diff --git a/backend/models/__init__.py b/backend/models/__init__.py
index 1201730..757fcaa 100644
--- a/backend/models/__init__.py
+++ b/backend/models/__init__.py
@@ -1,3 +1,4 @@
 from .stream import Stream
+from .audit import ControlCommand, ControlSession, ViewerSession
 
-__all__ = ["Stream"]
+__all__ = ["Stream", "ViewerSession", "ControlSession", "ControlCommand"]
diff --git a/backend/models/audit.py b/backend/models/audit.py
new file mode 100644
index 0000000..485f9b3
--- /dev/null
+++ b/backend/models/audit.py
@@ -0,0 +1,50 @@
+import uuid
+from datetime import datetime
+
+from sqlalchemy import Boolean, DateTime, Float, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import Mapped, mapped_column
+
+from database import Base
+
+
+class ViewerSession(Base):
+    __tablename__ = "viewer_sessions"
+
+    session_id: Mapped[str] = mapped_column(String(64), primary_key=True)
+    stream_id: Mapped[int] = mapped_column(ForeignKey("streams.id"), index=True)
+    node_id: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    node_name: Mapped[str | None] = mapped_column(String(200), nullable=True)
+    quality: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    playback_state: Mapped[str] = mapped_column(String(32), default="idle")
+    buffered_seconds: Mapped[float | None] = mapped_column(Float, nullable=True)
+    error: Mapped[str | None] = mapped_column(Text, nullable=True)
+    remote_adjusted: Mapped[bool] = mapped_column(Boolean, default=False)
+    last_heartbeat: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, index=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+
+
+class ControlSession(Base):
+    __tablename__ = "control_sessions"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    token: Mapped[str] = mapped_column(String(128), unique=True, default=lambda: uuid.uuid4().hex)
+    stream_id: Mapped[int] = mapped_column(ForeignKey("streams.id"), index=True)
+    operator: Mapped[str] = mapped_column(String(128), default="administrator")
+    expires_at: Mapped[datetime] = mapped_column(DateTime, index=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+
+
+class ControlCommand(Base):
+    __tablename__ = "control_commands"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    control_session_id: Mapped[int] = mapped_column(ForeignKey("control_sessions.id"), index=True)
+    stream_id: Mapped[int] = mapped_column(ForeignKey("streams.id"), index=True)
+    target_session_id: Mapped[str] = mapped_column(ForeignKey("viewer_sessions.session_id"), index=True)
+    operator: Mapped[str] = mapped_column(String(128), default="administrator")
+    action: Mapped[str] = mapped_column(String(32))
+    value: Mapped[str | None] = mapped_column(String(256), nullable=True)
+    status: Mapped[str] = mapped_column(String(32), default="pending")
+    result: Mapped[str | None] = mapped_column(Text, nullable=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, index=True)
+    claimed_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
diff --git a/backend/routes/streams.py b/backend/routes/streams.py
index 16562c9..ab40775 100644
--- a/backend/routes/streams.py
+++ b/backend/routes/streams.py
@@ -3,10 +3,12 @@ import secrets
 import asyncio
 import time
 import ntpath
+from datetime import datetime, timedelta
 from pathlib import Path
 
 from fastapi import APIRouter, HTTPException, Depends, Request
 from fastapi.responses import FileResponse, StreamingResponse
+from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 from pydantic import BaseModel, Field
 from typing import Optional
@@ -16,6 +18,7 @@ from services.stream_service import StreamService
 from services.media_service import media_service
 from services.load_balancer import lb
 from config import settings
+from models.audit import ControlCommand, ControlSession, ViewerSession
 
 router = APIRouter(prefix="/api/streams", tags=["streams"])
 
@@ -46,16 +49,31 @@ class StreamUpdate(BaseModel):
 
 class RemoteSessionCreate(BaseModel):
     expires_in: int = 300
+    operator: str = "administrator"
 
 
 class RemoteCommand(BaseModel):
     token: str
     action: str
-    value: float | None = None
+    value: str | None = None
+    targets: list[str] = Field(default_factory=list)
 
 
-_remote_sessions: dict[str, dict] = {}
-_remote_commands: dict[int, list[dict]] = {}
+class ViewerHeartbeat(BaseModel):
+    session_id: str
+    node_id: str | None = None
+    node_name: str | None = None
+    quality: str | None = None
+    playback_state: str = "idle"
+    buffered_seconds: float | None = None
+    error: str | None = None
+
+
+class CommandResult(BaseModel):
+    result: str = "applied"
+
+
+VIEWER_ONLINE_SECONDS = 45
 
 
 def _media_path(filename: str | None) -> Path | None:
@@ -136,6 +154,107 @@ async def list_streams(admin: bool = False, db: AsyncSession = Depends(get_db)):
     return [_serialize(s, include_private=admin) for s in streams]
 
