feat: add PC monitoring tab with Windows agent

- New /api/pc endpoints (heartbeat, list, delete)
- Dashboard tabs: Серверы / ПК with auto-refresh
- PowerShell agent: CPU, RAM, Disk, Network, GPU, Top processes
- One-command Windows installer with Scheduled Task
- PC setup instructions modal

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/api/pc.py

@@ -0,0 +1,95 @@
+import json
+from datetime import datetime
+from typing import Dict
+
+from fastapi import APIRouter, Request, Depends
+
+from server.auth import require_auth
+from server.config import DATA_DIR
+
+router = APIRouter(prefix="/api/pc", tags=["pc"])
+
+# In-memory PC metrics cache
+pc_metrics: Dict[str, dict] = {}
+
+PC_FILE = DATA_DIR / "pc_agents.json"
+
+
+def _load_pc_data():
+    if PC_FILE.exists():
+        with open(PC_FILE) as f:
+            return json.load(f)
+    return {}
+
+
+def _save_pc_data(data):
+    with open(PC_FILE, "w") as f:
+        json.dump(data, f, indent=2, ensure_ascii=False)
+
+
+@router.post("/heartbeat")
+async def pc_heartbeat(request: Request):
+    """Receive metrics from Windows PC agent. No auth required (agent sends by name)."""
+    body = await request.json()
+    agent_name = body.get("agent_name", "")
+    if not agent_name:
+        return {"status": "error", "detail": "agent_name required"}
+
+    metrics = body.get("metrics", {})
+    timestamp = body.get("timestamp", datetime.now().isoformat())
+
+    entry = {
+        "agent_name": agent_name,
+        "metrics": metrics,
+        "timestamp": timestamp,
+        "ip": request.client.host if request.client else "",
+        "online": True,
+        "last_seen": datetime.now().isoformat(),
+    }
+
+    pc_metrics[agent_name] = entry
+
+    # Persist
+    stored = _load_pc_data()
+    stored[agent_name] = entry
+    _save_pc_data(stored)
+
+    return {"status": "ok"}
+
+
+@router.get("/list")
+async def pc_list(request: Request, user: str = Depends(require_auth)):
+    """List all PC agents with metrics."""
+    stored = _load_pc_data()
+
+    # Merge with in-memory (fresher)
+    for name, data in pc_metrics.items():
+        stored[name] = data
+
+    # Mark stale agents (no heartbeat > 3 min)
+    now = datetime.now()
+    result = []
+    for name, data in stored.items():
+        last_seen = data.get("last_seen", "")
+        try:
+            last_dt = datetime.fromisoformat(last_seen)
+            stale = (now - last_dt).total_seconds() > 180
+        except Exception:
+            stale = True
+
+        data["online"] = not stale
+        result.append(data)
+
+    return result
+
+
+@router.delete("/{agent_name}")
+async def pc_delete(agent_name: str, request: Request, user: str = Depends(require_auth)):
+    """Remove a PC agent."""
+    pc_metrics.pop(agent_name, None)
+
+    stored = _load_pc_data()
+    stored.pop(agent_name, None)
+    _save_pc_data(stored)
+
+    return {"status": "ok"}

server/main.py

@@ -16,6 +16,7 @@ from server.auth import get_current_user
 from server.api.servers import router as servers_router
 from server.api.auth_routes import router as auth_router
 from server.api.ssh_ws import router as ssh_router
+from server.api.pc import router as pc_router
 from server.services.monitor import monitor_loop
 from server.services.telegram_bot import start_bot, stop_bot
 from server.services.alerter import check_alerts
@@ -62,10 +63,16 @@ BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 app.mount("/static", StaticFiles(directory=os.path.join(BASE_DIR, "static")), name="static")
 templates = Jinja2Templates(directory=os.path.join(BASE_DIR, "templates"))
 
+# Static downloads (Windows agent)
+DOWNLOADS_DIR = os.path.join(os.path.dirname(BASE_DIR), "windows")
+if os.path.isdir(DOWNLOADS_DIR):
+    app.mount("/static/downloads", StaticFiles(directory=DOWNLOADS_DIR), name="downloads")
+
 # Include routers
 app.include_router(servers_router)
 app.include_router(auth_router)
 app.include_router(ssh_router)
+app.include_router(pc_router)
 
