You are helping me modify a vibe-coded widget from itjustvibes.com.

[VIBE CODE: "finger selector" by @GigaChad]
Source: https://itjustvibes.com/GigaChad/finger-selector
Type: React/JSX

--- SOURCE CODE ---
```jsx
import { useState, useEffect, useRef, useCallback } from "react";



const COLORS = [

  "#FF3B5C", "#00E5A0", "#4D8BFF", "#FFD23F",

  "#FF6B35", "#A855F7", "#06D6A0", "#FF006E",

  "#3A86FF", "#FFBE0B", "#FB5607", "#8338EC",

];



const COUNTDOWN_SECONDS = 5;



function vibrate(pattern) {

  if (navigator.vibrate) navigator.vibrate(pattern);

}



export default function FingerSelector() {

  const [fingers, setFingers] = useState(new Map());

  const [phase, setPhase] = useState("waiting"); // waiting | countdown | selecting | done

  const [countdown, setCountdown] = useState(COUNTDOWN_SECONDS);

  const [winnerId, setWinnerId] = useState(null);

  const [pulseScale, setPulseScale] = useState(1);

  const timerRef = useRef(null);

  const countdownRef = useRef(null);

  const colorMapRef = useRef(new Map());

  const colorIndexRef = useRef(0);

  const fingersRef = useRef(new Map());



  const getColor = useCallback((id) => {

    if (!colorMapRef.current.has(id)) {

      colorMapRef.current.set(id, COLORS[colorIndexRef.current % COLORS.length]);

      colorIndexRef.current++;

    }

    return colorMapRef.current.get(id);

  }, []);



  const resetCountdown = useCallback(() => {

    if (timerRef.current) clearTimeout(timerRef.current);

    if (countdownRef.current) clearInterval(countdownRef.current);

    setCountdown(COUNTDOWN_SECONDS);

    setPhase("waiting");

    setWinnerId(null);

  }, []);



  const startCountdown = useCallback(() => {

    if (timerRef.current) clearTimeout(timerRef.current);

    if (countdownRef.current) clearInterval(countdownRef.current);



    setPhase("countdown");

    setCountdown(COUNTDOWN_SECONDS);



    let t = COUNTDOWN_SECONDS;

    countdownRef.current = setInterval(() => {

      t -= 1;

      setCountdown(t);

      vibrate(30);

      if (t <= 0) {

        clearInterval(countdownRef.current);

        countdownRef.current = null;

        selectWinner();

      }

    }, 1000);

  }, []);



  const selectWinner = useCallback(() => {

    setPhase("selecting");

    const currentFingers = fingersRef.current;

    const ids = Array.from(currentFingers.keys());

    if (ids.length === 0) {

      setPhase("waiting");

      return;

    }



    // Rapid flash selection effect

    let flashes = 0;

    const maxFlashes = 12;

    const flashInterval = setInterval(() => {

      const randomId = ids[Math.floor(Math.random() * ids.length)];

      setWinnerId(randomId);

      vibrate(15);

      flashes++;

      if (flashes >= maxFlashes) {

        clearInterval(flashInterval);

        const finalWinner = ids[Math.floor(Math.random() * ids.length)];

        setWinnerId(finalWinner);

        setPhase("done");

        vibrate([100, 50, 100, 50, 200]);

      }

    }, 120);

  }, []);



  const handleTouchStart = useCallback((e) => {

    e.preventDefault();

    const next = new Map(fingersRef.current);

    for (const touch of e.changedTouches) {

      getColor(touch.identifier);

      next.set(touch.identifier, { x: touch.clientX, y: touch.clientY });

    }

    fingersRef.current = next;

    setFingers(new Map(next));

    vibrate(10);



    if (next.size >= 2) {

      // Reset and start countdown on each new finger

      if (countdownRef.current) clearInterval(countdownRef.current);

      if (timerRef.current) clearTimeout(timerRef.current);

      setWinnerId(null);

      setPhase("waiting");

      timerRef.current = setTimeout(() => {

        startCountdown();

      }, 300);

    }

  }, [getColor, startCountdown]);



  const handleTouchMove = useCallback((e) => {

    e.preventDefault();

    const next = new Map(fingersRef.current);

    for (const touch of e.changedTouches) {

      if (next.has(touch.identifier)) {

        next.set(touch.identifier, { x: touch.clientX, y: touch.clientY });

      }

    }

    fingersRef.current = next;

    setFingers(new Map(next));

  }, []);



  const handleTouchEnd = useCallback((e) => {

    e.preventDefault();

    const next = new Map(fingersRef.current);

    for (const touch of e.changedTouches) {

      next.delete(touch.identifier);

      colorMapRef.current.delete(touch.identifier);

    }

    fingersRef.current = next;

    setFingers(new Map(next));



    if (next.size < 2 && phase !== "done") {

      resetCountdown();

    }

  }, [phase, resetCountdown]);



  const handleReset = useCallback(() => {

    resetCountdown();

    fingersRef.current = new Map();

    setFingers(new Map());

    colorMapRef.current = new Map();

    colorIndexRef.current = 0;