 
+@router.get("/catalog/events")
+async def catalog_events(request: Request, db: AsyncSession = Depends(get_db)):
+    async def events():
+        previous = None
+        while not await request.is_disconnected():
+            streams = await StreamService(db).get_public_streams()
+            payload = json.dumps(
+                [_serialize(stream, include_private=False) for stream in streams],
+                ensure_ascii=False,
+            )
+            if payload != previous:
+                yield f"event: catalog\ndata: {payload}\n\n"
+                previous = payload
+            else:
+                yield ": keep-alive\n\n"
+            await asyncio.sleep(2)
+
+    return StreamingResponse(events(), media_type="text/event-stream", headers={
+        "Cache-Control": "no-cache",
+        "X-Accel-Buffering": "no",
+    })
+
+
+@router.post("/{stream_id}/viewer-heartbeat")
+async def viewer_heartbeat(stream_id: int, body: ViewerHeartbeat,
+                           db: AsyncSession = Depends(get_db)):
+    stream = await StreamService(db).get_stream(stream_id)
+    if not stream:
+        raise HTTPException(status_code=404, detail="节目不存在")
+    session_id = body.session_id.strip()
+    if not session_id or len(session_id) > 64:
+        raise HTTPException(status_code=422, detail="观众会话 ID 无效")
+    viewer = await db.get(ViewerSession, session_id)
+    if viewer and viewer.stream_id != stream_id:
+        raise HTTPException(status_code=409, detail="观众会话已用于其他节目")
+    if not viewer:
+        viewer = ViewerSession(session_id=session_id, stream_id=stream_id)
+        db.add(viewer)
+    viewer.node_id = body.node_id
+    viewer.node_name = body.node_name
+    viewer.quality = body.quality
+    viewer.playback_state = body.playback_state[:32]
+    viewer.buffered_seconds = body.buffered_seconds
+    viewer.error = body.error[:1000] if body.error else None
+    viewer.last_heartbeat = datetime.utcnow()
+    await db.commit()
+    return {"ok": True, "remote_adjusted": viewer.remote_adjusted}
+
+
+@router.get("/{stream_id}/viewer-sessions")
+async def list_viewer_sessions(stream_id: int, db: AsyncSession = Depends(get_db),
+                               _: bool = Depends(require_auth)):
+    cutoff = datetime.utcnow() - timedelta(seconds=VIEWER_ONLINE_SECONDS)
+    viewers = (await db.execute(select(ViewerSession).where(
+        ViewerSession.stream_id == stream_id,
+        ViewerSession.last_heartbeat >= cutoff,
+    ).order_by(ViewerSession.last_heartbeat.desc()))).scalars().all()
+    return [{
+        "session_id": viewer.session_id,
+        "node_id": viewer.node_id,
+        "node_name": viewer.node_name,
+        "quality": viewer.quality,
+        "playback_state": viewer.playback_state,
+        "buffered_seconds": viewer.buffered_seconds,
+        "error": viewer.error,
+        "remote_adjusted": viewer.remote_adjusted,
+        "last_heartbeat": viewer.last_heartbeat.isoformat(),
+    } for viewer in viewers]
+
+
+@router.get("/{stream_id}/control-audit")
+async def control_audit(stream_id: int, db: AsyncSession = Depends(get_db),
+                        _: bool = Depends(require_auth)):
+    commands = (await db.execute(select(ControlCommand).where(
+        ControlCommand.stream_id == stream_id,
+    ).order_by(ControlCommand.created_at.desc()).limit(100))).scalars().all()
+    return [{
+        "id": command.id,
+        "operator": command.operator,
+        "target_session_id": command.target_session_id,
+        "action": command.action,
+        "value": command.value,
+        "status": command.status,
+        "result": command.result,
+        "created_at": command.created_at.isoformat(),
+        "claimed_at": command.claimed_at.isoformat() if command.claimed_at else None,
+    } for command in commands]
+
+
+@router.post("/{stream_id}/remote-command/{command_id}/result")
+async def report_command_result(stream_id: int, command_id: int, body: CommandResult,
+                                session_id: str, db: AsyncSession = Depends(get_db)):
+    command = await db.get(ControlCommand, command_id)
+    if not command or command.stream_id != stream_id or command.target_session_id != session_id:
+        raise HTTPException(status_code=404, detail="控制命令不存在")
+    command.status = "completed"
+    command.result = body.result[:1000]
+    await db.commit()
+    return {"ok": True}
+
+
 @router.get("/media-files")
 async def list_media_files(_: bool = Depends(require_auth)):
     root = Path(settings.replay_media_dir)
@@ -294,34 +413,77 @@ async def create_remote_session(stream_id: int, body: RemoteSessionCreate,
     stream = await StreamService(db).get_stream(stream_id)
     if not stream or not stream.remote_control_enabled:
         raise HTTPException(status_code=409, detail="节目未启用远程控制")
-    token = secrets.token_urlsafe(24)
-    _remote_sessions[token] = {
-        "stream_id": stream_id,
-        "expires_at": time.time() + min(max(body.expires_in, 30), 3600),
-    }
-    return {"token": token, "expires_in": min(max(body.expires_in, 30), 3600)}
+    expires_in = min(max(body.expires_in, 30), 3600)
+    session = ControlSession(
+        token=secrets.token_urlsafe(24),
+        stream_id=stream_id,
+        operator=body.operator.strip() or "administrator",
+        expires_at=datetime.utcnow() + timedelta(seconds=expires_in),
+    )
+    db.add(session)
+    await db.commit()
+    return {"token": session.token, "expires_in": expires_in}
 
