fix: wire catalog add buttons, fix Trans bold rendering, lint cleanup

- CatalogSearchOverlay: replace handleAddStub with real openAddToCollection/openAddToThread routing based on catalogSearchMode
- ConfirmDialog + __root.tsx: swap t() for Trans component on deleteItemMessage, deleteCandidateMessage, pickWinnerMessage — fixes <bold> rendering as literal text
- Biome format pass: fix 23 lint/format errors across scripts, services, tests
- Planning: mark all UAT and verification gaps resolved for phases 07, 11, 16, 20, 21, 22, 24, 32, 34; close debug sessions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/services/thread.service.test.ts

@@ -619,7 +619,10 @@ describe("Thread Service", () => {
 
 	describe("catalog-linked candidates (globalItemId)", () => {
 		async function insertManufacturer(testDb: any, name: string) {
-			const slug = name.toLowerCase().replace(/\s+/g, "-").replace(/[^a-z0-9-]/g, "");
+			const slug = name
+				.toLowerCase()
+				.replace(/\s+/g, "-")
+				.replace(/[^a-z0-9-]/g, "");
 			const [row] = await testDb
 				.insert(manufacturers)
 				.values({ name, slug, website: `https://${slug}.com` })
@@ -638,13 +641,16 @@ describe("Thread Service", () => {
 			},
 		) {
 			const m = await insertManufacturer(testDb, data.brand);
-			const [row] = await testDb.insert(globalItems).values({
-				manufacturerId: m.id,
-				model: data.model,
-				weightGrams: data.weightGrams ?? null,
-				priceCents: data.priceCents ?? null,
-				imageUrl: data.imageUrl ?? null,
-			}).returning();
+			const [row] = await testDb
+				.insert(globalItems)
+				.values({
+					manufacturerId: m.id,
+					model: data.model,
+					weightGrams: data.weightGrams ?? null,
+					priceCents: data.priceCents ?? null,
+					imageUrl: data.imageUrl ?? null,
+				})
+				.returning();
 			return row;
 		}