Merge final group into main (#3 )

2026-05-10 20:10:01 +00:00
35 changed files with 1784 additions and 9962 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,24 +1,2 @@
 # Nuxt dev/build outputs
 .output
 .data
 .nuxt
 .nitro
 .cache
 dist
 # Node dependencies
 node_modules
-
+dist
 # Logs
 logs
 *.log
 # Misc
 .DS_Store
 .fleet
 .idea
 # Local env files
 .env
 .env.*
 !.env.example
--- a/PLAN.md
+++ b/PLAN.md
@@ -0,0 +1,102 @@
 # Plan: Combined P2P Polling App
 ## Overview
 Merge the three subfolder projects into a single TypeScript + Yjs + Vite application at the repo root, combining the best features from each.
 ## Technology Choices
 - **Language:** TypeScript (from project 3) with strict mode
 - **CRDT:** Yjs + y-webrtc + y-indexeddb (from projects 1 & 3)
 - **Build:** Vite (shared by all)
 - **Package manager:** npm
 ## Feature Superset
 From **project 1** (group-efa16e66):
 - Collaborative title editing via Y.Text (real-time character-level sync)
 - Delete options
 - Diff-rendering for poll list (reuse DOM elements)
 - Peer count display via awareness
 - Share section with copy-to-clipboard
 From **project 2** (proposal-8835ffc9):
 - Deadline/timer system (2-minute voting window with countdown)
 - Duplicate detection (case-insensitive)
 From **project 3** (proposal-88461784):
 - TypeScript types & strict mode
 - Modular architecture (state, sync, render, identity, app layers)
 - IndexedDB persistence (offline support)
 - Online/offline connection tracking
 - Input validation (max lengths, empty checks)
 - HTML escaping for XSS prevention
 - ViewModel pattern for clean render layer
 ## Data Model (Yjs)
 ```
 Y.Doc
 ├── poll-meta (Y.Map<string>)
 │   └── title → Y.Text (collaborative editing from project 1)
 ├── poll-options (Y.Map<OptionRecord>)
 │   └── [optionId] → { id, label, createdAt, createdBy }
 ├── poll-votes (Y.Map<string>)
 │   └── [userId] → optionId (single vote per user)
 └── poll-deadline (Y.Map<any>)
    └── deadline → number | null (timestamp, from project 2)
 ```
 ## Architecture & File Structure
 ```
 /
 ├── index.html
 ├── package.json
 ├── tsconfig.json
 ├── vite.config.ts          (if needed for any plugins)
 ├── src/
 │   ├── main.ts             (entry: mount app)
 │   ├── app.ts              (orchestrator: init sync, bind events, manage state)
 │   ├── identity.ts          (getUserId with localStorage persistence)
 │   ├── state.ts            (types, pure functions, ViewModel creation)
 │   ├── sync.ts             (Yjs doc, WebRTC provider, IndexedDB, connection status)
 │   ├── render.ts           (DOM rendering with escapeHtml, diff-rendering for options)
 │   ├── components/
 │   │   ├── PollTitle.ts    (collaborative title input bound to Y.Text)
 │   │   ├── PollList.ts     (diff-rendered option list with sorting)
 │   │   ├── PollOption.ts   (single option: vote bar, vote/delete buttons)
 │   │   ├── AddOption.ts    (input + submit with validation & duplicate check)
 │   │   ├── StatusBar.ts    (connection status + peer count)
 │   │   ├── ShareSection.ts (copy URL to clipboard)
 │   │   └── DeadlineTimer.ts (set deadline + countdown display, from project 2)
 │   └── styles.css          (merged: project 1's design tokens + project 3's glassmorphism)
 ```
 ## Implementation Steps
 ### Step 1: Scaffold root project
 - Create `package.json` with dependencies: yjs, y-webrtc, y-indexeddb, vite, typescript
 - Create `tsconfig.json` (strict, ES2022, bundler resolution)
 - Create `index.html` entry point
 - Create `vite.config.ts` if needed
 ### Step 2: Core layer — identity.ts, state.ts, sync.ts
 - `identity.ts`: port from project 3 (getUserId)
 - `state.ts`: port types from project 3, add deadline types, add ViewModel with deadline/timer info, add vote percentage calculation from project 1
 - `sync.ts`: port from project 3, add Y.Text for title (from project 1), add poll-deadline map, add awareness tracking for peer count (from project 1)
 ### Step 3: App orchestrator — app.ts, main.ts
 - `app.ts`: port from project 3, add deadline handlers, add delete option handler, wire up all components
 - `main.ts`: minimal entry that calls initApp
 ### Step 4: Components
 - `PollTitle.ts`: port collaborative Y.Text editing from project 1, add TypeScript types
 - `AddOption.ts`: merge project 1 (UI/animation) + project 2 (duplicate detection) + project 3 (validation)
 - `PollOption.ts`: port from project 1 (vote bar, percentage, delete button), add TypeScript
 - `PollList.ts`: port diff-rendering from project 1, add TypeScript
 - `StatusBar.ts`: merge project 1 (peer count) + project 3 (online/offline status)
 - `ShareSection.ts`: port from project 1, add TypeScript
 - `DeadlineTimer.ts`: new component porting project 2's deadline/countdown logic to Yjs
 ### Step 5: Styling
 - Merge CSS: use project 1's design tokens and typography as base, incorporate project 3's glassmorphism panel effects, add timer-specific styles from project 2
 ### Step 6: Cleanup
 - Remove three subfolders (after confirming with user)
 - Update root README.md
--- a/README.md
+++ b/README.md
@@ -1,129 +1,56 @@
-# 🗳️ P2P Verified Polling App
+# Polly - P2P Poll App
-A decentralized, real-time polling application built with **Nuxt 3**, **Yjs**, and **WebRTC**. This app allows users to create and participate in polls where every vote is cryptographically signed and verified peer-to-peer, ensuring data integrity without a central authority "owning" the results.
+A lightweight, real-time collaborative polling application that uses [Yjs](https://yjs.dev/) and [WebRTC](https://de.wikipedia.org/wiki/WebRTC) to allow multiple users to create options, vote, and see live results without a centralized database or back-end server.
---
+### 🚀 Features
-## 🌟 Key Features
+- Real-time Collaboration: Instant synchronization of poll titles, options, and votes across all connected peers using [CRDTs (Conflict-free Replicated Data Types)](https://en.wikipedia.org/wiki/Conflict-free_replicated_data_type).
 - P2P Connectivity: Uses WebRTC via [y-webrtc](https://github.com/yjs/y-webrtc) for direct browser-to-browser communication.
 - Dynamic Voting: * Add new options on the fly.
    - Live-updating progress bars and vote tallies.
    - Automatic sorting of options by vote count.
 - Voting Deadline: A shared countdown timer (2 minutes) that locks the poll for all participants once expired.
 - Awareness & Presence: A status bar showing connection health and the number of active peers currently in the room.
 - Local Persistence: Uses [y-indexeddb](https://github.com/yjs/y-indexeddb) to save the poll state locally in your browser, ensuring data isn't lost if you refresh or lose connection.
 - No Setup Required: Unique "rooms" are created via URL parameters, making it easy to share a link and start a poll instantly.
-* **Serverless Real-time Sync:** Uses **Yjs** (CRDTs) and **WebRTC** to sync poll data directly between browsers. No database is required for live updates.
+### 🛠 Tech Stack
 * **Persistence with Nitro:** While the logic is P2P, the **Nuxt/Nitro** backend provides a "Snapshot" service to ensure polls persist even after all peers go offline.
 * **Cryptographic Integrity:** Every vote is signed using **RSA-PSS (Web Crypto API)**. Each user has a unique private key (stored locally via `.pem` files) to ensure votes cannot be forged or tampered with.
 * **Chained Verification:** Implements a "History-Signing" logic where each new vote signs the entire preceding state of the poll, creating a verifiable chain of trust.
 * **Privacy First:** Users identify via UUIDs and Public/Private key pairs rather than traditional accounts.
---
+- Language: TypeScript
 - State Management: Yjs (Shared data types: Y.Doc, Y.Map, Y.Text)
 - Networking: y-webrtc (WebRTC provider for Yjs)
 - UI: Vanilla DOM manipulation (No heavy frameworks like React or Vue)
-## ⚙️ How It Works
+### 💡 How It Works
-### 1. Identity Creation
+- Room Creation: When you open the app, it checks for a ?room= parameter. If none exists, it generates a unique ID and updates the URL.
-When a new user is created, the system generates a unique **UUID (User ID)** and an **RSA Key Pair**. The user is prompted to save their **Private Key** as a `.pem` file, named after their User ID (e.g., `550e8400-e29b.pem`). This file acts as their "Passport"—it is never uploaded to the server and must be kept secure by the user.
+- State Synchronization: The y-webrtc provider connects users with the same room ID. Any change to sync.options or sync.votes is propagated to all users.
 - Local Reactivity: Components use .observe() and .observeDeep() on Yjs types to trigger a re-render of the UI whenever the shared state changes.
 - Voting: Votes are stored in a Y.Map<string> where the key is the User ID and the value is the Option ID. This ensures each user can only have one active vote at a time.
-### 2. Authentication
+You can simulate a second user by opening an incognito Tab.
 Upon returning to the app, users load their local `.pem` file. The application extracts the Private Key for signing and the UUID for identification. No passwords or central servers are involved in this local-first login process.
-### 3. Joining a Poll
+### 🔧 Installation, Development and Deployment
 When a user joins a poll, the app fetches the latest binary snapshot from the server to populate a local **Y.Doc**. This ensures the user sees the current state immediately, even before connecting to other peers.
-### 4. The P2P Mesh
+- Install dependencies:
 The app establishes connections to other active voters via a WebRTC signaling server. Any changes made to the poll (adding options or voting) are broadcasted instantly to all peers using Conflict-free Replicated Data Types (CRDTs) to prevent sync conflicts.