 
 @app.get("/", response_class=HTMLResponse)

server/static/css/style.css

@@ -600,6 +600,39 @@ main {
     overflow: hidden;
 }
 
+/* Tabs */
+.tabs {
+    display: flex;
+    gap: 4px;
+    margin-bottom: 20px;
+    background: var(--bg-card);
+    border: 1px solid var(--border);
+    border-radius: 10px;
+    padding: 4px;
+}
+
+.tab {
+    flex: 1;
+    padding: 10px 16px;
+    border: none;
+    border-radius: 8px;
+    background: transparent;
+    color: var(--text-secondary);
+    font-size: 14px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: all 0.2s;
+}
+
+.tab:hover {
+    color: var(--text-primary);
+}
+
+.tab.active {
+    background: var(--accent);
+    color: white;
+}
+
 /* Footer */
 .app-footer {
     text-align: center;

server/static/js/app.js

@@ -413,6 +413,115 @@ document.addEventListener('click', (e) => {
     }
 });
 
+// Tabs
+let activeTab = 'servers';
+
+function switchTab(tab) {
+    activeTab = tab;
+    document.getElementById('tab-servers').classList.toggle('active', tab === 'servers');
+    document.getElementById('tab-pc').classList.toggle('active', tab === 'pc');
+    document.getElementById('panel-servers').style.display = tab === 'servers' ? '' : 'none';
+    document.getElementById('panel-pc').style.display = tab === 'pc' ? '' : 'none';
+
+    if (tab === 'pc') loadPCs();
+}
+
+// PC monitoring
+let pcAgents = [];
+
+async function loadPCs() {
+    try {
+        const resp = await fetch('/api/pc/list', {credentials: 'include'});
+        if (resp.status === 401) return;
+        pcAgents = await resp.json();
+        renderPCs();
+    } catch (e) {
+        console.error('PC load error:', e);
+    }
+}
+
+function renderPCs() {
+    const grid = document.getElementById('pc-grid');
+
+    if (!pcAgents.length) {
+        grid.innerHTML = '<div style="text-align:center;padding:60px;opacity:0.5;grid-column:1/-1">Нет подключённых ПК. Установите агент.</div>';
+        return;
+    }
+
+    grid.innerHTML = pcAgents.map(pc => {
+        const m = pc.metrics || {};
+        const isOnline = pc.online;
+        const cpu = m.cpu_percent || 0;
+        const ram = m.ram_percent || 0;
+        const disk = m.disk_percent || 0;
+
+        const cpuClass = cpu > 90 ? 'crit' : cpu > 70 ? 'warn' : '';
+        const ramClass = ram > 90 ? 'crit' : ram > 70 ? 'warn' : '';
+        const diskClass = disk > 90 ? 'crit' : disk > 70 ? 'warn' : '';
+
+        const disksHtml = (m.disks || []).map(d =>
+            `<div style="font-size:11px;color:var(--text-secondary);margin-top:2px">${d.drive} ${d.used_gb}/${d.total_gb} GB (${d.percent}%)</div>`
+        ).join('');
+
+        const procsHtml = (m.top_processes || []).slice(0, 3).map(p =>
+            `<span style="font-size:10px;padding:2px 6px;background:var(--bg-primary);border-radius:4px;margin:1px">${p.name} ${p.ram_mb}MB</span>`
+        ).join(' ');
+
+        return `
+            <div class="server-card ${isOnline ? 'online' : 'offline'}">
+                <div class="server-card-header">
+                    <div>
+                        <div class="name">💻 ${pc.agent_name}</div>
+                        <div class="host">${m.hostname || ''} • ${pc.ip || ''}</div>
+                    </div>
+                    <span class="status-badge ${isOnline ? 'online' : 'offline'}">
+                        <span class="status-dot ${isOnline ? 'online' : 'offline'}"></span>
+                        ${isOnline ? 'Online' : 'Offline'}
+                    </span>
+                </div>
+                ${isOnline ? `
+                <div class="metrics-grid">
+                    <div class="metric-item">
+                        <span class="label">CPU</span>
+                        <span class="value ${cpuClass}">${cpu}%</span>
+                        <div class="progress-bar"><div class="fill ${cpuClass || 'ok'}" style="width:${cpu}%"></div></div>
+                    </div>
+                    <div class="metric-item">
+                        <span class="label">RAM</span>
+                        <span class="value ${ramClass}">${ram}%</span>
+                        <div class="progress-bar"><div class="fill ${ramClass || 'ok'}" style="width:${ram}%"></div></div>
+                    </div>
+                    <div class="metric-item">
+                        <span class="label">Disk</span>
+                        <span class="value ${diskClass}">${disk}%</span>
+                        <div class="progress-bar"><div class="fill ${diskClass || 'ok'}" style="width:${disk}%"></div></div>
+                    </div>
+                </div>
+                <div style="font-size:12px;color:var(--text-secondary);margin-bottom:8px">
+                    ${m.uptime || ''} ${m.os ? '• ' + m.os.substring(0, 30) : ''}
+                </div>
+                ${m.gpu_name ? `<div style="font-size:11px;color:var(--text-secondary)">GPU: ${m.gpu_name}</div>` : ''}
+                ${disksHtml}
+                ${procsHtml ? `<div style="margin-top:6px;display:flex;flex-wrap:wrap;gap:2px">${procsHtml}</div>` : ''}
+                ` : '<div style="padding:20px 0;text-align:center;opacity:0.5">Нет данных</div>'}
+                <div class="server-card-actions">
+                    <button class="danger" onclick="deletePC('${pc.agent_name}')">🗑 Удалить</button>
+                </div>
+            </div>
+        `;
+    }).join('');
+}
+
+async function deletePC(name) {
+    if (!confirm(`Удалить ПК "${name}" из мониторинга?`)) return;
+    await fetch(`/api/pc/${encodeURIComponent(name)}`, {method: 'DELETE', credentials: 'include'});
+    loadPCs();
+}
+
+function showPCSetup() {
+    document.getElementById('pcSetupModal').style.display = 'flex';
+}
+
 // Initial load
 document.addEventListener('DOMContentLoaded', () => {
     applyTheme(currentTheme);
@@ -420,4 +529,7 @@ document.addEventListener('DOMContentLoaded', () => {
     loadServers();
 });
 
