refactor(housekeeping): return result from bulkImport, remove dead server calls, sync i18n

- bulkImportPermissions now returns {count, errors} instead of void
- ImportSection shows per-entry error details in toast
- Remove testRankPermission server action (test is 100% client-side)
- Clean up unused testing state in TestSection
- Sync pages.admin.{import,translations} keys to all 20 languages
- Add importedWithErrors translation key to all locales

src/actions/admin-housekeeping.ts

@@ -127,24 +127,28 @@ export async function deletePermission(formData: FormData): Promise<void> {
 	revalidatePath("/admin/housekeeping");
 }
 
-export async function bulkImportPermissions(formData: FormData): Promise<void> {
+export async function bulkImportPermissions(
+	formData: FormData,
+): Promise<{ count: number; errors: string[] }> {
 	await requirePermission(PERMS.SETTINGS_EDIT);
 
 	const raw = sanitize(String(formData.get("json") ?? ""));
-	if (!raw) return;
+	if (!raw) return { count: 0, errors: ["Empty input"] };
 
 	let parsed: unknown;
 	try {
 		parsed = JSON.parse(raw);
 	} catch {
-		return;
+		return { count: 0, errors: ["Invalid JSON"] };
 	}
 
 	if (!Array.isArray(parsed)) {
-		return;
+		return { count: 0, errors: ["Expected an array"] };
 	}
 
 	const userId = await currentUserId();
+	const errors: string[] = [];
+	let count = 0;
 
 	for (const item of parsed) {
 		const permission = sanitize(String(item.permission ?? ""));
@@ -154,6 +158,7 @@ export async function bulkImportPermissions(formData: FormData): Promise<void> {
 		const dependsOn = sanitize(String(item.dependsOn ?? "")) || null;
 
 		if (!permission || !Number.isFinite(minRank) || minRank < 0) {
+			errors.push("Invalid entry: " + JSON.stringify(item));
 			continue;
 		}
 
@@ -176,12 +181,14 @@ export async function bulkImportPermissions(formData: FormData): Promise<void> {
 					updatedBy: userId ?? undefined,
 				},
 			});
+			count++;
 		} catch {
-			// Failed to upsert
+			errors.push("Failed to upsert: " + permission);
 		}
 	}
 
 	revalidatePath("/admin/housekeeping");
+	return { count, errors };
 }
 
 export async function exportPermissions(): Promise<string> {
@@ -863,20 +870,4 @@ export async function clearAllPermissions(): Promise<void> {
 	revalidatePath("/admin/housekeeping");
 }
 
-export async function testRankPermission(formData: FormData): Promise<void> {
-	await requirePermission(PERMS.SETTINGS_VIEW);
-
-	const rank = Number(formData.get("testRank"));
-	if (!Number.isFinite(rank) || rank < 0) return;
-
-	const perms = await prisma.websiteHousekeepingPermissions.findMany({
-		where: { minRank: { lte: rank } },
-		orderBy: [{ groupName: "asc" }, { permission: "asc" }],
-		select: { permission: true },
-	});
-
-	const granted = perms.map((p) => p.permission);
-	revalidatePath("/admin/housekeeping");
-}
-