-### 5. Casting a Signed Vote
+    ```npm install yjs y-webrtc y-indexeddb```
 To ensure security, the voting process follows a strict cryptographic chain:
 * The app captures the current list of votes.
 * It appends the new vote data (User ID + Timestamp).
 * It signs the **entire array** (the previous history + the new vote) using the user's RSA private key.
 * The signed update is merged into the shared Yjs Map and broadcasted.
-### 6. Distributed Verification
+- Development:
-Whenever a peer receives a new update, they fetch the voter's **Public Key** from the API. They then verify that the signature matches the current state of the poll history. If a signature is invalid or the history has been tampered with, the vote is rejected by the peer's local state.
+    
    ```npm run dev```
---
+- Deployment:
    - The code currently uses an Y-Webrtc-Signaling-Server at localhost:4444 that starts with `npm run dev` for development.
    - To deploy the App, you need to set up a publicly available signaling server and set the address in the `synx.ts`. E.g. with Docker using the [funnyzak/y-webrtc-signaling](https://hub.docker.com/r/funnyzak/y-webrtc-signaling) image:
-## 🛠️ Tech Stack
+        ```version: '3.1'
-
+        services:
-* **Framework:** [Nuxt 3](https://nuxt.com/) (Vue 3 + TypeScript)
+            y-webrtc-signaling:
-* **Conflict-Free Replicated Data Types (CRDT):** [Yjs](https://yjs.dev/)
+                container_name: y-webrtc-signaling
-* **P2P Transport:** `y-webrtc`
+                image: funnyzak/y-webrtc-signaling:latest
-* **Security:** Web Crypto API (SubtleCrypto)
+                restart: always
-* **Backend/Storage:** Nitro (Nuxt's server engine) with filesystem storage drivers
+                network_mode: bridge
-
+                ports:
-# AI Disclaimer
+                - "4444:4444"
-
+                dns: 8.8.8.8```
 This App was developed with the assistance of AI.
 # Nuxt Minimal Starter
 Look at the [Nuxt documentation](https://nuxt.com/docs/getting-started/introduction) to learn more.
 ## Setup
 Make sure to install dependencies:
 ```bash
 # npm
 npm install
 # pnpm
 pnpm install
 # yarn
 yarn install
 # bun
 bun install
 ```
 ## Development Server
 Start the development server on `http://localhost:3000`:
 ```bash
 # npm
 npm run dev
 # pnpm
 pnpm dev
 # yarn
 yarn dev
 # bun
 bun run dev
 ```
 ## Production
 Build the application for production:
 ```bash
 # npm
 npm run build
 # pnpm
 pnpm build
 # yarn
 yarn build
 # bun
 bun run build
 ```
 Locally preview production build:
 ```bash
 # npm
 npm run preview
 # pnpm
 pnpm preview
 # yarn
 yarn preview
 # bun
 bun run preview
 ```
 Check out the [deployment documentation](https://nuxt.com/docs/getting-started/deployment) for more information.
--- a/app/app.vue
+++ b/app/app.vue
@@ -1,175 +0,0 @@
 <style>
 /* Basic styling to make it look clean */
 body {
  font-family: system-ui, -apple-system, sans-serif;
  background-color: #f4f4f9;
  color: #333;
  margin: 0;
  display: flex;
  justify-content: center;
  padding: 2rem;
 }
 header {
  margin-bottom: 2rem;
  text-align: center;
 }
 h1 { margin: 0 0 0.5rem 0; }
 input {
  flex-grow: 1;
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
 }
 button,
 .button {
  background: #3b82f6;
  color: white;
  border: none;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  transition: background 0.2s;
 }
 button:hover,
 .button:hover { background: #2563eb; }
 .status {
  font-size: 0.85rem;
  color: #666;
 }
 .status .connected { color: #10b981; font-weight: bold; }
 .connectionFailed { color: #FF2525; font-weight: bold; }
 .poll-container {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 500px;
 }
 .back-btn { 
  margin-left: 1rem; 
  padding: 0.2rem 0.5rem; 
  font-size: 0.7rem; 
  background: #64748b; 
 }
 /* Hide the actual file input */
 input[type="file"] {
  display: none;
 }
 </style>
 <template>
    <div class="poll-container">
        <header>
            <h1 @click="activePollId = null" style="cursor:pointer">P2P Polling App 🗳️</h1>
            <div class="status">
                <button v-if="activePollId" @click="activePollId = null" class="back-btn">← Back To List</button>
                <span :class="{ 'connected': isConnected }">
                    ● {{ isConnected ? 'Synced' : 'Waiting for other Peers...' }}
                </span>
                <span> | Peers online: {{ connectedPeers }}</span>
                <h2 v-if="connectionAttempFailed" class="connectionFailed">⚠ Connection to Signaling Server Failed!</h2>
                <div v-if="user===null" style="margin-top: 10px;">
                    <button @click="createUser">Create New User</button>
                    Or
                    <label title="Select Key File">
                        <span class="button">Login</span>
                        <input 
                            type="file"
                            accept=".pem"
                            @change="loadUser"
                        />
                    </label>
                </div>
            </div>
        </header>
        <main>
            <PollList v-if="!activePollId" :userid="user?.userid" @select-poll="selectPoll" />
            <Poll v-else :activePollId="activePollId" :userid="user?.userid" :poll-data="pollData" :addOption="addOption" :vote="vote"/>
        </main>
    </div>
 </template>
 <script setup lang="ts">
    import { v4 as uuidv4 } from 'uuid';
    const activePollId = ref<string | null>(null);
    const user = shallowRef<UserData | null>(null);
    const { pollData, isConnected, connectionAttempFailed, connectedPeers, addOption, vote } = usePoll(activePollId,user);
    const selectPoll = (id: string) => {
        activePollId.value = id;
    };
    const createUser = async () => {
        try {
            const keypair : CryptoKeyPair = await generateUserKeyPair();
            console.log('keypair:', keypair);
            const uuid = uuidv4();
            user.value = {
                userid: uuid,
                private_key: keypair.privateKey,
                public_key: keypair.publicKey,
            };
            const prvKeyString = await exportPrivateKey(keypair.privateKey);
            await savePrivateKeyToFile(prvKeyString,uuid+".pem")
            const pubKeyString = await exportPublicKey(keypair.publicKey);
            await $fetch(`/api/users/${uuid}`, {
                method: 'POST',
                body: { public_key: pubKeyString }
            });
        } catch (err) {
            user.value = null
            console.error("Failed to create new User!", err);
        }
    };
    const loadUser = async (event: Event) => {
        const target = event.target as HTMLInputElement;
        const file = target.files?.[0];
        if (file) {
            try {
                const content = await file.text();
                console.log("File loaded: ");
                if (file.name && content) {
                    try {
                        const uuid = file.name.replace(".pem", "");
                        // Standardize the string for the importer
                        const pkBase64 = content.replace(/-----BEGIN PRIVATE KEY-----|-----END PRIVATE KEY-----/g, "").replace(/\s+/g, "");
                        const key = await stringToCryptoKey(pkBase64, "private");
                        user.value = {
                            userid: uuid,
                            private_key: key,
                            public_key: undefined, // Note: You might need to import a pub key too!
                        };
                        console.log("Login successful for:", uuid);
                    } catch (err) {
                        console.error("Crypto Import Error:", err);
                        alert("The file content is not a valid Private Key.");
                    }
                }
            } catch (e) {
                console.error("Failed to read file", e);
            }
        }
    };
 </script>
--- a/app/components/Poll.vue
+++ b/app/components/Poll.vue
@@ -1,83 +0,0 @@
 <style scoped>
 .poll-list {
  list-style: none;
  padding: 0;
  margin: 0;
 }
 .poll-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  margin-bottom: 0.5rem;
 }
 .poll-title { 
  font-size: 1.1rem; 
  color: #3b82f6; 
  text-transform: uppercase; 
  letter-spacing: 1px;
 }
 .add-option-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
 }
 .option-name { font-weight: 500; }
 .vote-section { display: flex; align-items: center; gap: 1rem; }
 .vote-count { font-size: 0.9rem; color: #475569; }
 .vote-btn { padding: 0.4rem 0.8rem; background: #10b981; }
 .vote-btn:hover { background: #059669; }
 .vote-btn:disabled,
 .vote-btn[disabled] { background: #888888; }
 .vote-btn:disabled:hover,
 .vote-btn[disabled]:hover { background: #AAAAAA; }
 </style>
 <template>
    <div>
        <h2 class="poll-title">Poll: {{ activePollId }}</h2>
        <p v-if="Object.keys(pollData).length==0">Note: Add at least one Option to save the Poll.</p>
        <form @submit.prevent="handleAddNewOption" class="add-option-form" v-if="userid">
            <input v-model="newOption" placeholder="Enter a new poll option..." required />
            <button type="submit">Add Option</button>
        </form>
        <ul class="poll-list">
            <li v-for="(votes, optionName) in pollData" :key="optionName" class="poll-item">
                <span class="option-name">{{ optionName }}</span>
                <div class="vote-section">
                    <span class="vote-count">{{ votes.length }} {{ votes.length === 1 ? 'vote' : 'votes' }}</span>
                    <button @click="vote(String(optionName))" class="vote-btn" :disabled="userid==undefined || voted(votes)">+1</button>
                </div>
            </li>
        </ul>
    </div>
 </template>
 <script setup lang="ts">
    import type { PollProps, SignedData, VoteData } from '@/utils/types'
    const props = defineProps<PollProps>()
    const newOption = ref('');
    const handleAddNewOption = () => {
        props.addOption(newOption.value);
        newOption.value = '';
    };
    const voted = (votes: SignedData<VoteData>[]) => {
        for(let vote of votes){
            if(vote.data.userid == props.userid){
                return true;
            }
        }
        return false;
    }
 </script>
--- a/app/components/PollList.vue
+++ b/app/components/PollList.vue
@@ -1,64 +0,0 @@
 <style scoped>
    .poll-list { margin-top: 1rem; }
    .empty-state { text-align: center; color: #94a3b8; font-style: italic; }
    .create-poll { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }
    .poll-links { list-style: none; padding: 0; }
    .poll-link-btn {
        width: 100%;
        text-align: left;
        background: #f1f5f9;
        color: #1e293b;
        margin-bottom: 0.5rem;
        display: flex;
        justify-content: space-between;
    }
    .poll-link-btn:hover { background: #e2e8f0; }
 </style>
 <template>
    <div class="poll-list">
        <h3>Available Polls</h3>
        <ul v-if="polls && polls.length > 0" class="poll-links">
            <li v-for="id in polls" :key="id">
                <button class="poll-link-btn" @click="$emit('select-poll', id)">
                    {{ id }} <span>→</span>
                </button>
            </li>
        </ul>
        <p v-else class="empty-state">No polls found. Create the first one!</p>
        <div class="create-poll" v-if="userid !== undefined">
            <input 
                v-model="newPollId" 
                placeholder="Enter new poll name..." 
