Add verified rollback for failed recipe imports

Co-authored-by: Bumble <bumble@agents.famfallman.com>
Co-authored-by: fredamn76 <fredrik.fallman@gmail.com>
Signed-off-by: fredamn76 <fredrik.fallman@gmail.com>

tests/test_server.py

@@ -126,6 +126,48 @@ class TestTextImport:
         assert server.import_recipe_text(text)["recipe"] == recipe
 
 
+class TestDeleteRecipe:
+    def test_requires_the_exact_stored_slug(self, monkeypatch):
+        monkeypatch.setattr(
+            server,
+            "get_recipe",
+            lambda _slug: {"slug": "stored-slug", "name": "Test"},
+        )
+        monkeypatch.setattr(
+            server,
+            "_client",
+            lambda: pytest.fail("must not delete without exact confirmation"),
+        )
+
+        with pytest.raises(ValueError, match="stored-slug"):
+            server.delete_recipe("recipe-id", "wrong-slug")
+
+    def test_deletes_and_proves_the_recipe_is_gone(self, mock_mealie):
+        recipe = {"slug": "zzz-test", "name": "ZZZ Test"}
+
+        def handler(request: httpx.Request) -> httpx.Response:
+            if request.method == "DELETE":
+                return httpx.Response(200, json={})
+            if request.url.path == "/api/recipes/zzz-test":
+                # First GET is get_recipe; second GET is the deletion proof.
+                if getattr(handler, "read_once", False):
+                    return httpx.Response(404, json={"detail": "Not Found"})
+                handler.read_once = True
+                return httpx.Response(200, json=recipe)
+            return httpx.Response(500)
+
+        mock_mealie(handler)
+        result = server.delete_recipe("zzz-test", "zzz-test")
+
+        assert result == {
+            "deleted": True,
+            "slug": "zzz-test",
+            "name": "ZZZ Test",
+            "delete_status": 200,
+            "readback_status": 404,
+        }
+
+
 class TestParseIngredients:
     def test_reverts_structure_when_mealie_rewords_the_swedish_line(self, mock_mealie):
         canonical = "4,7 dl basmatiris"