  }, [resetCountdown]);



  // Pulse animation for winner

  useEffect(() => {

    if (phase !== "done") return;

    let frame;

    let start = Date.now();

    const animate = () => {

      const elapsed = (Date.now() - start) / 1000;

      setPulseScale(1 + 0.15 * Math.sin(elapsed * 4));

      frame = requestAnimationFrame(animate);

    };

    frame = requestAnimationFrame(animate);

    return () => cancelAnimationFrame(frame);

  }, [phase]);



  // Cleanup on unmount

  useEffect(() => {

    return () => {

      if (timerRef.current) clearTimeout(timerRef.current);

      if (countdownRef.current) clearInterval(countdownRef.current);

    };

  }, []);



  const fingerEntries = Array.from(fingers.entries());



  return (

    <div

      style={{

        position: "fixed", inset: 0,

        background: "#0A0A0F",

        touchAction: "none",

        userSelect: "none",

        WebkitUserSelect: "none",

        overflow: "hidden",

        fontFamily: "'SF Pro Display', 'Helvetica Neue', sans-serif",

      }}

      onTouchStart={handleTouchStart}

      onTouchMove={handleTouchMove}

      onTouchEnd={handleTouchEnd}

      onTouchCancel={handleTouchEnd}

    >

      {/* Subtle grid background */}

      <div style={{

        position: "absolute", inset: 0,

        backgroundImage: `

          linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),

          linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px)

        `,

        backgroundSize: "40px 40px",

      }} />



      {/* Ambient glow from active fingers */}

      {fingerEntries.map(([id, pos]) => {

        const color = colorMapRef.current.get(id) || "#fff";

        const isWinner = phase === "done" && id === winnerId;

        return (

          <div key={`glow-${id}`} style={{

            position: "absolute",

            left: pos.x, top: pos.y,

            width: isWinner ? 400 : 250,

            height: isWinner ? 400 : 250,

            transform: "translate(-50%, -50%)",

            borderRadius: "50%",

            background: `radial-gradient(circle, ${color}${isWinner ? "30" : "15"} 0%, transparent 70%)`,

            transition: "width 0.4s, height 0.4s",

            pointerEvents: "none",

          }} />

        );

      })}



      {/* Finger dots */}

      {fingerEntries.map(([id, pos]) => {

        const color = colorMapRef.current.get(id) || "#fff";

        const isWinner = phase === "done" && id === winnerId;

        const isLoser = phase === "done" && id !== winnerId;

        const dotSize = isWinner ? 90 * pulseScale : isLoser ? 40 : 64;



        return (

          <div key={id} style={{

            position: "absolute",

            left: pos.x, top: pos.y,

            transform: "translate(-50%, -50%)",

            display: "flex", alignItems: "center", justifyContent: "center",

            pointerEvents: "none",

            transition: isWinner ? "none" : "all 0.3s ease",

          }}>

            {/* Outer ring */}

            <div style={{

              position: "absolute",

              width: dotSize + 20,

              height: dotSize + 20,

              borderRadius: "50%",

              border: `2px solid ${color}${isLoser ? "30" : "60"}`,

              animation: isWinner ? undefined : "spin 8s linear infinite",

              transition: "all 0.3s ease",

            }} />

            {/* Inner dot */}

            <div style={{

              width: dotSize,

              height: dotSize,

              borderRadius: "50%",

              background: `radial-gradient(circle at 35% 35%, ${color}ee, ${color}88)`,

              boxShadow: isWinner

                ? `0 0 40px ${color}80, 0 0 80px ${color}40, inset 0 -4px 12px rgba(0,0,0,0.3)`

                : `0 0 20px ${color}40, inset 0 -3px 8px rgba(0,0,0,0.3)`,

              opacity: isLoser ? 0.3 : 1,

              transition: isWinner ? "none" : "all 0.4s ease",

            }} />

            {/* Winner crown / label */}

            {isWinner && (

              <div style={{

                position: "absolute",

                top: -50,

                fontSize: 28,

                animation: "fadeIn 0.4s ease",

              }}>

                👆

              </div>

            )}

          </div>

        );

      })}



      {/* Center UI */}

      <div style={{

        position: "absolute",

        top: "50%", left: "50%",

        transform: "translate(-50%, -50%)",

        textAlign: "center",

        pointerEvents: "none",

        zIndex: 10,

      }}>

        {fingers.size === 0 && phase === "waiting" && (

          <div style={{ animation: "fadeIn 0.5s ease" }}>

            <div style={{

              fontSize: 48,

              marginBottom: 16,

              opacity: 0.9,

