Initial commit: ExaMetra v1.0.0 — Free & open-source competence & grading platform

Features:
- 15+ views: Dashboard, Classes, Progress, Flower, Matrix, Assessments, Grading, Reports, Attendance, Calendar, Lesson Plans, Analytics, Parent Communication, Behavior Tracking, Settings
- 34+ API endpoints
- 30+ Prisma models
- 700+ i18n keys (German + English)
- Keyboard shortcuts (Cmd+K, Cmd+1-9, Cmd+/)
- Batch deletion, drag-and-drop seating, custom color palette
- Demo accounts (admin, teacher, student, parent)
- Dark mode, responsive design, print styles
- CSV/PDF export, notification system, onboarding tour
- Zero emojis — all replaced with Lucide icons
- MIT License

src/app/api/learning-progress/batch/route.ts

@@ -0,0 +1,57 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { z } from 'zod';
+import { db } from '@/lib/db';
+import { getSession } from '@/lib/auth';
+
+const batchDeleteSchema = z.object({
+  ids: z.array(z.string()).min(1).max(200),
+});
+
+export async function DELETE(req: NextRequest) {
+  const session = await getSession();
+  if (!session?.user) {
+    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+  }
+  if (session.user.role !== 'TEACHER' && session.user.role !== 'SCHOOL_ADMIN' && session.user.role !== 'SUPER_ADMIN') {
+    return NextResponse.json({ error: 'Forbidden' }, { status: 403 });
+  }
+
+  let body: unknown;
+  try {
+    body = await req.json();
+  } catch {
+    return NextResponse.json({ error: 'Invalid JSON' }, { status: 400 });
+  }
+
+  const parsed = batchDeleteSchema.safeParse(body);
+  if (!parsed.success) {
+    return NextResponse.json({ error: parsed.error.issues.map((i) => i.message).join(', ') }, { status: 400 });
+  }
+
+  const { ids } = parsed.data;
+
+  try {
+    const result = await db.learningProgressEntry.deleteMany({
+      where: {
+        id: { in: ids },
+        teacherId: session.userId,
+      },
+    });
+
+    // Audit log
+    await db.auditLog.create({
+      data: {
+        userId: session.userId,
+        schoolId: session.user.schoolId,
+        action: 'BATCH_DELETE',
+        entityType: 'LearningProgressEntry',
+        metadata: JSON.stringify({ count: result.count, ids }),
+      },
+    });
+
+    return NextResponse.json({ deleted: result.count });
+  } catch (error) {
+    console.error('Batch delete error:', error);
+    return NextResponse.json({ error: 'Failed to delete entries' }, { status: 500 });
+  }
+}