feat: remove Canvas inspiration entry

tests/unit/app-module-provider-gate.test.tsx

@@ -94,6 +94,14 @@ describe('App programming provider initialization gate', () => {
     await waitFor(() => expect(initProviders).toHaveBeenCalledTimes(1));
   });
 
+  it('redirects the retired inspiration route to the Canvas workspace', async () => {
+    await renderAt('/image-prompts/example');
+
+    expect(await screen.findByText('Canvas workspace')).toBeInTheDocument();
+    expect(screen.queryByText('Module chooser')).not.toBeInTheDocument();
+    expect(initProviders).not.toHaveBeenCalled();
+  });
+
   it('redirects an orphaned token without a user identity away from a direct workspace route', async () => {
     useAuthStore.setState({
       initialized: true,