feat: Kategorien-Verwaltung auf der Admin-Seite

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

finance/tests/test_admin.py

@@ -234,6 +234,21 @@ def test_admin_passwort_success_returns_200_with_confirmation(
     assert r2.status_code == 200
 
 
+# --- Kategorien-Verwaltung --------------------------------------------------
+
+def test_admin_zeigt_kategorien_verwaltung(client_with_env_file, db):
+    from app.models.tables import Category
+    client, password = client_with_env_file
+    client.post("/login", data={"username": "admin", "password": password})
+    db.add(Category(name="Admin-Kat"))
+    db.commit()
+    r = client.get("/admin").text
+    assert "Kategorien" in r and "Admin-Kat" in r
+    assert "Neue Kategorie anlegen" in r
+    assert 'hx-patch="/api/categories/' in r
+    assert 'hx-post="/api/categories"' in r
+
+
 # --- Regeln neu anwenden ---------------------------------------------------
 
 def test_apply_rules_retroactively_categorizes_uncategorized_confirmed_tx(db):