 
 @router.post("/{stream_id}/remote-command")
 async def send_remote_command(stream_id: int, body: RemoteCommand,
+                              db: AsyncSession = Depends(get_db),
                               _: bool = Depends(require_auth)):
-    session = _remote_sessions.get(body.token)
-    if not session or session["stream_id"] != stream_id or session["expires_at"] < time.time():
+    session = (await db.execute(select(ControlSession).where(
+        ControlSession.token == body.token,
+        ControlSession.stream_id == stream_id,
+    ))).scalar_one_or_none()
+    if not session or session.expires_at < datetime.utcnow():
         raise HTTPException(status_code=403, detail="远程控制会话无效或已过期")
-    if body.action not in {"play", "pause", "seek"}:
+    stream = await StreamService(db).get_stream(stream_id)
+    if not stream or not stream.remote_control_enabled:
+        raise HTTPException(status_code=409, detail="节目未启用远程控制")
+    if body.action not in {"switch_node", "switch_quality", "restore_auto"}:
         raise HTTPException(status_code=422, detail="不支持的远程命令")
-    command = {"action": body.action, "value": body.value, "created_at": time.time()}
-    _remote_commands.setdefault(stream_id, []).append(command)
-    return {"ok": True, "command": command}
+    if not body.targets:
+        raise HTTPException(status_code=422, detail="至少选择一个观众会话")
+    viewers = (await db.execute(select(ViewerSession).where(
+        ViewerSession.stream_id == stream_id,
+        ViewerSession.session_id.in_(body.targets),
+    ))).scalars().all()
+    found = {viewer.session_id for viewer in viewers}
+    if found != set(body.targets):
+        raise HTTPException(status_code=404, detail="部分观众会话不存在")
+    commands = []
+    for target in body.targets:
+        command = ControlCommand(
+            control_session_id=session.id,
+            stream_id=stream_id,
+            target_session_id=target,
+            operator=session.operator,
+            action=body.action,
+            value=body.value,
+        )
+        db.add(command)
+        commands.append(command)
+    await db.commit()
+    return {"ok": True, "count": len(commands), "command_ids": [command.id for command in commands]}
 
 
 @router.get("/{stream_id}/remote-command")
-async def poll_remote_command(stream_id: int, token: str):
-    session = _remote_sessions.get(token)
-    if not session or session["stream_id"] != stream_id or session["expires_at"] < time.time():
-        raise HTTPException(status_code=403, detail="远程控制会话无效或已过期")
-    commands = _remote_commands.get(stream_id, [])
-    return commands[-1] if commands else None
+async def poll_remote_command(stream_id: int, session_id: str,
+                              db: AsyncSession = Depends(get_db)):
+    viewer = await db.get(ViewerSession, session_id)
+    if not viewer or viewer.stream_id != stream_id:
+        raise HTTPException(status_code=404, detail="观众会话不存在")
+    command = (await db.execute(select(ControlCommand).where(
+        ControlCommand.stream_id == stream_id,
+        ControlCommand.target_session_id == session_id,
+        ControlCommand.status == "pending",
+    ).order_by(ControlCommand.created_at).limit(1))).scalar_one_or_none()
+    if not command:
+        return None
+    command.status = "claimed"
+    command.claimed_at = datetime.utcnow()
+    viewer.remote_adjusted = command.action != "restore_auto"
+    await db.commit()
+    return {"id": command.id, "action": command.action, "value": command.value,
+            "created_at": command.created_at.isoformat()}
 
 
 @router.post("/{stream_id}/go-live")
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 7a30e8d..40279b4 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -12,6 +12,7 @@ const WatchPage = lazy(() => import('./viewer/pages/WatchPage'))
 const AdminLayout = lazy(() => import('./admin/AdminLayout'))
 const LoginPage = lazy(() => import('./admin/LoginPage'))
 const Dashboard = lazy(() => import('./admin/pages/Dashboard'))
+const LiveBoard = lazy(() => import('./admin/pages/LiveBoard'))
 const StreamList = lazy(() => import('./admin/pages/StreamList'))
 const StreamForm = lazy(() => import('./admin/pages/StreamForm'))
 const ReplayEditor = lazy(() => import('./admin/pages/ReplayEditor'))
@@ -74,6 +75,7 @@ function AppRoutes() {
           </AdminGuard>
         }>
           <Route index element={<Dashboard />} />
+          <Route path="board" element={<LiveBoard />} />
           <Route path="streams" element={<StreamList />} />
           <Route path="streams/new" element={<StreamForm />} />
           <Route path="streams/:id/edit" element={<ReplayEditor />} />
diff --git a/frontend/src/admin/AdminLayout.tsx b/frontend/src/admin/AdminLayout.tsx
index 4a64d2d..ed0db86 100644
--- a/frontend/src/admin/AdminLayout.tsx
+++ b/frontend/src/admin/AdminLayout.tsx
@@ -2,7 +2,7 @@ import { useState } from 'react'
 import { Outlet, useNavigate, useLocation } from 'react-router-dom'
 import { Layout, Menu, Button, Typography } from 'antd'
 import {
-  DashboardOutlined, VideoCameraOutlined, PlusOutlined,
+  DashboardOutlined, VideoCameraOutlined, PlusOutlined, MonitorOutlined,
   CloudServerOutlined, SettingOutlined, LogoutOutlined,
 } from '@ant-design/icons'
 import { clearToken } from '../api/client'
@@ -13,6 +13,7 @@ const { Text } = Typography
 
