refactor(onboarding): point consumers at the kebab-case component files

Update the onboarding step page, baseline form, and the anamnesis-card
spec to import from the renamed kebab-case files. Export identifiers stay
unchanged.

src/app/onboarding/[step]/page.tsx

@@ -1,12 +1,12 @@
 import { redirect, notFound } from "next/navigation";
 import Link from "next/link";
 
-import { OnboardingShell } from "@/components/onboarding/OnboardingShell";
-import { WelcomeCarousel } from "@/components/onboarding/WelcomeCarousel";
-import { GoalsChipPicker } from "@/components/onboarding/GoalsChipPicker";
-import { SourceCardGrid } from "@/components/onboarding/SourceCardGrid";
-import { BaselineForm } from "@/components/onboarding/BaselineForm";
-import { DoneScreen } from "@/components/onboarding/DoneScreen";
+import { OnboardingShell } from "@/components/onboarding/onboarding-shell";
+import { WelcomeCarousel } from "@/components/onboarding/welcome-carousel";
+import { GoalsChipPicker } from "@/components/onboarding/goals-chip-picker";
+import { SourceCardGrid } from "@/components/onboarding/source-card-grid";
+import { BaselineForm } from "@/components/onboarding/baseline-form";
+import { DoneScreen } from "@/components/onboarding/done-screen";
 import { Button } from "@/components/ui/button";
 import { getSession } from "@/lib/auth/session";
 import { getServerTranslator } from "@/lib/i18n/server-translator";

src/components/onboarding/__tests__/anamnesis-card.test.tsx

@@ -14,7 +14,7 @@ import { I18nProvider } from "@/lib/i18n/context";
 import {
   AnamnesisCard,
   buildAnamnesisAboutMeBody,
-} from "../AnamnesisCard";
+} from "../anamnesis-card";
 
 describe("buildAnamnesisAboutMeBody", () => {
   const empty = { conditions: "", allergies: "" };

src/components/onboarding/baseline-form.tsx

@@ -25,7 +25,7 @@ import {
   AnamnesisCard,
   buildAnamnesisAboutMeBody,
   type AnamnesisValue,
-} from "@/components/onboarding/AnamnesisCard";
+} from "@/components/onboarding/anamnesis-card";
 
 /**
  * v1.4.25 W14b-Content — onboarding step 3 (baseline).