
-  createAnalystAgent,
-  createPlannerAgent,
-  createQuizMasterAgent,
-  createTutorAgent,
-} from "@/lib/ai/agents";
 import { entitlementsByUserType } from "@/lib/ai/entitlements";
 import type { ChatModel } from "@/lib/ai/models";
 import { type RequestHints, systemPrompt } from "@/lib/ai/prompts";
 import { myProvider } from "@/lib/ai/providers";
-import { createDocument } from "@/lib/ai/tools/create-document";
-import { getWeather } from "@/lib/ai/tools/get-weather";
-import { requestSuggestions } from "@/lib/ai/tools/request-suggestions";
-import { updateDocument } from "@/lib/ai/tools/update-document";
 import { isProductionEnvironment } from "@/lib/constants";
 import {
   createStreamId,
@@ -186,36 +175,7 @@ export async function POST(request: Request) {
           model: myProvider.languageModel(selectedChatModel),
           system: systemPrompt({ selectedChatModel, requestHints }),
           messages: convertToModelMessages(uiMessages),
-          stopWhen: stepCountIs(5),
-          experimental_activeTools:
-            selectedChatModel === "chat-model-reasoning"
-              ? []
-              : [
-                  "getWeather",
-                  "createDocument",
-                  "updateDocument",
-                  "requestSuggestions",
-                  // Study buddy agents
-                  "tutor",
-                  "quizMaster",
-                  "planner",
-                  "analyst",
-                ],
           experimental_transform: smoothStream({ chunking: "word" }),
-          tools: {
-            getWeather,
-            createDocument: createDocument({ session, dataStream }),
-            updateDocument: updateDocument({ session, dataStream }),
-            requestSuggestions: requestSuggestions({
-              session,
-              dataStream,
-            }),
-            // Study buddy agents
-            tutor: createTutorAgent({ session, dataStream }),
-            quizMaster: createQuizMasterAgent({ session, dataStream }),
-            planner: createPlannerAgent({ session, dataStream }),
-            analyst: createAnalystAgent({ session, dataStream }),
-          },
           experimental_telemetry: {
             isEnabled: isProductionEnvironment,
             functionId: "stream-text",