 const menuItems = [
   { key: '/admin', icon: <DashboardOutlined />, label: '概览' },
+  { key: '/admin/board', icon: <MonitorOutlined />, label: '直播看板' },
   { key: '/admin/streams', icon: <VideoCameraOutlined />, label: '节目列表' },
   { key: '/admin/streams/new', icon: <PlusOutlined />, label: '创建节目' },
   { key: '/admin/nodes', icon: <CloudServerOutlined />, label: '边缘节点' },
diff --git a/frontend/src/admin/pages/LiveBoard.tsx b/frontend/src/admin/pages/LiveBoard.tsx
new file mode 100644
index 0000000..c1b0da8
--- /dev/null
+++ b/frontend/src/admin/pages/LiveBoard.tsx
@@ -0,0 +1,127 @@
+import { useEffect, useState } from 'react'
+import { Button, Card, Col, Empty, Row, Select, Space, Statistic, Table, Tag, Typography, message } from 'antd'
+import { ReloadOutlined, SignalFilled, TeamOutlined, WarningOutlined } from '@ant-design/icons'
+import {
+  createRemoteSession,
+  fetchStreams,
+  fetchViewerSessions,
+  sendRemoteCommand,
+  type StreamInfo,
+  type ViewerSessionInfo,
+} from '../../api/streams'
+
+const { Title, Text } = Typography
+
+export default function LiveBoard() {
+  const [streams, setStreams] = useState<StreamInfo[]>([])
+  const [streamId, setStreamId] = useState<number>()
+  const [sessions, setSessions] = useState<ViewerSessionInfo[]>([])
+  const [selected, setSelected] = useState<React.Key[]>([])
+  const [loading, setLoading] = useState(true)
+  const [quality, setQuality] = useState('auto')
+
+  async function load() {
+    try {
+      const programs = await fetchStreams(true)
+      setStreams(programs)
+      const nextId = streamId || programs.find(program => program.status === 'live')?.id
+      if (nextId) {
+        setStreamId(nextId)
+        setSessions(await fetchViewerSessions(nextId))
+      } else {
+        setSessions([])
+      }
+    } catch {
+      message.error('看板数据加载失败')
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  useEffect(() => {
+    void load()
+    const timer = window.setInterval(load, 5000)
+    return () => window.clearInterval(timer)
+  }, [streamId])
+
+  async function controlViewers() {
+    if (!streamId || selected.length === 0) return
+    try {
+      const session = await createRemoteSession(streamId)
+      const action = quality === 'auto' ? 'restore_auto' : 'switch_quality'
+      await sendRemoteCommand(streamId, session.token, action, selected.map(String), quality === 'auto' ? undefined : quality)
+      message.success(`已向 ${selected.length} 个观众下发播放策略`)
+    } catch {
+      message.error('控制命令下发失败，请确认节目已启用审计式播放控制')
+    }
+  }
+
+  const activeSessions = sessions.filter(item => Date.now() - new Date(item.last_heartbeat).getTime() < 30000)
+  const buffering = activeSessions.filter(item => item.playback_state === 'buffering' || Number(item.buffered_seconds || 0) < 1)
+
+  return (
+    <div>
+      <Space direction="vertical" size={24} style={{ width: '100%' }}>
+        <div style={{ display: 'flex', justifyContent: 'space-between', gap: 16, flexWrap: 'wrap' }}>
+          <div>
+            <Title level={2} style={{ margin: 0 }}>直播看板</Title>
+            <Text type="secondary">实时检查节目、观众会话、线路与播放健康度</Text>
+          </div>
+          <Space wrap>
+            <Select
+              value={streamId}
+              placeholder="选择直播节目"
+              style={{ minWidth: 220 }}
+              options={streams.map(program => ({ value: program.id, label: `${program.title} · ${program.status}` }))}
+              onChange={value => { setStreamId(value); setSelected([]) }}
+            />
+            <Button icon={<ReloadOutlined />} onClick={load}>刷新</Button>
+          </Space>
+        </div>
+
+        <Row gutter={[16, 16]}>
+          <Col xs={24} sm={8}><Card><Statistic title="活跃观众" value={activeSessions.length} prefix={<TeamOutlined />} /></Card></Col>
+          <Col xs={24} sm={8}><Card><Statistic title="播放正常" value={Math.max(0, activeSessions.length - buffering.length)} prefix={<SignalFilled />} /></Card></Col>
+          <Col xs={24} sm={8}><Card><Statistic title="疑似卡顿" value={buffering.length} prefix={<WarningOutlined />} valueStyle={{ color: buffering.length ? '#cf5c36' : undefined }} /></Card></Col>
+        </Row>
+
+        {!streamId ? <Empty description="当前没有可查看的直播节目" /> : (
+          <Card
+            title="审计式观众会话"
+            extra={
+              <Space wrap>
+                <Select value={quality} onChange={setQuality} style={{ width: 150 }} options={[
+                  { value: 'auto', label: '恢复自动' },
+                  { value: '1080p', label: '1080p' },
+                  { value: '720p', label: '720p' },
+                  { value: '480p', label: '480p' },
+                  { value: '360p', label: '360p' },
+                ]} />
+                <Button type="primary" disabled={!selected.length} onClick={controlViewers}>批量切换</Button>
+              </Space>
+            }
+          >
+            <Table
+              rowKey="session_id"
+              loading={loading}
+              dataSource={sessions}
+              scroll={{ x: 850 }}
+              rowSelection={{ selectedRowKeys: selected, onChange: setSelected }}
+              pagination={{ pageSize: 20 }}
+              columns={[
+                { title: '会话', dataIndex: 'session_id', ellipsis: true, width: 180 },
+                { title: '节点', dataIndex: 'node_name', render: value => value || '未知' },
+                { title: '清晰度', dataIndex: 'quality', render: value => value || '自动' },
+                { title: '状态', dataIndex: 'playback_state', render: value => <Tag color={value === 'playing' ? 'green' : value === 'buffering' ? 'orange' : 'default'}>{value}</Tag> },
+                { title: '缓冲', dataIndex: 'buffered_seconds', render: value => `${Number(value || 0).toFixed(1)}s` },
+                { title: '远程调整', dataIndex: 'remote_adjusted', render: value => value ? <Tag color="gold">已调整</Tag> : '否' },
+                { title: '最后心跳', dataIndex: 'last_heartbeat', render: value => new Date(value).toLocaleTimeString() },
+                { title: '错误', dataIndex: 'error', ellipsis: true, render: value => value || '-' },
+              ]}
+            />
+          </Card>
+        )}
+      </Space>
+    </div>
+  )
+}
diff --git a/frontend/src/admin/pages/StreamForm.tsx b/frontend/src/admin/pages/StreamForm.tsx
index d91a795..5f46b98 100644
--- a/frontend/src/admin/pages/StreamForm.tsx
+++ b/frontend/src/admin/pages/StreamForm.tsx
@@ -78,15 +78,15 @@ export default function StreamForm() {
         style={{ marginBottom: 20, color: '#5E5A52' }}>返回列表</Button>
 
