Initial commit: LiveStream Platform

Backend: FastAPI + SQLAlchemy + SQLite
Frontend: React + Vite + Ant Design (serif Anthropic theme)
Media server: MediaMTX with edge node support
Load balancing: round-robin / weighted / least-conn
Multicast detection with automatic fallback
Transcoding support via FFmpeg (configurable quality)
hls.js player with line & quality switching
Admin panel with password auth
Windows compatible scripts

frontend/src/admin/LoginPage.tsx

@@ -0,0 +1,61 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router-dom'
+import { Card, Form, Input, Button, Typography, message, Space } from 'antd'
+import { LockOutlined } from '@ant-design/icons'
+import { login } from '../api/auth'
+
+const { Title, Text } = Typography
+
+export default function LoginPage() {
+  const [loading, setLoading] = useState(false)
+  const navigate = useNavigate()
+
+  const handleSubmit = async (values: { password: string }) => {
+    setLoading(true)
+    try {
+      await login(values.password)
+      message.success('Welcome back')
+      navigate('/admin')
+    } catch {
+      message.error('Invalid password')
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  return (
+    <div style={{
+      minHeight: '100vh',
+      display: 'flex',
+      alignItems: 'center',
+      justifyContent: 'center',
+      background: '#FAF8F5',
+    }}>
+      <Card style={{ width: 400, boxShadow: '0 2px 16px rgba(0,0,0,0.04)' }}>
+        <Space direction="vertical" size="large" style={{ width: '100%' }}>
+          <div style={{ textAlign: 'center' }}>
+            <Title level={2} style={{ marginBottom: 4 }}>LiveStream</Title>
+            <Text type="secondary">Admin Panel</Text>
+          </div>
+          <Form onFinish={handleSubmit} layout="vertical">
+            <Form.Item
+              name="password"
+              rules={[{ required: true, message: 'Enter your password' }]}
+            >
+              <Input.Password
+                prefix={<LockOutlined />}
+                placeholder="Password"
+                size="large"
+              />
+            </Form.Item>
+            <Form.Item>
+              <Button type="primary" htmlType="submit" loading={loading} block size="large">
+                Sign In
+              </Button>
+            </Form.Item>
+          </Form>
+        </Space>
+      </Card>
+    </div>
+  )
+}