Fix bug 1: Only fetch Anthropic models when API key exists

getAnthropicModels() was called unconditionally on mount, causing a
console error when no API key was set. Now chains the call after
getAnthropicApiKeyExists() confirms a key is present.

Includes regression test added before the fix per bug workflow.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.story_kit/bugs/archive/bug-1-anthropic-models-fetch-without-key.md

@@ -0,0 +1,24 @@
+---
+name: Anthropic models fetched without API key
+---
+
+# Bug 1: Anthropic Models Fetched Without API Key
+
+## Symptom
+
+Browser console shows `Error: Anthropic API key not found. Please set your API key.` on every page load, even when the user has no Anthropic API key and is using `claude-code-pty`.
+
+## Root Cause
+
+`Chat.tsx` unconditionally calls `api.getAnthropicModels()` on mount. The server endpoint requires an API key to call the Anthropic models list API. When no key is set, the request fails with an error logged to the console.
+
+## Reproduction Steps
+
+1. Start the server without setting an Anthropic API key
+2. Open the web UI
+3. Open browser developer console
+4. Observe the error on page load
+
+## Proposed Fix
+
+Only call `getAnthropicModels()` after `getAnthropicApiKeyExists()` confirms a key is set. Chain the calls so the models fetch is conditional.

frontend/src/components/Chat.test.tsx

@@ -592,4 +592,17 @@ describe("Chat review panel", () => {
 
 		expect(await screen.findByText("Cannot read stories")).toBeInTheDocument();
 	});
+
+	it("does not fetch Anthropic models when no API key exists", async () => {
+		mockedApi.getAnthropicApiKeyExists.mockResolvedValue(false);
+		mockedApi.getAnthropicModels.mockClear();
+
+		render(<Chat projectPath="/tmp/project" onCloseProject={vi.fn()} />);
+
+		await waitFor(() => {
+			expect(mockedApi.getAnthropicApiKeyExists).toHaveBeenCalled();
+		});
+
+		expect(mockedApi.getAnthropicModels).not.toHaveBeenCalled();
+	});
 });

frontend/src/components/Chat.tsx

@@ -174,15 +174,8 @@ export function Chat({ projectPath, onCloseProject }: ChatProps) {
 			.getAnthropicApiKeyExists()
 			.then((exists) => {
 				setHasAnthropicKey(exists);
-			})
+				if (!exists) return;
-			.catch((err) => {
+				return api.getAnthropicModels().then((models) => {
-				console.error(err);
-				setHasAnthropicKey(false);
-			});
-
-		api
-			.getAnthropicModels()
-			.then((models) => {
 					if (models.length > 0) {
 						const sortedModels = models.sort((a, b) =>
 							a.toLowerCase().localeCompare(b.toLowerCase()),
@@ -191,9 +184,11 @@ export function Chat({ projectPath, onCloseProject }: ChatProps) {
 					} else {
 						setClaudeModels([]);
 					}
+				});
 			})
 			.catch((err) => {
 				console.error(err);
+				setHasAnthropicKey(false);
 				setClaudeModels([]);
 			});
 	}, []);