       <div style={{ background: '#fff', borderRadius: 12, border: '1px solid #EBE5DB', padding: 36 }}>
-        <Title level={2} style={{ margin: '0 0 8px', fontWeight: 600 }}>创建直播</Title>
+        <Title level={2} style={{ margin: '0 0 8px', fontWeight: 600 }}>创建节目</Title>
         <Text style={{ color: '#5E5A52', display: 'block', marginBottom: 36 }}>
-          填写直播信息，系统将生成推流码与 RTMP 地址
+          填写节目信息并预约播出，系统将生成推流码与 RTMP 地址
         </Text>
 
         <Form layout="vertical" onFinish={handleSubmit} size="large" initialValues={{ transcode_profile: 'standard', homepage_visible: true, remote_control_enabled: false }}>
-          <Form.Item name="title" label="直播标题"
-            rules={[{ required: true, message: '请输入直播标题' }]}>
-            <Input placeholder="输入直播标题" style={{ borderRadius: 8 }} />
+          <Form.Item name="title" label="节目标题"
+            rules={[{ required: true, message: '请输入节目标题' }]}>
+            <Input placeholder="输入节目标题" style={{ borderRadius: 8 }} />
           </Form.Item>
           <Form.Item name="description" label="简介">
             <TextArea rows={3} placeholder="直播内容简介（可选）" style={{ borderRadius: 8 }} />
@@ -109,7 +109,7 @@ export default function StreamForm() {
           <div style={{ borderTop: '1px solid #EBE5DB', margin: '8px 0 24px' }} />
           <Form.Item style={{ marginBottom: 0 }}>
             <Button type="primary" htmlType="submit" loading={loading} block style={{ height: 48, borderRadius: 8 }}>
-              创建直播
+              创建节目
             </Button>
           </Form.Item>
         </Form>
diff --git a/frontend/src/api/streams.ts b/frontend/src/api/streams.ts
index 6ab0e71..e80c36d 100644
--- a/frontend/src/api/streams.ts
+++ b/frontend/src/api/streams.ts
@@ -74,6 +74,37 @@ export interface QualityInfo {
   height: number
 }
 