                @keyup.enter="createPoll"
            />
            <button @click="createPoll">Create & Join</button>
        </div>
    </div>
 </template>
 <script setup lang="ts">
    import type { PollListProps } from '@/utils/types'
    const props = defineProps<PollListProps>()
    const newPollId = ref('');
    const polls = ref<string[]>([]);
    // Fetch existing polls on mount
    const fetchPolls = async () => {
        const data = await $fetch<{ polls: string[] }>('/api/polls');
        polls.value = data.polls;
    };
    const createPoll = () => {
        const id = newPollId.value.trim().toLowerCase().replace(/\s+/g, '-');
        if (id) {
            // In a real app, you might want to POST to create it first, 
            // but here we just navigate to it and let usePoll handle the save.
            emit('select-poll', id);
        }
    };
    const emit = defineEmits(['select-poll']);
    onMounted(fetchPolls);
 </script>
--- a/app/composables/usePoll.ts
+++ b/app/composables/usePoll.ts
@@ -1,131 +0,0 @@
 // composables/usePoll.ts
 import { ref, watch, onUnmounted } from 'vue';
 import * as Y from 'yjs';
 export const usePoll = (pollId: Ref<string | null>, user: Ref<UserData | null>) => {
    const pollData = ref<PollData>({});
    const isConnected = ref(false);
    const connectionAttempFailed = ref(false);
    const connectedPeers = ref(1);
    let ydoc: Y.Doc | null = null;
    let provider: any = null;
    let yMap: Y.Map<SignedData<VoteData>[]> | null = null;
    const cleanup = () => {
    if (provider) provider.disconnect();
        if (ydoc) ydoc.destroy();
        isConnected.value = false;
        pollData.value = {};
    };
    const initPoll = async (id: string) => {
        cleanup(); // Clear previous session
        ydoc = new Y.Doc();
        // 1. Fetch Snapshot from Nuxt API
        try {
            const response = await $fetch<{ update: number[] | null }>(`/api/polls/${id}`).catch((e) => {
                console.error("Failed to get poll: " + id,e)
            });
            //trust the server without verification.
            if (response?.update) {
                Y.applyUpdate(ydoc, new Uint8Array(response.update));
            }
        } catch (err) {
            console.error('Persistence fetch failed', err);
        }
        yMap = ydoc.getMap<SignedData<VoteData>[]>('shared-poll');
        // 2. Local State Sync
        yMap.observe(async () => {
            await performUpdateAndVerify();
            saveStateToServer(id);
        });
        await performUpdateAndVerify();
        // 3. P2P Connection
        const { WebrtcProvider } = await import('y-webrtc');
        provider = new WebrtcProvider(`nuxt-p2p-${id}`, ydoc, {
            signaling: ["ws://localhost:4444", "ws://lynxpi.ddns.net:4444"]
        });
        provider.on('synced', (arg: {synced: boolean}) => {
            isConnected.value = arg.synced;
            console.log('Connection synced:', arg.synced) // "connected" or "disconnected"
        });
        provider.on('status', (event: { connected: boolean }) => {
            console.log('Connection status:', event.connected) // "connected" or "disconnected"
        })
        provider.on('peers', (data: any) => {
            connectedPeers.value = data.webrtcPeers.length + 1
        });
    };
    const saveStateToServer = async (id: string) => {
        if (!ydoc) return;
        const stateUpdate = Y.encodeStateAsUpdate(ydoc);
        await $fetch(`/api/polls/${id}`, {
            method: 'POST',
            body: { update: Array.from(stateUpdate) }
        }).catch((e) => {
            console.error("Failed to update poll",e)
        });
    };
    // Watch for ID changes (e.g., user clicks a link or goes back)
    watch(pollId, (newId) => {
        if (newId && import.meta.client) {
            initPoll(newId);
        } else {
            cleanup();
        }
    }, { immediate: true });
    onUnmounted(cleanup);
    const addOption = (optionName: string) => {
        if (yMap && !yMap.has(optionName)) yMap.set(optionName, []);
    };
    const performUpdateAndVerify = async () => {
        const pollDataUpdate = yMap!.toJSON();
        console.log("Poll Data Update: ", pollDataUpdate)
        for(var option in pollDataUpdate){
            console.log("verifying votes for option: " + option);
            const votes = pollDataUpdate[option] || [];
            const verified = await verifyAllVotesForOption(votes);
            if(!verified){
                console.error("Failed to verify option: "+option)
                return;
            }
        }
        console.log("All options verified! :)")
        pollData.value = pollDataUpdate
    }
    const vote = async (optionName: string) => {
        const currentUser = user.value;
        if (currentUser != undefined && yMap?.has(optionName)) {
            const voteData = [...(yMap.get(optionName) || [])];
            if(voteData != undefined && currentUser.private_key){
                var unsignedVoteData : VoteData = {
                    userid: currentUser.userid,
                    timestamp: new Date().toISOString()
                }
                var newVote : SignedData<VoteData> = {
                    data: unsignedVoteData,
                    signature: "",
                }
                voteData?.push(newVote)
                const signature = await signVote(voteData,currentUser.private_key);
                newVote.signature=signature
                yMap?.set(optionName, voteData);
            }
        }
    };
    return { pollData, isConnected, connectionAttempFailed, connectedPeers, addOption, vote };
 };
--- a/app/composables/user.ts
+++ b/app/composables/user.ts
@@ -1,2 +0,0 @@
 export const user = (user: Ref<UserData | null>) => {
 }
--- a/app/utils/crypto.ts
+++ b/app/utils/crypto.ts
@@ -1,187 +0,0 @@
 // utils/crypto.ts
 export const generateUserKeyPair = async () => {
  return await window.crypto.subtle.generateKey(
    {
      name: "RSASSA-PKCS1-v1_5",
      modulusLength: 2048,
      publicExponent: new Uint8Array([1, 0, 1]), // 65537
      hash: "SHA-256",
    },
    true, // extractable
    ["sign", "verify"]
  );
 };
 export const signVote = async (data: any, privateKey: CryptoKey) => {
  const encoder = new TextEncoder();
  const encodedData = encoder.encode(JSON.stringify(data));
  const signature = await window.crypto.subtle.sign(
    "RSASSA-PKCS1-v1_5",
    privateKey,
    encodedData
  );
  // Convert to Base64 or Hex to store in Yjs easily
  return btoa(String.fromCharCode(...new Uint8Array(signature)));
 };
 export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
  const encoder = new TextEncoder();
  const encodedData = encoder.encode(JSON.stringify(data));
  // Convert Base64 back to Uint8Array
  const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
  return await window.crypto.subtle.verify(
    "RSASSA-PKCS1-v1_5",
    publicKey,
    signature,
    encodedData
  );
 };
 /**
 * Verifies a specific vote within an array of votes by 
 * reconstructing the "signed state" at that point in time.
 */
 export const verifyChainedVote = async (
    voteData: SignedData<VoteData>[], 
    index: number
 ) => {
    const voteToVerify = voteData[index];
    console.log("Verifying vote: " + voteToVerify)
    if(voteToVerify) {
        // 1. Reconstruct the exact data state the user signed
        // We need the array exactly as it was when they pushed their vote
        const historicalState = voteData.slice(0, index + 1).map((v, i) => {
            if (i === index) {
                // For the current vote, the signature must be empty string
                // because it wasn't signed yet when passed to signVote
                return { ...v, signature: "" };
            }
            return v;
        });
        try {
            // 2. Fetch public key
            const response = await $fetch<{ public_key: string }>(`/api/users/${voteToVerify.data.userid}`);
            console.log("Got key: ",response)
            const pubKey = await stringToCryptoKey(response.public_key, 'public');
            console.log("Using pubKey to verify Vote.")
