fix(web): remove prefixo duplicado /api/v1 no DevLogin

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

apps/web/src/components/dev/DevLogin.tsx

@@ -24,7 +24,7 @@ export function DevLogin({ onLogin }: { onLogin: () => void }) {
     setLoading(user.userId);
     setError(null);
     try {
-      const raw = await apiFetch('/api/v1/auth/dev/token', {
+      const raw = await apiFetch('/auth/dev/token', {
         method: 'POST',
         body: { userId: user.userId, workspaceId: 'dev-workspace', role: user.role },
       });