+export interface ViewerSessionInfo {
+  session_id: string
+  node_id?: string
+  node_name?: string
+  quality?: string
+  playback_state: string
+  buffered_seconds?: number
+  error?: string
+  remote_adjusted: boolean
+  last_heartbeat: string
+}
+
+export interface ControlAuditInfo {
+  id: number
+  operator: string
+  target_session_id: string
+  action: string
+  value?: string
+  status: string
+  result?: string
+  created_at: string
+  claimed_at?: string
+}
+
+export interface RemoteCommandInfo {
+  id: number
+  action: 'switch_node' | 'switch_quality' | 'restore_auto'
+  value?: string
+  created_at: string
+}
+
 export async function fetchStreams(admin = false): Promise<StreamInfo[]> {
   const { data } = await api.get('/streams', { params: admin ? { admin: true } : undefined })
   return data
@@ -120,3 +151,36 @@ export async function getWatchUrls(streamId: number): Promise<WatchInfo> {
 export function getStreamStatusUrl(streamId: number): string {
   return `/api/streams/${streamId}/events`
 }
+
+export async function sendViewerHeartbeat(streamId: number, payload: Record<string, unknown>): Promise<{ remote_adjusted: boolean }> {
+  const { data } = await api.post(`/streams/${streamId}/viewer-heartbeat`, payload)
+  return data
+}
+
+export async function pollRemoteCommand(streamId: number, sessionId: string): Promise<RemoteCommandInfo | null> {
+  const { data } = await api.get(`/streams/${streamId}/remote-command`, { params: { session_id: sessionId } })
+  return data
+}
+
+export async function reportRemoteCommandResult(streamId: number, commandId: number, sessionId: string, result: string): Promise<void> {
+  await api.post(`/streams/${streamId}/remote-command/${commandId}/result`, { result }, { params: { session_id: sessionId } })
+}
+
+export async function fetchViewerSessions(streamId: number): Promise<ViewerSessionInfo[]> {
+  const { data } = await api.get(`/streams/${streamId}/viewer-sessions`)
+  return data
+}
+
+export async function fetchControlAudit(streamId: number): Promise<ControlAuditInfo[]> {
+  const { data } = await api.get(`/streams/${streamId}/control-audit`)
+  return data
+}
+
+export async function createRemoteSession(streamId: number, expiresIn = 300): Promise<{ token: string; expires_in: number }> {
+  const { data } = await api.post(`/streams/${streamId}/remote-session`, { expires_in: expiresIn })
+  return data
+}
+
+export async function sendRemoteCommand(streamId: number, token: string, action: string, targets: string[], value?: string): Promise<void> {
+  await api.post(`/streams/${streamId}/remote-command`, { token, action, targets, value })
+}
diff --git a/frontend/src/viewer/pages/HomePage.tsx b/frontend/src/viewer/pages/HomePage.tsx
index 52669b8..a59a658 100644
--- a/frontend/src/viewer/pages/HomePage.tsx
+++ b/frontend/src/viewer/pages/HomePage.tsx
@@ -16,11 +16,42 @@ export default function HomePage() {
 
   useEffect(() => {
     let active = true
-    fetchStreams()
+    let pollTimer: ReturnType<typeof setInterval> | undefined
+    const load = () => fetchStreams()
       .then(data => { if (active) setStreams(data) })
       .catch(() => {})
       .finally(() => { if (active) setLoading(false) })
-    return () => { active = false }
+    const startPolling = () => {
+      if (!pollTimer) pollTimer = setInterval(load, 10000)
+    }
+    const stopPolling = () => {
+      if (pollTimer) clearInterval(pollTimer)
+      pollTimer = undefined
+    }
+
+    void load()
+    const events = new EventSource('/api/streams/catalog/events')
+    events.addEventListener('catalog', event => {
+      if (!active) return
+      try {
+        const data = JSON.parse((event as MessageEvent<string>).data)
+        if (Array.isArray(data)) {
+          setStreams(data)
+          setLoading(false)
+          stopPolling()
+        }
+      } catch {
+        startPolling()
+      }
+    })
+    events.onopen = stopPolling
+    events.onerror = startPolling
+
+    return () => {
+      active = false
+      events.close()
+      stopPolling()
+    }
   }, [])
 
   const sorted = [...streams].sort((a, b) => {
diff --git a/frontend/src/viewer/pages/WatchPage.tsx b/frontend/src/viewer/pages/WatchPage.tsx
index 0bf947f..223f1b7 100644
--- a/frontend/src/viewer/pages/WatchPage.tsx
+++ b/frontend/src/viewer/pages/WatchPage.tsx
@@ -3,7 +3,15 @@ import { useParams, useNavigate } from 'react-router-dom'
 import { Select, Button, Typography, Tag, Spin, Empty, Alert } from 'antd'
 import { ArrowLeftOutlined, WifiOutlined, SignalFilled } from '@ant-design/icons'
 import Hls from 'hls.js'
-import { getStreamStatusUrl, getWatchUrls, type WatchInfo, type LineInfo } from '../../api/streams'
+import {
+  getStreamStatusUrl,
+  getWatchUrls,
+  pollRemoteCommand,
+  reportRemoteCommandResult,
+  sendViewerHeartbeat,
+  type WatchInfo,
+  type LineInfo,
+} from '../../api/streams'
 import { useBrand } from '../../brand/BrandContext'
 import './viewer.css'
 
