Rename nav header branding from "Story Kit" to "StorkIt"

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

frontend/src/components/ChatHeader.test.tsx

@@ -136,9 +136,9 @@ describe("ChatHeader", () => {
 		expect(screen.getByText("Built: 2026-01-01 00:00")).toBeInTheDocument();
 	});
 
-	it("displays Story Kit branding in the header", () => {
+	it("displays StorkIt branding in the header", () => {
 		render(<ChatHeader {...makeProps()} />);
-		expect(screen.getByText("Story Kit")).toBeInTheDocument();
+		expect(screen.getByText("StorkIt")).toBeInTheDocument();
 	});
 
 	it("shows disabled placeholder when claudeModels is empty and no API key", () => {

frontend/src/components/ChatHeader.tsx

@@ -82,7 +82,7 @@ export function ChatHeader({
 						letterSpacing: "0.02em",
 					}}
 				>
-					Story Kit
+					StorkIt
 				</span>
 				<div
 					title={projectPath}