            // 3. Verify: Does this historicalState match the signature?
            return await verifyVote(historicalState, voteToVerify.signature, pubKey);
        } catch (err) {
            console.error("Verification failed")
            console.error(err);
            return false;
        }
    }
    console.error("Vote is undefined or null");
    return false;
 };
 export const verifyAllVotesForOption = async (votes: SignedData<VoteData>[]) => {
    console.log("verifying votes for option ",votes);
    for (let i = votes.length-1; i >= 0 ; i--) {
        const isValid = await verifyChainedVote(votes, i);
        if(!isValid){
            console.error("Error! Invalid Vote at: " + i,votes)
            return false;
        }
    }
    return true;
 };
 // Helper to convert ArrayBuffer to Base64 string
 const bufferToBase64 = (buf: ArrayBuffer) => 
  window.btoa(String.fromCharCode(...new Uint8Array(buf)));
 export const exportPublicKey = async (key: CryptoKey) => {
  // Export Public Key
  const exportedPublic = await window.crypto.subtle.exportKey("spki", key);
  const publicKeyString = bufferToBase64(exportedPublic);
  return publicKeyString;
 };
 export const exportPrivateKey = async (key: CryptoKey) => {
  // Export Private Key
  const exportedPrivate = await window.crypto.subtle.exportKey("pkcs8", key);
  const privateKeyString = bufferToBase64(exportedPrivate);
  return privateKeyString;
 };
 /**
 * Converts a Base64 string back into a usable CryptoKey object
 * @param keyStr The Base64 string (without PEM headers)
 * @param type 'public' or 'private'
 */
 export const stringToCryptoKey = async (keyStr: string, type: 'public' | 'private'): Promise<CryptoKey> => {
  // 1. Convert Base64 string to a Uint8Array (binary)
  const binaryString = window.atob(keyStr);
  const bytes = new Uint8Array(binaryString.length);
  for (let i = 0; i < binaryString.length; i++) {
    bytes[i] = binaryString.charCodeAt(i);
  }
  // 2. Identify the format based on the key type
  // Public keys usually use 'spki', Private keys use 'pkcs8'
  const format = type === 'public' ? 'spki' : 'pkcs8';
  const usages: KeyUsage[] = type === 'public' ? ['verify'] : ['sign'];
  // 3. Import the key
  return await window.crypto.subtle.importKey(
    format,
    bytes.buffer,
    {
      name: "RSASSA-PKCS1-v1_5",
      hash: "SHA-256",
    },
    true, // extractable (set to false if you want to lock it in memory)
    usages
  );
 };
 export const savePrivateKeyToFile = (privateKeyStr: string, filename: string) => {
  // Optional: Wrap in PEM headers for standard formatting
  const pemHeader = "-----BEGIN PRIVATE KEY-----\n";
  const pemFooter = "\n-----END PRIVATE KEY-----";
  const fileContent = pemHeader + privateKeyStr + pemFooter;
  const blob = new Blob([fileContent], { type: "text/plain" });
  const url = URL.createObjectURL(blob);
  const link = document.createElement("a");
  link.href = url;
  link.download = filename;
  document.body.appendChild(link);
  link.click();
  // Cleanup
  document.body.removeChild(link);
  URL.revokeObjectURL(url);
 };
 export const loadPrivateKeyFromFile = async (file: File): Promise<string> => {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = (e) => {
      const content = e.target?.result as string;
      // Clean up the string by removing PEM headers and newlines
      const cleanKey = content
        .replace("-----BEGIN PRIVATE KEY-----", "")
        .replace("-----END PRIVATE KEY-----", "")
        .replace(/\s+/g, ""); // Removes all whitespace/newlines
      resolve(cleanKey);
    };
    reader.onerror = () => reject("Error reading file");
    reader.readAsText(file);
  });
 };
--- a/app/utils/types.ts
+++ b/app/utils/types.ts
@@ -1,36 +0,0 @@
 export interface PollProps {
    userid: string | undefined,
    activePollId: string,
    pollData: PollData,
    addOption: (name: string) => void,
    vote: (optionName: string) => void
 }
 export interface PollListProps {
    userid: string | undefined,
 }
 export interface PollData extends Record<string, SignedData<VoteData>[]> {
 }
 export interface SignedData<T> {
    data: T,
    signature: string
 }
 export interface VoteData {
    userid: string,
    timestamp: string
 }
 export interface OptionData {
    userid: string,
    timestamp: string,
    optionName: string
 }
 export interface UserData {
    userid: string,
    private_key: CryptoKey | undefined,
    public_key: CryptoKey | undefined
 }
--- a/index.html
+++ b/index.html
@@ -0,0 +1,12 @@
 <!doctype html>
 <html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Polly — P2P Polls</title>
  </head>
  <body>
    <div id="app"></div>
    <script type="module" src="/src/main.ts"></script>
  </body>
 </html>
--- a/nuxt.config.ts
+++ b/nuxt.config.ts
@@ -1,23 +0,0 @@
 // https://nuxt.com/docs/api/configuration/nuxt-config
 export default defineNuxtConfig({
  compatibilityDate: '2025-07-15',
  devtools: { enabled: true },
  vite: {
    optimizeDeps: {
      include: ['yjs', 'y-webrtc']
    }
  },
  // ... existing config
  nitro: {
    storage: {
      polls: {
        driver: 'fs',
        base: './.data/polls'
      },
      users: {
        driver: 'fs',
        base: './.data/users'
      }
    }
  }
 })
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -1,20 +1,21 @@
 {
-  "name": "p2p-poll",
+  "name": "polly-p2p-poll",
-  "type": "module",
+  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
-    "build": "nuxt build",
+    "dev": "PORT=4444 npx y-webrtc & vite",
-    "dev": "PORT=4444 npx y-webrtc & nuxt dev",
+    "build": "tsc --noEmit && vite build",
-    "generate": "nuxt generate",
+    "preview": "vite preview"
    "preview": "nuxt preview",
    "postinstall": "nuxt prepare"
  },
  "dependencies": {
-    "nuxt": "^4.1.3",
+    "y-indexeddb": "^9.0.12",
    "uuid": "^13.0.0",
    "vue": "^3.5.30",
    "vue-router": "^5.0.3",
    "y-webrtc": "^10.3.0",
-    "yjs": "^13.6.30"
+    "yjs": "^13.6.27",
    "uuid": "^13.0.0"
  },
  "devDependencies": {
    "typescript": "^5.9.2",
    "vite": "^7.1.5"
  }
 }
--- a/public/favicon.ico
+++ b/public/favicon.ico
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -1,2 +0,0 @@
 User-Agent: *
 Disallow:
--- a/server/api/polls/[id].ts
+++ b/server/api/polls/[id].ts
@@ -1,68 +0,0 @@
 import * as Y from 'yjs';
 // server/api/polls/[id].ts
 export default defineEventHandler(async (event) => {
    const method = event.node.req.method;
    const pollId = getRouterParam(event, 'id');
    // We use Nitro's built-in storage. 
    // 'polls' is the storage namespace.
    const storage = useStorage('polls'); 
    if (!pollId) {
        throw createError({ statusCode: 400, statusMessage: 'Poll ID required' });
    }
    // GET: Fetch the saved Yjs document state
    if (method === 'GET') {
        const data = await storage.getItem(`poll:${pollId}`);
        // Return the array of numbers (or null if it doesn't exist yet)
        return { update: data || null };
    }
    // POST: Save a new Yjs document state
    if (method === 'POST') {
        const body = await readBody(event);
        if (body.update && Array.isArray(body.update)) {
            // create a temp Y.Doc to encode the Data
            const tempDoc = new Y.Doc();
            Y.applyUpdate(tempDoc, new Uint8Array(body.update));
            const yMap = tempDoc.getMap('shared-poll');
            const pollData = yMap.toJSON();
            // verify pollData
            for(var option in pollData){
                const votes = pollData[option] || [];
                var pubKeys: CryptoKey[] = [];
                const verifyAllVotesForOption = async (votes: SignedData<VoteData>[]) => {
                    console.log("verifying votes for option " + option,votes);
                    // check last votes first. if there is something wrong, its likely in the last vote.
                    for (let i = votes.length-1; i >= 0 ; i--) {
                        const userStorage = useStorage('users'); 
                        const votePubKeyString = await userStorage.getItem(`user:${votes[i]?.data.userid}`);
                        //console.log("Using public key: "+votePubKeyString)
                        const votePubKey = await stringToCryptoKey(String(votePubKeyString),'public')
                        const isValid = await verifyChainedVote(votes, i,votePubKey);
                        if(!isValid){
                            console.error("Error! Invalid Vote at: " + i,votes)
                            return false;
                        }
                    }
                    return true;
                };
                const verified = await verifyAllVotesForOption(votes);
                if(!verified){
                    console.error("Failed to verify option: "+option)
                    throw createError({ statusCode: 400, statusMessage: 'PollData contains unverifyable content!' });
                }
            }
            // Save the binary update (sent as an array of numbers) to storage
            await storage.setItem(`poll:${pollId}`, body.update);
            return { success: true };
        }
        throw createError({ statusCode: 400, statusMessage: 'Invalid update payload' });
    }
 });
--- a/server/api/polls/index.get.ts
+++ b/server/api/polls/index.get.ts
@@ -1,15 +0,0 @@
 // server/api/polls/index.get.ts
 export default defineEventHandler(async () => {
    const storage = useStorage('polls');
    // Get all keys in the 'polls' namespace
    const allKeys = await storage.getKeys();
    // Filter for our specific poll prefix and strip it for the UI
    // poll:my-id -> my-id
    const polls = allKeys
        .filter(key => key.startsWith('poll:'))
        .map(key => key.replace('poll:', ''));
    return { polls };
 });
--- a/server/api/users/[id].ts
+++ b/server/api/users/[id].ts
@@ -1,41 +0,0 @@
 // server/api/users/[id].ts
 export default defineEventHandler(async (event) => {
    const method = event.node.req.method;
    const userId = getRouterParam(event, 'id');
    // We use Nitro's built-in storage. 