@@ -19,10 +27,83 @@ export default function WatchPage() {
   const [loadError, setLoadError] = useState('')
   const [playbackError, setPlaybackError] = useState('')
   const [activeLine, setActiveLine] = useState<string>('')
-  const [activeQuality, setActiveQuality] = useState<string>('')
+  const [activeQuality, setActiveQuality] = useState<string>('auto')
+  const [autoQuality, setAutoQuality] = useState<string>('')
+  const bufferEventsRef = useRef<number[]>([])
+  const bufferStartedRef = useRef<number | null>(null)
+  const playbackStartedRef = useRef<number>(0)
+  const [remoteAdjusted, setRemoteAdjusted] = useState(false)
   const hlsRef = useRef<Hls | null>(null)
+  const viewerSessionRef = useRef<string>('')
   const currentLine = info?.lines.find(line => line.node_id === activeLine)
 
+  useEffect(() => {
+    const storageKey = 'viewer-session-id'
+    const storedSessionId = window.localStorage.getItem(storageKey)
+    const sessionId = storedSessionId || (window.crypto?.randomUUID?.().replace(/-/g, '') ?? `${Date.now()}${Math.random().toString(16).slice(2)}`)
+    if (!storedSessionId) window.localStorage.setItem(storageKey, sessionId)
+    viewerSessionRef.current = sessionId.slice(0, 64)
+  }, [])
+
+  useEffect(() => {
+    const streamId = Number(id)
+    if (!Number.isInteger(streamId) || streamId <= 0 || !info) return
+
+    const heartbeat = async () => {
+      const video = videoRef.current
+      const bufferedSeconds = video && video.buffered.length
+        ? Math.max(0, video.buffered.end(video.buffered.length - 1) - video.currentTime)
+        : 0
+      try {
+        const result = await sendViewerHeartbeat(streamId, {
+          session_id: viewerSessionRef.current,
+          node_id: activeLine || null,
+          node_name: currentLine?.node_name || null,
+          quality: activeQuality || null,
+          playback_state: video?.paused ? 'paused' : video?.readyState ? 'playing' : 'idle',
+          buffered_seconds: bufferedSeconds,
+          error: playbackError || null,
+        })
+        setRemoteAdjusted(result.remote_adjusted)
+      } catch {
+        // Telemetry must never interrupt playback.
+      }
+    }
+
+    const pollCommand = async () => {
+      try {
+        const command = await pollRemoteCommand(streamId, viewerSessionRef.current)
+        if (!command) return
+        let result = 'applied'
+        if (command.action === 'switch_quality' && command.value) {
+          setActiveQuality(command.value)
+          setRemoteAdjusted(true)
+        } else if (command.action === 'switch_node' && command.value) {
+          setActiveLine(command.value)
+          setRemoteAdjusted(true)
+        } else if (command.action === 'restore_auto') {
+          setRemoteAdjusted(false)
+          setActiveLine(info.lines.length ? autoSelectLine(info.lines).node_id : '')
+          setActiveQuality('auto')
+        } else {
+          result = 'unsupported'
+        }
+        await reportRemoteCommandResult(streamId, command.id, viewerSessionRef.current, result)
+      } catch {
+        // Command polling is optional and must fail closed.
+      }
+    }
+
+    void heartbeat()
+    void pollCommand()
+    const heartbeatTimer = window.setInterval(heartbeat, 10000)
+    const commandTimer = window.setInterval(pollCommand, 3000)
+    return () => {
+      window.clearInterval(heartbeatTimer)
+      window.clearInterval(commandTimer)
+    }
+  }, [id, info, activeLine, activeQuality, playbackError, currentLine?.node_name])
+
   useEffect(() => {
     const streamId = Number(id)
     if (!Number.isInteger(streamId) || streamId <= 0) {
@@ -116,7 +197,8 @@ export default function WatchPage() {
       setPlaybackError('所选播放线路不可用')
       return
     }
-    const quality = activeQuality ? line.qualities?.find(q => q.label === activeQuality) : line.qualities?.[0]
+    const selectedLabel = activeQuality === 'auto' ? (autoQuality || line.qualities?.[0]?.label) : activeQuality
+    const quality = selectedLabel ? line.qualities?.find(q => q.label === selectedLabel) : line.qualities?.[0]
     const source = quality?.url || line.url || line.unicast_fallback
     if (!source) {
       setPlaybackError('当前节目没有可用的播放地址')
@@ -141,7 +223,60 @@ export default function WatchPage() {
       hlsRef.current?.destroy()
       hlsRef.current = null
     }
-  }, [activeLine, activeQuality, info])
+  }, [activeLine, activeQuality, autoQuality, info])
+
+  useEffect(() => {
+    if (!info?.qualities.length) return
+    setAutoQuality(current => current || info.qualities[0].label)
+  }, [info])
+
+  useEffect(() => {
+    const video = videoRef.current
+    if (!video || !info || activeQuality !== 'auto') return
+
+    const qualityLabels = info.qualities.map(quality => quality.label)
+    const lowerQuality = () => {
+      setAutoQuality(current => {
+        const index = Math.max(0, qualityLabels.indexOf(current))
+        return qualityLabels[Math.min(index + 1, qualityLabels.length - 1)] || current
+      })
+    }
+    const higherQuality = () => {
+      setAutoQuality(current => {
+        const index = Math.max(0, qualityLabels.indexOf(current))
+        return qualityLabels[Math.max(index - 1, 0)] || current
+      })
+    }
+    const onPlaying = () => {
+      const now = Date.now()
+      if (!playbackStartedRef.current) playbackStartedRef.current = now
+      if (bufferStartedRef.current && now - playbackStartedRef.current > 3000) {
+        const duration = now - bufferStartedRef.current
+        bufferEventsRef.current = bufferEventsRef.current.filter(at => now - at <= 10000)
+        if (duration >= 2000 || bufferEventsRef.current.length >= 3) {
+          lowerQuality()
+          bufferEventsRef.current = []
+        }
+      }
+      bufferStartedRef.current = null
+    }
+    const onWaiting = () => {
+      if (Date.now() - playbackStartedRef.current <= 3000) return
+      bufferStartedRef.current = Date.now()
+      bufferEventsRef.current.push(Date.now())
+    }
+    const recoveryTimer = window.setInterval(() => {
+      if (!video.paused && !video.seeking && video.readyState >= 3) higherQuality()
+    }, 60000)
+
+    video.addEventListener('waiting', onWaiting)
+    video.addEventListener('playing', onPlaying)
+    return () => {
+      window.clearInterval(recoveryTimer)
+      video.removeEventListener('waiting', onWaiting)
+      video.removeEventListener('playing', onPlaying)
+    }
+  }, [activeQuality, info])
 
