fix: confirm deletes and restore recreated planning items

tests/test_routes.py

@@ -111,6 +111,16 @@ def test_planning_shows_budgets_and_community_accounts(logged_in_client):
     assert b"Auszahlung Person B" in response.data
 
 
+def test_planning_delete_actions_render_confirmation_hooks(logged_in_client):
+    response = logged_in_client.get("/planning/2026-04")
+
+    assert response.status_code == 200
+    assert b'data-confirm-submit="Einkommenszeile wirklich l\xc3\xb6schen?' in response.data
+    assert b'data-confirm-submit="Kategorie wirklich l\xc3\xb6schen?' in response.data
+    assert b'data-confirm-submit="Konto wirklich l\xc3\xb6schen?' in response.data
+    assert b'data-confirm-submit="Eintrag wirklich l\xc3\xb6schen?' in response.data
+
+
 def test_community_account_can_assign_budget_categories(logged_in_client):
     community_account = CommunityAccount.query.filter_by(slug="hauptkonto").first()
     category = Category.query.filter_by(slug="wohnen").first()
@@ -130,6 +140,59 @@ def test_community_account_can_assign_budget_categories(logged_in_client):
     assert category.community_account_id == community_account.id
 
 
+def test_deleted_category_can_be_created_again(logged_in_client):
+    create_response = logged_in_client.post(
+        "/planning/2026-04/categories",
+        data={"name": "Testbudget", "area": "budget"},
+    )
+    assert create_response.status_code == 302
+
+    category = Category.query.filter_by(slug="testbudget").first()
+    original_id = category.id
+
+    delete_response = logged_in_client.post(f"/planning/2026-04/categories/{category.id}/delete")
+    assert delete_response.status_code == 302
+
+    recreate_response = logged_in_client.post(
+        "/planning/2026-04/categories",
+        data={"name": "Testbudget", "area": "budget"},
+    )
+
+    restored = Category.query.filter_by(slug="testbudget").first()
+
+    assert recreate_response.status_code == 302
+    assert restored.id == original_id
+    assert restored.is_active is True
+
+
+def test_deleted_community_account_can_be_created_again(logged_in_client):
+    create_response = logged_in_client.post(
+        "/planning/2026-04/community-accounts",
+        data={"name": "Testkonto", "description": ""},
+    )
+    assert create_response.status_code == 302
+
+    community_account = CommunityAccount.query.filter_by(slug="testkonto").first()
+    original_id = community_account.id
+
+    delete_response = logged_in_client.post(
+        f"/planning/2026-04/community-accounts/{community_account.id}/delete"
+    )
+    assert delete_response.status_code == 302
+
+    recreate_response = logged_in_client.post(
+        "/planning/2026-04/community-accounts",
+        data={"name": "Testkonto", "description": "Wieder da"},
+    )
+
+    restored = CommunityAccount.query.filter_by(slug="testkonto").first()
+
+    assert recreate_response.status_code == 302
+    assert restored.id == original_id
+    assert restored.is_active is True
+    assert restored.description == "Wieder da"
+
+
 def test_community_account_rejects_budget_assigned_to_other_account(logged_in_client):
     primary_account = CommunityAccount.query.filter_by(slug="hauptkonto").first()
     secondary_response = logged_in_client.post(