    // 'polls' is the storage namespace.
    const storage = useStorage('users'); 
    if (!userId) {
        throw createError({ statusCode: 400, statusMessage: 'User ID required' });
    }
    // GET: Fetch the saved Yjs document state
    if (method === 'GET') {
        const data = await storage.getItem(`user:${userId}`);
        // Return the array of numbers (or null if it doesn't exist yet)
        return { public_key: data };
    }
    // POST: Save a new Yjs document state
    if (method === 'POST') {
        const body = await readBody(event);
        if (body.public_key) {
            const data = await storage.getItem(`user:${userId}`);
            if (data == undefined || data == null) {
                // Save the binary update (sent as an array of numbers) to storage
                await storage.setItem(`user:${userId}`, body.public_key);
                console.log("New User created: " + userId)
                console.log("Public Key: " + body.public_key);
                return { success: true };
            }
            throw createError({ statusCode: 400, statusMessage: 'User already exists.' });
        }
        throw createError({ statusCode: 400, statusMessage: 'Invalid update payload' });
    }
 });
--- a/server/utils/crypto.ts
+++ b/server/utils/crypto.ts
@@ -1,86 +0,0 @@
 import { SignedData, VoteData } from "./types";
 /**
 * Gets the WebCrypto API regardless of environment (Node vs Browser)
 */
 const getCrypto = () => {
  return (globalThis as any).crypto;
 };
 export const verifyVote = async (data: any, signatureStr: string, publicKey: CryptoKey) => {
  const encoder = new TextEncoder();
  const encodedData = encoder.encode(JSON.stringify(data));
  // Convert Base64 back to Uint8Array
  const signature = Uint8Array.from(atob(signatureStr), c => c.charCodeAt(0));
  return await getCrypto().subtle.verify(
    "RSASSA-PKCS1-v1_5",
    publicKey,
    signature,
    encodedData
  );
 };
 /**
 * Verifies a specific vote within an array of votes by 
 * reconstructing the "signed state" at that point in time.
 */
 export const verifyChainedVote = async (
    voteData: SignedData<VoteData>[], 
    index: number,
    pubKey: CryptoKey
 ) => {
    const voteToVerify = voteData[index];
    console.log("Verifying vote: " + voteToVerify)
    if(voteToVerify) {
        // 1. Reconstruct the exact data state the user signed
        // We need the array exactly as it was when they pushed their vote
        const historicalState = voteData.slice(0, index + 1).map((v, i) => {
            if (i === index) {
                // For the current vote, the signature must be empty string
                // because it wasn't signed yet when passed to signVote
                return { ...v, signature: "" };
            }
            return v;
        });
        try {
            // 3. Verify: Does this historicalState match the signature?
            return await verifyVote(historicalState, voteToVerify.signature, pubKey);
        } catch (err) {
            console.error("Verification failed")
            console.error(err);
            return false;
        }
    }
    console.error("Vote is undefined or null");
    return false;
 };
 /**
 * Converts a Base64 string back into a usable CryptoKey object
 * @param keyStr The Base64 string (without PEM headers)
 * @param type 'public' or 'private'
 */
 export const stringToCryptoKey = async (keyStr: string, type: 'public' | 'private'): Promise<CryptoKey> => {
  // 1. Convert Base64 string to a Uint8Array (binary)
  const bytes = Buffer.from(keyStr, 'base64');
  // 2. Identify the format based on the key type
  // Public keys usually use 'spki', Private keys use 'pkcs8'
  const format = type === 'public' ? 'spki' : 'pkcs8';
  const usages: KeyUsage[] = type === 'public' ? ['verify'] : ['sign'];
  // 3. Import the key
  return await getCrypto().subtle.importKey(
    format,
    bytes,
    {
      name: "RSASSA-PKCS1-v1_5",
      hash: "SHA-256",
    },
    true, // extractable (set to false if you want to lock it in memory)
    usages
  );
 };
--- a/server/utils/types.ts
+++ b/server/utils/types.ts
@@ -1,36 +0,0 @@
 export interface PollProps {
    userid: string | undefined,
    activePollId: string,
    pollData: PollData,
    addOption: (name: string) => void,
    vote: (optionName: string) => void
 }
 export interface PollListProps {
    userid: string | undefined,
 }
 export interface PollData extends Record<string, SignedData<VoteData>[]> {
 }
 export interface SignedData<T> {
    data: T,
    signature: string
 }
 export interface VoteData {
    userid: string,
    timestamp: string
 }
 export interface OptionData {
    userid: string,
    timestamp: string,
    optionName: string
 }
 export interface UserData {
    userid: string,
    private_key: CryptoKey | undefined,
    public_key: CryptoKey | undefined
 }
--- a/src/app.ts
+++ b/src/app.ts
@@ -0,0 +1,139 @@
 import { getUserId } from "./identity";
 import {
  addOption,
  toggleVote,
  deleteOption,
  setDeadline,
  clearDeadline,
  createViewModel,
 } from "./state";
 import { initSync } from "./sync";
 import { StatusBar } from "./components/StatusBar";
 import { PollTitle } from "./components/PollTitle";
 import { AddOption } from "./components/AddOption";
 import { PollList } from "./components/PollList";
 import { ShareSection } from "./components/ShareSection";
 import { DeadlineTimer } from "./components/DeadlineTimer";
 const ROOM_PARAM = "room";
 function createRoomId(): string {
  if (typeof crypto.randomUUID === "function") {
    return `poll-${crypto.randomUUID().slice(0, 8)}`;
  }
  return `poll-${Math.random().toString(36).slice(2, 10)}`;
 }
 function ensureRoomId(): string {
  const url = new URL(window.location.href);
  let roomId = url.searchParams.get(ROOM_PARAM)?.trim();
  if (!roomId) {
    roomId = createRoomId();
    url.searchParams.set(ROOM_PARAM, roomId);
    window.history.replaceState({}, "", url);
  }
  return roomId;
 }
 export function initApp(container: HTMLElement): () => void {
  const roomId = ensureRoomId();
  const userId = getUserId();
  const sync = initSync(roomId);
  const shareUrl = window.location.href;
  // --- Actions ---
  const actions = {
    addOption: (label: string) => {
      const vm = createViewModel(getViewModelParams());
      if (vm.votingClosed) return;
      return addOption(sync.options, label, userId);
    },
    toggleVote: (optionId: string) => {
      const vm = createViewModel(getViewModelParams());
      if (vm.votingClosed) return;
      toggleVote(sync.votes, userId, optionId);
    },
    deleteOption: (optionId: string) => {
      deleteOption(sync.options, sync.votes, optionId);
    },
    startDeadline: (durationMs: number) => {
      setDeadline(sync.deadlineMap, durationMs);
    },
    clearDeadline: () => {
      clearDeadline(sync.deadlineMap);
    },
  };
  function getViewModelParams() {
    return {
      yTitle: sync.yTitle,
      options: sync.options,
      votes: sync.votes,
      deadlineMap: sync.deadlineMap,
      roomId,
      shareUrl,
      connectionStatus: sync.getConnectionStatus(),
      peerCount: sync.getPeerCount(),
      userId,
    };
  }
  // --- Build UI ---
  // Header
  const header = document.createElement("header");
  header.className = "app-header";
  const wordmark = document.createElement("div");
  wordmark.className = "app-wordmark";
  wordmark.innerHTML = `
    <svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
      <rect x="2" y="4" width="16" height="2.5" rx="1.25" fill="currentColor"/>
      <rect x="2" y="8.75" width="11" height="2.5" rx="1.25" fill="currentColor" opacity="0.6"/>
      <rect x="2" y="13.5" width="13" height="2.5" rx="1.25" fill="currentColor" opacity="0.35"/>
    </svg>
    <span>Polly</span>
  `;
  const statusBar = StatusBar(sync.provider);
  header.append(wordmark, statusBar);
  // Main card
  const card = document.createElement("main");
  card.className = "app-card";
  const pollTitle = PollTitle(sync.doc, sync.yTitle);
  const addOptionComponent = AddOption((label: string) => {
    const result = actions.addOption(label);
    if (result && !result.ok) return result.error;
    return null;
  });
  const pollList = PollList(sync.options, sync.votes, userId, () => {
    const vm = createViewModel(getViewModelParams());
    return vm.votingClosed;
  }, actions.toggleVote, actions.deleteOption);
  const deadlineTimer = DeadlineTimer(
    sync.deadlineMap,
    actions.startDeadline,
    actions.clearDeadline,
  );
  card.append(pollTitle, addOptionComponent, deadlineTimer, pollList);
  // Footer
  const footer = document.createElement("footer");
  footer.className = "app-footer";
  footer.appendChild(ShareSection(roomId));
  container.append(header, card, footer);
  // --- Cleanup ---
  return () => {
    sync.destroy();
  };
 }
--- a/src/components/AddOption.ts
+++ b/src/components/AddOption.ts
@@ -0,0 +1,66 @@
 export function AddOption(
  onSubmit: (label: string) => string | null,
 ): HTMLElement {
  const wrapper = document.createElement("div");
  wrapper.className = "add-option-wrapper";
  const input = document.createElement("input");
  input.type = "text";
  input.className = "add-option-input";
  input.placeholder = "Add an option\u2026";
  input.maxLength = 100;
  input.setAttribute("aria-label", "New poll option");
  const btn = document.createElement("button");
  btn.className = "add-option-btn";
  btn.setAttribute("aria-label", "Add option");
  btn.innerHTML = `
    <svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
      <path d="M8 2v12M2 8h12" stroke="currentColor" stroke-width="1.75" stroke-linecap="round"/>
    </svg>
    <span>Add</span>
  `;
  const feedback = document.createElement("div");
  feedback.className = "add-option-feedback";
  feedback.setAttribute("aria-live", "polite");
  wrapper.append(input, btn, feedback);
  function submit() {