            }}>👇</div>

            <div style={{

              color: "rgba(255,255,255,0.5)",

              fontSize: 18,

              fontWeight: 300,

              letterSpacing: 2,

              textTransform: "uppercase",

            }}>

              Everyone place a finger

            </div>

          </div>

        )}



        {fingers.size === 1 && phase === "waiting" && (

          <div style={{

            color: "rgba(255,255,255,0.4)",

            fontSize: 15,

            fontWeight: 300,

            letterSpacing: 1.5,

            textTransform: "uppercase",

          }}>

            Waiting for more players...

          </div>

        )}



        {phase === "countdown" && (

          <div style={{ animation: "fadeIn 0.2s ease" }}>

            <div style={{

              fontSize: 96,

              fontWeight: 700,

              color: countdown <= 2 ? "#FF3B5C" : "rgba(255,255,255,0.9)",

              textShadow: countdown <= 2

                ? "0 0 40px rgba(255,59,92,0.5)"

                : "0 0 30px rgba(255,255,255,0.1)",

              lineHeight: 1,

              transition: "color 0.3s, text-shadow 0.3s",

            }}>

              {countdown}

            </div>

            <div style={{

              color: "rgba(255,255,255,0.35)",

              fontSize: 12,

              fontWeight: 400,

              letterSpacing: 3,

              textTransform: "uppercase",

              marginTop: 12,

            }}>

              Hold still

            </div>

          </div>

        )}



        {phase === "selecting" && (

          <div style={{

            fontSize: 14,

            color: "rgba(255,255,255,0.5)",

            letterSpacing: 3,

            textTransform: "uppercase",

            animation: "pulse 0.5s ease infinite",

          }}>

            Selecting...

          </div>

        )}



        {phase === "done" && (

          <div style={{ animation: "fadeIn 0.5s ease" }}>

            <div style={{

              fontSize: 22,

              fontWeight: 600,

              color: colorMapRef.current.get(winnerId) || "#fff",

              letterSpacing: 1,

              textShadow: `0 0 30px ${colorMapRef.current.get(winnerId) || "#fff"}60`,

            }}>

              YOU GO FIRST

            </div>

          </div>

        )}

      </div>



      {/* Player count */}

      {fingers.size >= 2 && phase !== "done" && (

        <div style={{

          position: "absolute",

          top: 50,

          left: "50%",

          transform: "translateX(-50%)",

          color: "rgba(255,255,255,0.3)",

          fontSize: 13,

          letterSpacing: 2,

          textTransform: "uppercase",

          pointerEvents: "none",

        }}>

          {fingers.size} players

        </div>

      )}



      {/* Reset button */}

      {phase === "done" && (

        <div

          onClick={handleReset}

          style={{

            position: "absolute",

            bottom: 60,

            left: "50%",

            transform: "translateX(-50%)",

            padding: "14px 36px",

            borderRadius: 40,

            background: "rgba(255,255,255,0.08)",

            backdropFilter: "blur(10px)",

            color: "rgba(255,255,255,0.7)",

            fontSize: 14,

            fontWeight: 500,

            letterSpacing: 2,

            textTransform: "uppercase",

            cursor: "pointer",

            border: "1px solid rgba(255,255,255,0.1)",

            pointerEvents: "auto",

            zIndex: 20,

            animation: "fadeIn 0.6s ease",

          }}

        >

          Play Again

        </div>

      )}



      {/* Progress bar */}

      {phase === "countdown" && (

        <div style={{

          position: "absolute",

          bottom: 0, left: 0,

          width: "100%",

          height: 4,

          background: "rgba(255,255,255,0.05)",

        }}>

          <div style={{

            height: "100%",

            width: `${(countdown / COUNTDOWN_SECONDS) * 100}%`,

            background: countdown <= 2

              ? "linear-gradient(90deg, #FF3B5C, #FF6B35)"

              : "linear-gradient(90deg, #4D8BFF, #00E5A0)",

            transition: "width 1s linear, background 0.3s",

          }} />

        </div>

      )}



      <style>{`

        @keyframes spin {

          from { transform: rotate(0deg); }

          to { transform: rotate(360deg); }

        }

        @keyframes fadeIn {

          from { opacity: 0; transform: scale(0.9); }

          to { opacity: 1; transform: scale(1); }

        }

        @keyframes pulse {

          0%, 100% { opacity: 0.5; }

          50% { opacity: 1; }

        }

      `}</style>

    </div>

  );

}
```

