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>

.planning/debug/client-w0-undefined-after-login.md

@@ -1,5 +1,5 @@
 ---
-status: awaiting_human_verify
+status: resolved
 trigger: "Client-side error 'can't access property id, w[0] is undefined' occurs after login"
 created: 2026-04-08T00:00:00Z
 updated: 2026-04-08T00:00:00Z