# Plan 32-04 Summary: Shared Setup Viewer

**Status:** Complete
**Commit:** 0b46eff

## What was done

1. **useSharedSetup hook** (`src/client/hooks/useSetups.ts`):
   - Fetches `/api/shared/:token` with retry disabled (404 = invalid token)
   - Returns same SetupWithItems type as other setup hooks

2. **Route search params** (`src/client/routes/setups/$setupId.tsx`):
   - Added `validateSearch` with Zod schema for `share` query param
   - Three-way data source: share token > authenticated owner > public viewer

3. **Shared setup banner**:
   - Blue banner with link icon: "Shared setup" shown when share token present
   - Positioned above the sticky header bar

4. **Error state for invalid tokens**:
   - Shows "Link not available" with link icon and descriptive text
   - Renders instead of the normal page when shared fetch errors

5. **Read-only mode**:
   - `showOwnerControls` computed from `!isSharedView && isAuthenticated`
   - Hidden in shared view: Add Items, Share button, Delete Setup, item removal, classification cycling
   - Item Picker, Share Modal, and Delete Dialog all gated behind `showOwnerControls`

## Verification

- `bun run lint`: Our files pass (pre-existing errors in unrelated files only)
- Share token detection and three-way data source logic correct
- All owner controls properly hidden in shared view