# Fix JSX Syntax Errors Blocking Electron Dev

## Problem
`npm run dev:electron` fails with two issues:
1. **Sidebar.jsx:632** — Fatal: "Adjacent JSX elements must be wrapped in an enclosing tag"
2. **ScreenShareModal.jsx:70** — Warning: Duplicate `width` key in object literal

## Root Cause Analysis

### Sidebar.jsx — Duplicate opening `<div>`
Lines 402 and 403 are identical:
```jsx
<div style={{ display: 'flex', flex: 1, minHeight: 0 }}>  // line 402 ← DUPLICATE
<div style={{ display: 'flex', flex: 1, minHeight: 0 }}>  // line 403
```
Line 403's div closes at line 632, but line 402's div **never closes**. This leaves the Voice Connection Panel (line 633), UserControlPanel (line 681), and modals (line 684+) as adjacent siblings without a common parent.

### ScreenShareModal.jsx — Duplicate style key
Line 70 has `width` specified twice:
```jsx
style={{ position: 'relative', width: '100%', height: '250px', width: '450px', ... }}
```
The second `width: '450px'` silently overrides `width: '100%'`.

## Fix

### 1. Sidebar.jsx — Remove duplicate div (line 402)
**File:** `FrontEnd/Electron/src/components/Sidebar.jsx`

Delete line 402 entirely. The remaining structure becomes:
```
Line 401: <div className="sidebar">           ← outermost
Line 403:   <div style={{ display: 'flex', flex: 1, minHeight: 0 }}>  ← flex container
              ...server-list + channel-list...
Line 632:   </div>                             ← closes flex container
            Voice Connection Panel, UserControlPanel, Modals
Line 701: </div>                               ← closes sidebar
```

### 2. ScreenShareModal.jsx — Remove duplicate width
**File:** `FrontEnd/Electron/src/components/ScreenShareModal.jsx`

On line 70, remove the first `width: '100%',` — keep only `width: '450px'`.

## Verification
- Run `npm run dev:electron` — Vite should compile without errors
- The Electron window should open and render the sidebar correctly
