Add CLAUDE.md, plan and tasklist

TASKS.md

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+# TASKS.md
+
+Implementation progress tracker for the P2P Poll App.
+
+## Setup
+- [ ] Scaffold Waku project with `bunx create-waku@latest`
+- [ ] Install Automerge dependencies
+- [ ] Install Tailwind CSS v4 and `@tailwindcss/vite`
+- [ ] Create `waku.config.ts` with Tailwind Vite plugin
+- [ ] Create `src/styles/global.css` with Tailwind import
+- [ ] Verify `bun run dev` starts without errors
+
+## Core Logic
+- [ ] Create `src/lib/types.ts` with Poll and PollOption interfaces
+- [ ] Create `src/lib/peer.ts` with localStorage-backed peer ID generation
+- [ ] Implement `createPoll` in `src/lib/poll.ts`
+- [ ] Implement `addOption` in `src/lib/poll.ts`
+- [ ] Implement `vote` and `unvote` in `src/lib/poll.ts`
+- [ ] Implement `hasVoted` in `src/lib/poll.ts`
+
+## Automerge Integration
+- [ ] Create `src/lib/repo.ts` with Repo singleton (WebSocket, BroadcastChannel, IndexedDB)
+- [ ] Create `src/components/Providers.tsx` with RepoContext.Provider
+
+## Pages & Routing
+- [ ] Create `src/pages/_layout.tsx` (server component with Providers and global CSS)
+- [ ] Create `src/pages/index.tsx` with create-poll and join-poll UI
+- [ ] Create `src/pages/poll/[id].tsx` with useDocument and Suspense
+
+## UI Components
+- [ ] Build `src/components/PollView.tsx` (title, options list, vote/unvote buttons)
+- [ ] Add "Add Option" form to PollView
+- [ ] Add shareable link / copy button to PollView
+- [ ] Build `src/components/ConnectionStatus.tsx`
+
+## Tests
+- [ ] Test: getPeerId generates and persists a UUID
+- [ ] Test: createPoll returns poll with title and empty options
+- [ ] Test: addOption appends option with text, id, and empty votes
+- [ ] Test: vote adds peer ID to option's votes array
+- [ ] Test: double-vote prevention (no duplicate entries)
+- [ ] Test: unvote removes peer ID from votes array
+
+## Polish
+- [ ] Tailwind styling (centered layout, card-style poll, vote bars)
+- [ ] Loading states for document sync
+- [ ] Error handling for invalid/missing document IDs
+- [ ] Cross-tab sync testing (BroadcastChannel)
+- [ ] Multi-device sync testing