docs: add phase 32 plan summaries

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/phases/32-setup-sharing-system/32-03-SUMMARY.md

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+# Plan 32-03 Summary: Share Modal UI
+
+**Status:** Complete
+**Commit:** 7003e99
+
+## What was done
+
+1. **Share hooks** (`src/client/hooks/useShares.ts`):
+   - `useShareLinks(setupId)` — Query hook for fetching share links
+   - `useCreateShareLink(setupId)` — Mutation with query invalidation
+   - `useRevokeShareLink(setupId)` — Mutation with query invalidation
+
+2. **ShareModal component** (`src/client/components/ShareModal.tsx`):
+   - Visibility picker with three options (private/link/public) — immediate API call on change
+   - Color-coded options: gray (private), blue (link), green (public)
+   - Share link creation with expiration dropdown (7/14/30 days, no expiration)
+   - Active links list with copy-to-clipboard and revoke actions
+   - Deactivation warning when links exist and switching to private
+   - Empty state "No share links yet"
+   - Escape key and overlay click to close
+   - Responsive: works on desktop and mobile
+
+3. **Setup detail page update** (`src/client/routes/setups/$setupId.tsx`):
+   - Replaced static visibility badge with interactive share button
+   - Desktop: "Share" text + visibility icon
+   - Mobile: Icon-only with 44px touch target
+   - ShareModal rendered with visibility change wired to `updateSetup.mutate`
+
+## Verification
+
+- `bun run lint`: Passes
+- ShareModal follows existing modal patterns (overlay, escape key, z-50)
+- Colors match UI-SPEC: gray-500/gray-50, blue-600/blue-50, green-700/green-50