    const name = input.value.trim();
    if (!name) {
      input.focus();
      input.classList.add("shake");
      input.addEventListener("animationend", () => input.classList.remove("shake"), { once: true });
      return;
    }
    const error = onSubmit(name);
    if (error) {
      feedback.textContent = error;
      feedback.style.display = "";
      setTimeout(() => {
        feedback.textContent = "";
        feedback.style.display = "none";
      }, 3000);
      return;
    }
    input.value = "";
    feedback.textContent = "";
    feedback.style.display = "none";
    input.focus();
  }
  btn.addEventListener("click", submit);
  input.addEventListener("keydown", (e) => {
    if (e.key === "Enter") submit();
  });
  input.addEventListener("input", () => {
    feedback.textContent = "";
    feedback.style.display = "none";
  });
  return wrapper;
 }
--- a/src/components/DeadlineTimer.ts
+++ b/src/components/DeadlineTimer.ts
@@ -0,0 +1,86 @@
 import * as Y from "yjs";
 import { getDeadline } from "../state";
 const DEADLINE_DURATION_MS = 2 * 60 * 1000; // 2 minutes
 export function DeadlineTimer(
  deadlineMap: Y.Map<unknown>,
  onStartDeadline: (durationMs: number) => void,
  onClearDeadline: () => void,
 ): HTMLElement {
  const wrapper = document.createElement("div");
  wrapper.className = "deadline-wrapper";
  const timerEl = document.createElement("span");
  timerEl.className = "deadline-timer";
  const startBtn = document.createElement("button");
  startBtn.className = "deadline-btn";
  startBtn.textContent = "Start 2-min vote";
  startBtn.setAttribute("aria-label", "Start a 2-minute voting deadline");
  const clearBtn = document.createElement("button");
  clearBtn.className = "deadline-btn deadline-btn--clear";
  clearBtn.textContent = "Clear";
  clearBtn.setAttribute("aria-label", "Remove voting deadline");
  wrapper.append(timerEl, startBtn, clearBtn);
  let interval: ReturnType<typeof setInterval> | undefined;
  function render() {
    const deadline = getDeadline(deadlineMap);
    const now = Date.now();
    if (deadline === null) {
      // No deadline set
      timerEl.textContent = "";
      timerEl.className = "deadline-timer";
      startBtn.hidden = false;
      clearBtn.hidden = true;
      if (interval) {
        clearInterval(interval);
        interval = undefined;
      }
      return;
    }
    startBtn.hidden = true;
    clearBtn.hidden = false;
    if (now >= deadline) {
      // Voting closed
      timerEl.textContent = "Voting closed";
      timerEl.className = "deadline-timer deadline-timer--closed";
      if (interval) {
        clearInterval(interval);
        interval = undefined;
      }
      return;
    }
    // Counting down
    const remaining = Math.ceil((deadline - now) / 1000);
    const mins = Math.floor(remaining / 60);
    const secs = remaining % 60;
    timerEl.textContent = `Voting closes in ${mins}:${secs.toString().padStart(2, "0")}`;
    timerEl.className = "deadline-timer deadline-timer--active";
    if (!interval) {
      interval = setInterval(() => render(), 1000);
    }
  }
  startBtn.addEventListener("click", () => {
    onStartDeadline(DEADLINE_DURATION_MS);
  });
  clearBtn.addEventListener("click", () => {
    onClearDeadline();
  });
  deadlineMap.observe(() => render());
  render();
  return wrapper;
 }
--- a/src/components/PollList.ts
+++ b/src/components/PollList.ts
@@ -0,0 +1,127 @@
 import * as Y from "yjs";
 import type { OptionRecord } from "../state";
 import { PollOption } from "./PollOption";
 export function PollList(
  yOptions: Y.Map<OptionRecord>,
  yVotes: Y.Map<string>,
  userId: string,
  isVotingClosed: () => boolean,
  onVote: (optionId: string) => void,
  onDelete: (optionId: string) => void,
 ): HTMLElement {
  const wrapper = document.createElement("div");
  wrapper.className = "poll-list-wrapper";
  const meta = document.createElement("div");
  meta.className = "poll-list-meta";
  const list = document.createElement("div");
  list.className = "poll-list";
  const empty = document.createElement("div");
  empty.className = "poll-list-empty";
  empty.innerHTML = `
    <div class="empty-icon">
      <svg width="32" height="32" viewBox="0 0 32 32" fill="none" xmlns="http://www.w3.org/2000/svg">
        <rect x="4" y="10" width="24" height="3" rx="1.5" fill="currentColor" opacity="0.15"/>
        <rect x="4" y="16" width="18" height="3" rx="1.5" fill="currentColor" opacity="0.1"/>
        <rect x="4" y="22" width="21" height="3" rx="1.5" fill="currentColor" opacity="0.07"/>
      </svg>
    </div>
    <p>No options yet — add the first one above.</p>
  `;
  wrapper.append(meta, list, empty);
  function getEntries() {
    const entries: Array<{
      id: string;
      name: string;
      votes: number;
      voted: boolean;
    }> = [];
    // Tally votes per option
    const tally = new Map<string, number>();
    for (const optionId of yVotes.values()) {
      tally.set(optionId, (tally.get(optionId) ?? 0) + 1);
    }
    const myVote = yVotes.get(userId) ?? null;
    yOptions.forEach((record, id) => {
      entries.push({
        id,
        name: record.label,
        votes: tally.get(id) ?? 0,
        voted: myVote === id,
      });
    });
    entries.sort((a, b) => b.votes - a.votes || a.name.localeCompare(b.name));
    return entries;
  }
  function getTotalVotes(): number {
    return yVotes.size;
  }
  function render() {
    const entries = getEntries();
    const total = getTotalVotes();
    const votingClosed = isVotingClosed();
    // Meta line
    if (entries.length > 0) {
      meta.textContent = `${entries.length} option${entries.length !== 1 ? "s" : ""} \u00b7 ${total} vote${total !== 1 ? "s" : ""} total`;
      meta.style.display = "";
    } else {
      meta.style.display = "none";
    }
    // Empty state
    empty.style.display = entries.length === 0 ? "" : "none";
    // Diff-render: reuse existing rows when possible
    const existing = new Map(
      [...list.querySelectorAll<HTMLElement>(".poll-option")].map((el) => [
        el.dataset.id,
        el,
      ]),
    );
    // Remove stale rows
    existing.forEach((el, id) => {
      if (!entries.find((e) => e.id === id)) el.remove();
    });
    // Update or insert rows in sorted order
    entries.forEach((entry, i) => {
      const newEl = PollOption({
        ...entry,
        totalVotes: total,
        votingClosed,
        onVote,
        onDelete,
      });
      const currentEl = list.children[i] as HTMLElement | undefined;
      if (!currentEl) {
        list.appendChild(newEl);
      } else if (currentEl.dataset.id !== entry.id) {
        list.insertBefore(newEl, currentEl);
        const old = existing.get(entry.id);
        if (old && old !== currentEl) old.remove();
      } else {
        list.replaceChild(newEl, currentEl);
      }
    });
  }
  yOptions.observeDeep(() => render());
  yVotes.observe(() => render());
  render();
  return wrapper;
 }
--- a/src/components/PollOption.ts
+++ b/src/components/PollOption.ts
@@ -0,0 +1,46 @@
 import { escapeHtml } from "../state";
 export interface PollOptionProps {
  id: string;
  name: string;
  votes: number;
  voted: boolean;
  totalVotes: number;
  votingClosed: boolean;
  onVote: (id: string) => void;
  onDelete: (id: string) => void;
 }
 export function PollOption(props: PollOptionProps): HTMLElement {
  const { id, name, votes, voted, totalVotes, votingClosed, onVote, onDelete } = props;
  const row = document.createElement("div");
  row.className = `poll-option${voted ? " poll-option--voted" : ""}`;
  row.dataset.id = id;
  const pct = totalVotes > 0 ? Math.round((votes / totalVotes) * 100) : 0;
  row.innerHTML = `
    <div class="poll-option__bar" style="width: ${pct}%"></div>
    <div class="poll-option__content">
      <span class="poll-option__name">${escapeHtml(name)}</span>
      <div class="poll-option__actions">
        <span class="poll-option__pct">${pct}%</span>
        <span class="poll-option__count">${votes} vote${votes !== 1 ? "s" : ""}</span>
        <button class="poll-option__vote-btn" aria-pressed="${voted}"${votingClosed ? " disabled" : ""}>
          ${voted ? "Voted" : "Vote"}
        </button>
        <button class="poll-option__delete-btn" aria-label="Remove option">
          <svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">
            <path d="M2 2l10 10M12 2L2 12" stroke="currentColor" stroke-width="1.5" stroke-linecap="round"/>
          </svg>
        </button>
      </div>
    </div>
  `;
  row.querySelector(".poll-option__vote-btn")!.addEventListener("click", () => onVote(id));
  row.querySelector(".poll-option__delete-btn")!.addEventListener("click", () => onDelete(id));
  return row;
 }
--- a/src/components/PollTitle.ts
+++ b/src/components/PollTitle.ts
@@ -0,0 +1,34 @@
 import * as Y from "yjs";
 export function PollTitle(ydoc: Y.Doc, yTitle: Y.Text): HTMLElement {
  const wrapper = document.createElement("div");
  wrapper.className = "poll-title-wrapper";
  const input = document.createElement("input");
  input.type = "text";
  input.id = "poll-title";
  input.className = "poll-title-input";
  input.placeholder = "Untitled Poll";
  input.maxLength = 120;
  input.setAttribute("aria-label", "Poll title");
  input.value = yTitle.toString();
  wrapper.appendChild(input);
  // Sync from Yjs → input (only when not focused to avoid cursor jump)
  yTitle.observe(() => {
    if (document.activeElement !== input) {
      input.value = yTitle.toString();
    }
  });
  // Sync from input → Yjs
  input.addEventListener("input", () => {
    ydoc.transact(() => {
      yTitle.delete(0, yTitle.length);
      yTitle.insert(0, input.value);
    });
  });
  return wrapper;
 }
--- a/src/components/ShareSection.ts
+++ b/src/components/ShareSection.ts
@@ -0,0 +1,39 @@
 export function ShareSection(roomName: string): HTMLElement {
