fix: SQL maker creates wrong categories and badge import fails when ExternalTexts.json missing

- writeSqlMigration now classifies furni via classifyFurni and generates
  correct category sub-pages (imp_<catKey>) instead of hardcoded imp_other
- writeSqlMigration generates idempotent INSERT...SELECT WHERE NOT EXISTS
  for parent and category catalog_pages, with correct numeric page_id
- writeBadgeToExternalTexts creates ExternalTexts.json (and parent dirs)
  when missing instead of failing with ENOENT

src/lib/services/upload-import.test.ts

@@ -62,6 +62,8 @@ vi.mock("@/lib/services/furni-import", () => ({
 		async (insertFn: (nextId: number) => Promise<unknown>) => insertFn(701),
 	),
 	autoPriceFurni: vi.fn(() => ({ credits: 3, points: 0, pointsType: 0 })),
+	CATEGORY_PAGE: {},
+	classifyFurni: vi.fn(() => "other"),
 	ensureDirectories: vi.fn(async () => {
 		const dirs = [
 			assetTargets.swfDir,
@@ -76,6 +78,8 @@ vi.mock("@/lib/services/furni-import", () => ({
 		await Promise.all(dirs.map((dir) => fs.mkdir(dir, { recursive: true })));
 	}),
 	getOrCreateCategoryPage: getOrCreateCategoryPageMock,
+	IMPORTED_PAGE_CAPTION: "Imported Furniture",
+	IMPORTED_PAGE_CAPTION_SAVE: "imported_furni",
 }));
 
 vi.mock("@/lib/services/swf/nitro-builder", () => ({