[REQUESTED CHANGES]
(no specific request — apply your best judgment)

--- HOW TO RESPOND (READ FIRST) ---

Before writing any code, follow this exact process:

1. **ANALYZE** the widget source code provided above and identify:
   a. Which Vibes SDK features it already uses (vibes.save, vibes.load, vibes.shared.join, etc.)
   b. Which SDK features would genuinely benefit THIS specific widget — tailored to what it does, not a dump of everything available.

2. **PRESENT A NUMBERED LIST** covering:
   - SDK features currently active in this widget
   - New SDK features that would concretely improve this widget (be specific: why this widget, what it enables)

3. **WAIT** — do not write any code yet. Reply with your analysis and numbered list, then stop and ask the user which numbered items they want.

4. **IMPLEMENT ONLY** the items the user confirms, plus any explicit change they requested. Do not add unrequested features.

**IMPORTANT — Shared state room names:**
If you add vibes.shared.join(), do NOT use a hardcoded string literal as the room name (e.g. vibes.shared.join("lobby")) unless the user explicitly wants ALL viewers to share one single global state. A hardcoded room name means every person who visits this widget reads and writes the same shared state — it is a global room. For per-user or per-session isolation, derive the room name from a variable (e.g. a user ID, session token, or random value). When in doubt, use vibes.save/vibes.load for per-user persistence instead.

--- VIBES SDK CONTEXT ---
## Vibes SDK Reference

You are building an HTML widget for It Just Vibes (itjustvibes.com). The Vibes SDK is auto-injected — do NOT add a script tag. Just use `window.vibes` (or just `vibes`).

### Setup

Wrap your startup code in `vibes.onReady`:

```js
vibes.onReady(async () => {
  const saved = await vibes.load("myKey");
  // your widget logic here
});
```

### State (Per-User Persistence)

Every user gets their own isolated state per widget. All methods return Promises.

| Method | Description |
|--------|-------------|
| `await vibes.save(key, value)` | Save JSON-serializable data |
| `await vibes.load(key)` | Load saved data (returns `null` if not found) |
| `await vibes.delete(key)` | Delete a saved key |
| `await vibes.listKeys()` | Get array of all saved key names |

**Key rules:**
- Keys are strings, max 64 characters, alphanumeric + dashes/underscores
- Values must be JSON-serializable (objects, arrays, strings, numbers, booleans)
- Max 100KB per value, 500KB per widget per user, 5MB per user total
- Max 100 keys per widget per user

### Fetch Proxy

Use direct `fetch()` for APIs with permissive CORS headers (`Access-Control-Allow-Origin: *`). Use `vibes.fetch` for APIs without CORS headers (the proxy handles cross-origin requests):

```js
const resp = await vibes.fetch("https://api.example.com/data", {
  method: "GET",         // GET, POST, PUT, DELETE
  headers: {},           // optional headers
  body: null,            // optional body (string)
  timeout: null          // optional timeout in ms
});
const data = await resp.json(); // or resp.text()
console.log(resp.status, resp.ok);
```

### Multiplayer (Shared State)

Real-time shared state across all users viewing the same widget.

```js
// Join a room (call once at startup)
await vibes.shared.join("lobby", { persistent: true });

// Set shared state (broadcasts to all users)
await vibes.shared.set("score", { player1: 10, player2: 7 });

// Read shared state (synchronous, returns last known value)
const score = vibes.shared.get("score");

// Listen for changes to a specific key
vibes.shared.onChange("score", (newValue) => {
  console.log("Score updated:", newValue);
});

// Listen for any shared state change
vibes.shared.onAny((key, value) => {
  console.log(key, "changed to", value);
});

// Get number of connected users
const count = await vibes.shared.getUserCount();

// Leave room
vibes.shared.leave();

// Clear all shared state for this room
await vibes.shared.clear();
```