  const url = `${window.location.origin}${window.location.pathname}?room=${encodeURIComponent(roomName)}`;
  const section = document.createElement("div");
  section.className = "share-section";
  section.innerHTML = `
    <p class="share-label">Share this poll</p>
    <div class="share-row">
      <code class="share-url" title="${url}">${url}</code>
      <button class="share-copy-btn">Copy link</button>
    </div>
  `;
  const copyBtn = section.querySelector<HTMLButtonElement>(".share-copy-btn")!;
  copyBtn.addEventListener("click", async () => {
    try {
      await navigator.clipboard.writeText(url);
      copyBtn.textContent = "Copied!";
      copyBtn.classList.add("share-copy-btn--success");
      setTimeout(() => {
        copyBtn.textContent = "Copy link";
        copyBtn.classList.remove("share-copy-btn--success");
      }, 2000);
    } catch {
      // Fallback: select the text
      const range = document.createRange();
      const urlEl = section.querySelector(".share-url");
      if (urlEl) {
        range.selectNode(urlEl);
        window.getSelection()?.removeAllRanges();
        window.getSelection()?.addRange(range);
      }
    }
  });
  return section;
 }
--- a/src/components/StatusBar.ts
+++ b/src/components/StatusBar.ts
@@ -0,0 +1,67 @@
 import type { WebrtcProvider } from "y-webrtc";
 export function StatusBar(provider: WebrtcProvider): HTMLElement {
  const el = document.createElement("div");
  el.className = "status-bar";
  const dot = document.createElement("span");
  dot.className = "status-dot connecting";
  const statusText = document.createElement("span");
  statusText.className = "status-text";
  statusText.textContent = "Connecting";
  const divider = document.createElement("span");
  divider.className = "status-divider";
  divider.textContent = "\u00b7";
  const peerText = document.createElement("span");
  peerText.className = "status-peers";
  el.append(dot, statusText, divider, peerText);
  // --- Connection state ---
  let syncTimeout: ReturnType<typeof setTimeout> | undefined = setTimeout(() => {
    statusText.textContent = "Ready";
    dot.className = "status-dot ready";
  }, 3000);
  provider.on("synced", ({ synced }: { synced: boolean }) => {
    if (syncTimeout) {
      clearTimeout(syncTimeout);
      syncTimeout = undefined;
    }
    dot.className = `status-dot ${synced ? "connected" : "connecting"}`;
    statusText.textContent = synced ? "Connected" : "Connecting";
  });
  // Online/offline awareness
  const handleOffline = () => {
    dot.className = "status-dot connecting";
    statusText.textContent = "Offline";
  };
  const handleOnline = () => {
    dot.className = "status-dot connecting";
    statusText.textContent = "Reconnecting";
  };
  window.addEventListener("offline", handleOffline);
  window.addEventListener("online", handleOnline);
  // --- Peer count ---
  function updatePeerCount() {
    const total = provider.awareness.getStates().size;
    const others = total - 1;
    peerText.textContent =
      others === 0
        ? "Only you"
        : `${others} other${others !== 1 ? "s" : ""}`;
  }
  provider.awareness.on("change", updatePeerCount);
  updatePeerCount();
  return el;
 }
--- a/src/identity.ts
+++ b/src/identity.ts
@@ -0,0 +1,17 @@
 const USER_ID_KEY = "polly:user-id";
 function createUserId(): string {
  if (typeof crypto.randomUUID === "function") {
    return crypto.randomUUID();
  }
  return `user-${Math.random().toString(36).slice(2, 10)}`;
 }
 export function getUserId(): string {
  const existing = localStorage.getItem(USER_ID_KEY);
  if (existing) return existing;
  const next = createUserId();
  localStorage.setItem(USER_ID_KEY, next);
  return next;
 }
--- a/src/main.ts
+++ b/src/main.ts
@@ -0,0 +1,9 @@
 import "./styles.css";
 import { initApp } from "./app";
 const container = document.querySelector<HTMLElement>("#app");
 if (!container) {
  throw new Error("App container not found.");
 }
 initApp(container);
--- a/src/state.ts
+++ b/src/state.ts
@@ -0,0 +1,207 @@
 import * as Y from "yjs";
 // --- Types ---
 export type ConnectionStatus = "connecting" | "connected" | "offline";
 export interface OptionRecord {
  id: string;
  label: string;
  createdAt: number;
  createdBy: string;
 }
 export interface PollOptionViewModel extends OptionRecord {
  voteCount: number;
  isVotedByMe: boolean;
  percentage: number;
 }
 export interface PollViewModel {
  title: string;
  roomId: string;
  shareUrl: string;
  connectionStatus: ConnectionStatus;
  peerCount: number;
  options: PollOptionViewModel[];
  totalVotes: number;
  myVoteOptionId: string | null;
  deadline: number | null;
  votingClosed: boolean;
 }
 // --- Helpers ---
 export function createOptionId(): string {
  if (typeof crypto.randomUUID === "function") {
    return crypto.randomUUID();
  }
  return `option-${Math.random().toString(36).slice(2, 10)}`;
 }
 function normalizeLabel(label: string): string {
  return label.trim().replace(/\s+/g, " ");
 }
 export function escapeHtml(value: string): string {
  return value
    .replaceAll("&", "&amp;")
    .replaceAll("<", "&lt;")
    .replaceAll(">", "&gt;")
    .replaceAll('"', "&quot;")
    .replaceAll("'", "&#39;");
 }
 // --- Title ---
 export function getPollTitle(yTitle: Y.Text): string {
  const title = yTitle.toString();
  return title || "Untitled Poll";
 }
 // --- Options ---
 export function addOption(
  options: Y.Map<OptionRecord>,
  rawLabel: string,
  userId: string,
 ): { ok: true; optionId: string } | { ok: false; error: string } {
  const label = normalizeLabel(rawLabel);
  if (!label) {
    return { ok: false, error: "Option cannot be empty." };
  }
  const normalizedTarget = label.toLocaleLowerCase();
  const duplicate = Array.from(options.values()).some(
    (option) => option.label.trim().toLocaleLowerCase() === normalizedTarget,
  );
  if (duplicate) {
    return { ok: false, error: "That option already exists." };
  }
  const option: OptionRecord = {
    id: createOptionId(),
    label,
    createdAt: Date.now(),
    createdBy: userId,
  };
  options.set(option.id, option);
  return { ok: true, optionId: option.id };
 }
 export function toggleVote(
  votes: Y.Map<string>,
  userId: string,
  optionId: string,
 ): void {
  const current = votes.get(userId);
  if (current === optionId) {
    votes.delete(userId);
  } else {
    votes.set(userId, optionId);
  }
 }
 export function deleteOption(
  options: Y.Map<OptionRecord>,
  votes: Y.Map<string>,
  optionId: string,
 ): void {
  options.delete(optionId);
  // Clean up votes pointing to this option
  for (const [userId, votedOptionId] of votes.entries()) {
    if (votedOptionId === optionId) {
      votes.delete(userId);
    }
  }
 }
 // --- Deadline ---
 export function setDeadline(
  deadlineMap: Y.Map<unknown>,
  durationMs: number,
 ): void {
  deadlineMap.set("deadline", Date.now() + durationMs);
 }
 export function clearDeadline(deadlineMap: Y.Map<unknown>): void {
  deadlineMap.delete("deadline");
 }
 export function getDeadline(deadlineMap: Y.Map<unknown>): number | null {
  const val = deadlineMap.get("deadline");
  return typeof val === "number" ? val : null;
 }
 // --- ViewModel ---
 export function createViewModel(params: {
  yTitle: Y.Text;
  options: Y.Map<OptionRecord>;
  votes: Y.Map<string>;
  deadlineMap: Y.Map<unknown>;
  roomId: string;
  shareUrl: string;
  connectionStatus: ConnectionStatus;
  peerCount: number;
  userId: string;
 }): PollViewModel {
  const {
    yTitle,
    options,
    votes,
    deadlineMap,
    roomId,
    shareUrl,
    connectionStatus,
    peerCount,
    userId,
  } = params;
  // Tally votes per option
  const tally = new Map<string, number>();
  for (const optionId of votes.values()) {
    tally.set(optionId, (tally.get(optionId) ?? 0) + 1);
  }
  let totalVotes = 0;
  for (const count of tally.values()) {
    totalVotes += count;
  }
  const myVoteOptionId = votes.get(userId) ?? null;
  const deadline = getDeadline(deadlineMap);
  const votingClosed = deadline !== null && Date.now() >= deadline;
  // Sort by votes desc, then alphabetically
  const sortedOptions = Array.from(options.values()).sort((a, b) => {
    const aVotes = tally.get(a.id) ?? 0;
    const bVotes = tally.get(b.id) ?? 0;
    if (bVotes !== aVotes) return bVotes - aVotes;
    return a.label.localeCompare(b.label);
  });
  return {
    title: getPollTitle(yTitle),
    roomId,
    shareUrl,
    connectionStatus,
    peerCount,
    myVoteOptionId,
    totalVotes,
    deadline,
    votingClosed,
    options: sortedOptions.map((option) => ({
      ...option,
      voteCount: tally.get(option.id) ?? 0,
      isVotedByMe: myVoteOptionId === option.id,
      percentage:
        totalVotes > 0
          ? Math.round(((tally.get(option.id) ?? 0) / totalVotes) * 100)
          : 0,
    })),
  };
 }
--- a/src/styles.css
+++ b/src/styles.css
@@ -0,0 +1,469 @@
 /* ── Fonts ─────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600&family=Playfair+Display:wght@500&display=swap');
 /* ── Tokens ────────────────────────────────────────────── */
 :root {
  --bg:            #F7F6F2;
  --surface:       #FFFFFF;
  --surface-hover: #FAFAF8;
  --border:        #E8E5DF;
  --border-focus:  #1A1A1A;
  --text-primary:   #1A1A1A;
  --text-secondary: #6B6860;
  --text-muted:     #AAA79F;
  --accent:         #1A1A1A;
  --accent-text:    #FFFFFF;
  --vote-bar:       rgba(26, 26, 26, 0.07);
  --vote-bar-voted: rgba(26, 26, 26, 0.12);
  --success:        #2D7D46;
  --danger:         #C0392B;
  --warning:        #8c5300;
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.05);
 }
 /* ── Reset ─────────────────────────────────────────────── */
 *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
 /* ── Base ──────────────────────────────────────────────── */
 html { font-size: 16px; }
 body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
 }
 button, input { font: inherit; }
 button { cursor: pointer; }
