fix(housekeeping): align poll deletion lock order

src/features/housekeeping/domains/content/services/mutation-runtime-database.test.ts

@@ -19,6 +19,7 @@ const database = vi.hoisted(() => {
 	let selectedQueue: Record<string, unknown>[] = [];
 	let selectedTable: string | undefined;
 	let lockedTables: Array<readonly [string | undefined, string]> = [];
+	let mutationSteps: string[] = [];
 	const insertedValues = vi.fn(async (_values: Record<string, unknown>) => [
 		{ insertId: 8 },
 	]);
@@ -32,6 +33,7 @@ const database = vi.hoisted(() => {
 	const limit = vi.fn(async () => nextSelected());
 	const lock = vi.fn(async (strength: string) => {
 		lockedTables.push([selectedTable, strength]);
+		mutationSteps.push(`lock:${selectedTable ?? "unknown"}`);
 		return nextSelected();
 	});
 	const where = vi.fn(() => ({ for: lock, limit }));
@@ -42,7 +44,12 @@ const database = vi.hoisted(() => {
 	const select = vi.fn(() => ({ from }));
 	const execute = vi.fn(async () => undefined);
 	const deleteWhere = vi.fn(async () => undefined);
-	const remove = vi.fn((_table: unknown) => ({ where: deleteWhere }));
+	const remove = vi.fn((table: unknown) => {
+		mutationSteps.push(
+			`delete:${(table as { tableName?: string }).tableName ?? "unknown"}`,
+		);
+		return { where: deleteWhere };
+	});
 	return {
 		execute,
 		insert,
@@ -51,6 +58,9 @@ const database = vi.hoisted(() => {
 		lockedTables() {
 			return [...lockedTables];
 		},
+		mutationSteps() {
+			return [...mutationSteps];
+		},
 		set,
 		update,
 		select,
@@ -66,6 +76,7 @@ const database = vi.hoisted(() => {
 			selectedQueue = [];
 			selectedTable = undefined;
 			lockedTables = [];
+			mutationSteps = [];
 		},
 		queueSelected(...values: Record<string, unknown>[]) {
 			selectedQueue = [...values];
@@ -186,7 +197,17 @@ describe("Content database mutation runtime partial updates", () => {
 			"WebsitePollQuestion",
 			"WebsitePoll",
 		]);
-		expect(database.lockedTables()).toEqual([["WebsitePoll", "update"]]);
+		expect(database.lockedTables()).toEqual([
+			["WebsitePoll", "update"],
+			["WebsitePollQuestion", "update"],
+		]);
+		expect(database.mutationSteps()).toEqual([
+			"lock:WebsitePoll",
+			"lock:WebsitePollQuestion",
+			"delete:WebsitePollVote",
+			"delete:WebsitePollQuestion",
+			"delete:WebsitePoll",
+		]);
 	});
 
 	it("deletes question votes before the question and retains its audit snapshot", async () => {
@@ -219,6 +240,11 @@ describe("Content database mutation runtime partial updates", () => {
 		expect(database.lockedTables()).toEqual([
 			["WebsitePollQuestion", "update"],
 		]);
+		expect(database.mutationSteps()).toEqual([
+			"lock:WebsitePollQuestion",
+			"delete:WebsitePollVote",
+			"delete:WebsitePollQuestion",
+		]);
 	});
 
 	it("rejects moving a question to another poll during update", async () => {

src/features/housekeeping/domains/content/services/mutation-runtime-database.ts

@@ -635,6 +635,11 @@ async function pollChange(
 		.for("update");
 	if (!existing) throw notFound();
 	if (action === "delete") {
+		await connection
+			.select({ id: WebsitePollQuestion.id })
+			.from(WebsitePollQuestion)
+			.where(eq(WebsitePollQuestion.pollId, id))
+			.for("update");
 		await connection
 			.delete(WebsitePollVote)
 			.where(