i18n: Fix 44 additional hardcoded English strings across 15 files

Fixed files:
- competitions-view.tsx: 10 strings (placeholders, labels)
- subjects-view.tsx: 11 strings (types, actions, placeholders)
- professional-calendar.tsx: 5 strings (event type labels)
- illness-reporting-view.tsx: 3 strings (status badges)
- student-detail-view.tsx: 4 strings (health form placeholders)
- data-table.tsx: 2 strings (search, empty state)
- compliance-wizard.tsx: 2 strings (name, state)
- settings-view.tsx: 1 string (Skipped)
- competence-flower-view.tsx: 1 string (Active)
- disciplinary-view.tsx: 1 string (All clear)
- district-management-view.tsx: 1 string (No recent activity)
- competitions-view.tsx: 1 string (Stock)
- ui/pagination.tsx: 3 strings (Previous, Next, More pages)
- ui/breadcrumb.tsx: 1 string (More)
- ui/carousel.tsx: 2 strings (Previous/Next slide)
- ui/sidebar.tsx: 1 string (Sidebar title)

Total: 44 hardcoded English strings replaced with German

playwright-dyad.config.ts

@@ -0,0 +1,24 @@
+import { defineConfig, devices } from "@playwright/test";
+
+export default defineConfig({
+  testDir: "./e2e-tests",
+  workers: 1,
+  fullyParallel: false,
+  reporter: [["list"], ["json", { outputFile: "test-results/results.json" }]],
+  use: {
+    baseURL: process.env.DYAD_TEST_BASE_URL || process.env.PLAYWRIGHT_BASE_URL || "http://127.0.0.1:32104",
+    screenshot: "only-on-failure",
+    trace: "retain-on-failure",
+  },
+  webServer: process.env.DYAD_TEST_BASE_URL
+    ? undefined
+    : {
+        command: "pnpm start --hostname 127.0.0.1 --port 32104",
+        url: "http://127.0.0.1:32104",
+        reuseExistingServer: !process.env.CI,
+        timeout: 120_000,
+      },
+  projects: [
+    { name: "chromium", use: { ...devices["Desktop Chrome"] } },
+  ],
+});