   function jumpToChapter(time: number) {
     if (!videoRef.current) return
@@ -180,13 +315,17 @@ export default function WatchPage() {
         </div>
         <div className="watch-options">
           <Tag style={{ margin: 0 }}>节点：{currentLine?.node_name || info.selected_node?.name || '不可用'}</Tag>
-          <Tag style={{ margin: 0 }}>清晰度：{activeQuality || '不可用'}</Tag>
+          <Tag style={{ margin: 0 }}>清晰度：{activeQuality === 'auto' ? `自动（${autoQuality || '检测中'}）` : activeQuality || '不可用'}</Tag>
+          {remoteAdjusted && <Tag color="gold" style={{ margin: 0 }}>播放由管理员临时调整</Tag>}
           <Text style={{ color: '#949088', fontSize: 13, display: 'flex', alignItems: 'center', gap: 6 }}>
             <SignalFilled style={{ color: info.multicast_available ? '#5B8C5A' : '#5E5A52', fontSize: 12 }} />
             {info.multicast_available ? '组播' : '单播'}
           </Text>
           <Select value={activeQuality || undefined} onChange={setActiveQuality} className="watch-quality" size="small"
-            options={info.qualities.map(q => ({ value: q.label, label: q.label }))} placeholder="清晰度" />
+            options={[
+              { value: 'auto', label: `自动（${autoQuality || '检测中'}）` },
+              ...info.qualities.map(q => ({ value: q.label, label: q.label })),
+            ]} placeholder="清晰度" />
           <Select value={activeLine || undefined} onChange={setActiveLine} className="watch-line" size="small"
             options={info.lines.map(l => ({ value: l.node_id, label: l.node_name }))}
             prefix={<WifiOutlined />} placeholder="线路" />
diff --git a/frontend/src/viewer/pages/viewer.css b/frontend/src/viewer/pages/viewer.css
index e7641ce..382126d 100644
--- a/frontend/src/viewer/pages/viewer.css
+++ b/frontend/src/viewer/pages/viewer.css
@@ -1,5 +1,7 @@
 .viewer-shell {
   min-height: 100vh;
+  width: 100%;
+  max-width: 100vw;
   overflow-x: hidden;
   background: #f4f0e8;
   color: #211d18;
@@ -463,6 +465,32 @@ button.stream-card:focus-visible {
 }
 
 @media (max-width: 600px) {
+  .watch-shell,
+  .watch-stage,
+  .watch-content,
+  .watch-frame,
+  .watch-video {
+    width: 100%;
+    max-width: 100vw;
+    min-width: 0;
+  }
+
+  .watch-header {
+    box-sizing: border-box;
+    overflow: hidden;
+  }
+
+  .watch-options {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
+  }
+
+  .watch-quality,
+  .watch-line {
+    width: 100% !important;
+    min-width: 0 !important;
+  }
+
   .viewer-nav { margin-bottom: 48px; }
 
   .viewer-directory-tools { align-items: stretch; flex-direction: column; }