**Shared state options:**
- `{ persistent: true }` — state survives page reloads (stored server-side)
- Default room name is "__default__" if omitted

### Agent-Accessible State (vibes.ai.*)

State written with the standard `vibes.save` / `vibes.load` methods is private to each user and is **NOT readable by AI agents**. To share state with an AI agent (via the MCP connector), use the `vibes.ai` sub-namespace:

| Method | Description |
|--------|-------------|
| `await vibes.ai.setState(key, value)` | Write agent-readable state. Key is stored internally as `ai/<key>`. |
| `await vibes.ai.getState(key)` | Read agent-readable state. Returns `null` if key absent. |
| `await vibes.ai.listKeys()` | List all agent-readable keys (without the `ai/` prefix). |

**Important rules:**
- Regular `vibes.save()` / `vibes.load()` is **NOT agent-accessible** — use `vibes.ai.*` for state you want agents to read.
- The widget **owner** must enable agent access in **Manage → Agent tab** before any agent can read or write `vibes.ai.*` state.
- Keys are auto-prefixed to `ai/` internally; you supply just the short key (e.g. `'context'`).

```js
vibes.onReady(async () => {
  // Write state an AI agent can later read
  await vibes.ai.setState('context', { currentLevel: 3, score: 1500 });

  // Read it back (same auto-prefix applies)
  const ctx = await vibes.ai.getState('context');

  // List all agent-accessible keys for this widget
  const keys = await vibes.ai.listKeys(); // e.g. ['context']
});
```

### Rules

1. **Do NOT use localStorage, sessionStorage, or window.storage** — they are blocked or undefined in the sandbox. Use `vibes.save`/`vibes.load` instead.
2. **Do NOT add a script tag to import the SDK** — it is auto-injected.
3. **Wrap startup code in `vibes.onReady()`** — the SDK may not be ready immediately.
4. **Await all SDK calls** — every method (except `vibes.shared.get`) returns a Promise.
5. **External JS libraries are allowed and encouraged** — load them via a `<script src>` tag from a reputable CDN (jsDelivr, unpkg, or cdnjs) with a pinned version, or inline the library source. The only exception: do NOT add a script tag for the Vibes SDK itself — it is auto-injected (see Rule 2).
6. **Keep total code under 100KB** — that is the default widget size limit (your account limit may be higher).

### Rate Limits

| Operation | Limit |
|-----------|-------|
| Writes (save + delete combined) | 30/min |
| Reads (load) | 60/min |
| List keys | 30/min |
| Fetch proxy | Rate limited per widget |

### Error Handling

All SDK methods can reject. Wrap in try/catch:

```js
try {
  await vibes.save("key", value);
} catch (err) {
  console.error("Save failed:", err.message);
}
```

Fetch proxy errors include `err.code`: `"RATE_LIMITED"`, `"BLOCKED"`, `"FETCH_ERROR"`.

### Data Export

Export rows of data as CSV or Excel directly from your widget.

```js
// Register dataset for the platform's "Export data" button
// AND optionally trigger an immediate download
vibes.exportData(rows, { filename: 'results.csv' })

// rows: Array of arrays (each inner array is one row; first row = headers)
// options.filename: sets the download filename and format (csv or xlsx)
// options.directDownload: false to only register without downloading (default: true)
```

| Option | Type | Default | Description |
|--------|------|---------|-------------|
| `filename` | string | `'data.csv'` | Download filename; extension determines format (`.csv` or `.xlsx`) |
| `directDownload` | boolean | `true` | Trigger immediate browser download in addition to registering the dataset |

**Notes:**
- First call registers the dataset so the widget chrome shows an "Export data" button
- Use `.csv` extension for CSV, `.xlsx` for Excel
- CSV injection safety is automatic (formula-starting cells prefixed with `'`)
- Data stays in the browser — no server round-trip


--- FORK & RESUBMIT INSTRUCTION ---
Return the complete, self-contained JSX file with all changes applied.
It should be ready to paste into itjustvibes.com/submit to create a new fork.
Include this comment at the top of the output:
/* Forked from: https://itjustvibes.com/GigaChad/finger-selector */