fix: delete annotations and participants before experiment, skip calibration when disabled, remove Startseite link from annotation view

src/app/actions/calibration-scoring.ts

@@ -113,7 +113,6 @@ function calculateDialectScores(
  * Returns true if calibration is completed or not required, false if calibration is pending.
  */
 export async function isCalibrationDone(experimentId: number): Promise<boolean> {
-  console.log('Checking calibration status for experimentId:', experimentId);
   const session = await auth.api.getSession({ headers: await headers() });
   if (!session) throw new Error('Nicht angemeldet');
 

src/app/actions/experiment.ts

@@ -6,7 +6,7 @@ import { experiment_calibration } from '@/lib/model/experiment_calibration';
 import { annotation } from '@/lib/model/annotation';
 import { participant } from '@/lib/model/participant';
 import { dataset_entry } from '@/lib/model/dataset_entry';
-import { and, eq, count, sql, isNotNull } from 'drizzle-orm';
+import { and, eq, count, sql } from 'drizzle-orm';
 import { revalidatePath } from 'next/cache';
 import { auth, requireAdmin } from '@/lib/auth';
 import { isParticipantCalibrationDone } from './calibration-scoring';
@@ -111,7 +111,9 @@ export async function deleteExperiment(id: number) {
   }
 
   try {
-    // Delete all experiment_calibration records first
+    // Delete all child records first (FK constraints)
+    await db.delete(annotation).where(eq(annotation.experimentId, id));
+    await db.delete(participant).where(eq(participant.experimentId, id));
     await db.delete(experiment_calibration).where(eq(experiment_calibration.experimentId, id));
 
     // Delete the experiment

src/components/AnnotationViews/AnnotationPageView.tsx

@@ -189,9 +189,6 @@ export default function AnnotationPageView({
             <div className="flex-1 flex items-center justify-center">
               <div className="text-center">
                 <p className="text-gray-600">Unbekannter Annotation-Typ: {viewType}</p>
-                <Link href="/" className="text-blue-600 hover:underline mt-4 inline-block">
-                  ← Startseite
-                </Link>
               </div>
             </div>
           </div>
@@ -274,12 +271,7 @@ export default function AnnotationPageView({
                 >
                   {sidebarOpen ? '✕' : '☰'}
                 </button>
-                <Link
-                  href="/"
-                  className="text-sm px-3 py-1.5 bg-gray-100 hover:bg-gray-200 text-gray-700 rounded-md transition-colors"
-                >
-                  ← Startseite
-                </Link>
+
                 {Object.keys(dialectScores).length > 0 && (
                   <button
                     onClick={() => setIsCalibrationModalOpen(true)}