 /* ── Layout ────────────────────────────────────────────── */
 #app {
  max-width: 580px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
 }
 /* ── Header ────────────────────────────────────────────── */
 .app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.25rem;
 }
 .app-wordmark {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
 }
 /* ── Status bar ────────────────────────────────────────── */
 .status-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
 }
 .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background 0.3s;
 }
 .status-dot.connecting { background: var(--text-muted); }
 .status-dot.ready      { background: var(--text-muted); }
 .status-dot.connected  { background: var(--success); }
 .status-divider { color: var(--text-muted); }
 /* ── Card ──────────────────────────────────────────────── */
 .app-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
 }
 /* ── Poll Title ────────────────────────────────────────── */
 .poll-title-wrapper {
  padding: 1.75rem 1.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
 }
 .poll-title-input {
  width: 100%;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-primary);
  background: transparent;
  border: none;
  outline: none;
  line-height: 1.3;
  letter-spacing: -0.02em;
 }
 .poll-title-input::placeholder { color: var(--text-muted); }
 /* ── Add Option ────────────────────────────────────────── */
 .add-option-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border);
 }
 .add-option-input {
  flex: 1;
  min-width: 0;
  height: 2.5rem;
  padding: 0 0.875rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s;
 }
 .add-option-input::placeholder { color: var(--text-muted); }
 .add-option-input:focus { border-color: var(--border-focus); }
 .add-option-input.shake {
  animation: shake 0.3s ease;
 }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-4px); }
  75%       { transform: translateX(4px); }
 }
 .add-option-btn {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  height: 2.5rem;
  padding: 0 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-text);
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  transition: opacity 0.15s;
  white-space: nowrap;
 }
 .add-option-btn:hover { opacity: 0.85; }
 .add-option-btn:active { opacity: 0.7; }
 .add-option-feedback {
  width: 100%;
  font-size: 0.8rem;
  color: var(--danger);
  display: none;
 }
 /* ── Deadline Timer ────────────────────────────────────── */
 .deadline-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
 }
 .deadline-timer {
  flex: 1;
  font-weight: 500;
 }
 .deadline-timer--active {
  color: var(--success);
 }
 .deadline-timer--closed {
  color: var(--danger);
  font-weight: 600;
 }
 .deadline-btn {
  height: 2rem;
  padding: 0 0.875rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.15s;
  white-space: nowrap;
 }
 .deadline-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
 }
 .deadline-btn--clear:hover {
  border-color: var(--danger);
  color: var(--danger);
 }
 /* ── Poll List ─────────────────────────────────────────── */
 .poll-list-wrapper {
  padding: 0.5rem 0;
 }
 .poll-list-meta {
  padding: 0.5rem 1.75rem 0.75rem;
  font-size: 0.775rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-weight: 500;
 }
 .poll-list-empty {
  padding: 3rem 1.75rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
 }
 .empty-icon {
  margin-bottom: 0.75rem;
  opacity: 0.6;
 }
 /* ── Poll Option ───────────────────────────────────────── */
 .poll-option {
  position: relative;
  overflow: hidden;
  transition: background 0.15s;
 }
 .poll-option:hover {
  background: var(--surface-hover);
 }
 .poll-option__bar {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--vote-bar);
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
 }
 .poll-option--voted .poll-option__bar {
  background: var(--vote-bar-voted);
 }
 .poll-option__content {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.75rem;
 }
 .poll-option__name {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--text-primary);
  word-break: break-word;
 }
 .poll-option--voted .poll-option__name {
  font-weight: 500;
 }
 .poll-option__actions {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-shrink: 0;
 }
 .poll-option__pct {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  min-width: 2.5rem;
  text-align: right;
 }
 .poll-option__count {
  font-size: 0.775rem;
  color: var(--text-muted);
  min-width: 3.5rem;
 }
 .poll-option__vote-btn {
  height: 1.875rem;
  padding: 0 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.15s;
  white-space: nowrap;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
 }
 .poll-option__vote-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
 }
 .poll-option__vote-btn:disabled {
  opacity: 0.5;
  cursor: default;
 }
 .poll-option--voted .poll-option__vote-btn {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
 }
 .poll-option--voted .poll-option__vote-btn:hover:not(:disabled) {
  opacity: 0.8;
 }
 .poll-option__delete-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.625rem;
  height: 1.625rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  opacity: 0;
  transition: opacity 0.15s, color 0.15s, background 0.15s;
 }
 .poll-option:hover .poll-option__delete-btn { opacity: 1; }
 .poll-option__delete-btn:hover {
  color: var(--danger);
  background: rgba(192, 57, 43, 0.07);
 }
 /* ── Footer ────────────────────────────────────────────── */
 .app-footer {
  padding: 0 0.25rem;
 }
 /* ── Share Section ─────────────────────────────────────── */
 .share-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.5rem;
 }
 .share-label {
  font-size: 0.775rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.625rem;
 }
 .share-row {
  display: flex;
  align-items: center;
  gap: 0.625rem;
 }
 .share-url {
  flex: 1;
  font-family: 'DM Mono', 'Fira Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
  user-select: all;
 }
 .share-copy-btn {
  height: 2rem;
  padding: 0 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
 }
 .share-copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
 }
 .share-copy-btn--success {
  color: var(--success) !important;
  border-color: var(--success) !important;
 }
 /* ── Responsive ────────────────────────────────────────── */
@media (max-width: 480px) {
  #app { padding: 1rem 0.75rem 3rem; }
  .poll-title-wrapper  { padding: 1.25rem 1.25rem 1rem; }
  .add-option-wrapper  { padding: 1rem 1.25rem; }
  .poll-option__content { padding: 0.875rem 1.25rem; }
  .poll-list-meta      { padding: 0.5rem 1.25rem 0.625rem; }
  .poll-list-empty     { padding: 2.5rem 1.25rem; }
  .deadline-wrapper    { padding: 0.75rem 1.25rem; }
  .poll-option__count  { display: none; }
  .share-section { padding: 1rem 1.25rem; }
 }
--- a/src/sync.ts
+++ b/src/sync.ts
@@ -0,0 +1,79 @@
 import { IndexeddbPersistence } from "y-indexeddb";
 import { WebrtcProvider } from "y-webrtc";
 import * as Y from "yjs";
 import type { ConnectionStatus, OptionRecord } from "./state";
 export interface AppSync {
  doc: Y.Doc;
  yTitle: Y.Text;
  options: Y.Map<OptionRecord>;
  votes: Y.Map<string>;
  deadlineMap: Y.Map<unknown>;
  provider: WebrtcProvider;
  persistence: IndexeddbPersistence;
  getConnectionStatus: () => ConnectionStatus;
  getPeerCount: () => number;
  destroy: () => void;
 }
 export function initSync(roomId: string): AppSync {
  const doc = new Y.Doc();
  const yTitle = doc.getText("poll-title");
  const options = doc.getMap<OptionRecord>("poll-options");
  const votes = doc.getMap<string>("poll-votes");
  const deadlineMap = doc.getMap<unknown>("poll-deadline");
  let connectionStatus: ConnectionStatus = navigator.onLine
    ? "connecting"
    : "offline";
  const provider = new WebrtcProvider(roomId, doc,{
                signaling: ["ws://localhost:4444"]
            });
  const persistence = new IndexeddbPersistence(roomId, doc);
  const syncConnectionStatus = (status: ConnectionStatus) => {
    connectionStatus = navigator.onLine ? status : "offline";
  };
  const handleOnline = () => {
    syncConnectionStatus(provider.connected ? "connected" : "connecting");
  };
  const handleOffline = () => {
    connectionStatus = "offline";
  };
  provider.on("status", (event: { connected: boolean }) => {
    syncConnectionStatus(event.connected ? "connected" : "connecting");
  });
  provider.on("synced", ({ synced }: { synced: boolean }) => {
    if (synced) syncConnectionStatus("connected");
  });
  window.addEventListener("online", handleOnline);
  window.addEventListener("offline", handleOffline);
  return {
    doc,
    yTitle,
    options,
    votes,
    deadlineMap,
    provider,
    persistence,
    getConnectionStatus: () => connectionStatus,
    getPeerCount: () => {
      const total = provider.awareness.getStates().size;
      return Math.max(0, total - 1);
    },
    destroy: () => {
      window.removeEventListener("online", handleOnline);
      window.removeEventListener("offline", handleOffline);
      persistence.destroy();
      provider.destroy();
      doc.destroy();
    },
  };
 }
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,18 +1,15 @@
 {
-  // https://nuxt.com/docs/guide/concepts/typescript
+  "compilerOptions": {
-  "files": [],
+    "target": "ES2022",
-  "references": [
+    "module": "ESNext",
-    {
+    "moduleResolution": "Bundler",
-      "path": "./.nuxt/tsconfig.app.json"
+    "lib": ["DOM", "DOM.Iterable", "ES2022"],
-    },
+    "strict": true,
-    {
+    "noEmit": true,
-      "path": "./.nuxt/tsconfig.server.json"
+    "esModuleInterop": true,
-    },
+    "skipLibCheck": true,
-    {
+    "allowSyntheticDefaultImports": true,
-      "path": "./.nuxt/tsconfig.shared.json"
+    "useDefineForClassFields": true
-    },
+  },
-    {
+  "include": ["src"]
      "path": "./.nuxt/tsconfig.node.json"
    }
  ]
 }
		`@@ -1,2 +0,0 @@`
			`export const user = (user: Ref<UserData \| null>) => {`
			`}`