-setInterval(loadServers, 30000);
+setInterval(() => {
+    if (activeTab === 'servers') loadServers();
+    else loadPCs();
+}, 30000);

server/templates/dashboard.html

@@ -40,11 +40,28 @@
             </div>
         </div>
 
-        <div class="toolbar">
+        <!-- Tabs -->
-            <button class="btn-primary" id="addServerBtn" onclick="showAddServer()">+ Добавить сервер</button>
+        <div class="tabs">
+            <button class="tab active" id="tab-servers" onclick="switchTab('servers')">🖥 Серверы</button>
+            <button class="tab" id="tab-pc" onclick="switchTab('pc')">💻 ПК</button>
         </div>
 
-        <div class="servers-grid" id="servers-grid"></div>
+        <!-- Servers Tab -->
+        <div id="panel-servers">
+            <div class="toolbar">
+                <button class="btn-primary" id="addServerBtn" onclick="showAddServer()">+ Добавить сервер</button>
+            </div>
+            <div class="servers-grid" id="servers-grid"></div>
+        </div>
+
+        <!-- PC Tab -->
+        <div id="panel-pc" style="display:none">
+            <div class="toolbar">
+                <button class="btn-secondary" onclick="showPCSetup()">📋 Инструкция установки</button>
+                <button class="btn-secondary" onclick="loadPCs()">🔄 Обновить</button>
+            </div>
+            <div class="servers-grid" id="pc-grid"></div>
+        </div>
     </main>
 
     <!-- Add Server Modal -->
@@ -165,6 +182,46 @@
         </div>
     </div>
 
+    <!-- PC Setup Modal -->
+    <div class="modal" id="pcSetupModal" style="display:none">
+        <div class="modal-content modal-wide">
+            <div class="modal-header">
+                <h2>💻 Установка агента на ПК</h2>
+                <button class="btn-close" onclick="closeModal('pcSetupModal')">&times;</button>
+            </div>
+            <div class="instructions-section">
+                <div class="instr-card">
+                    <h4>📥 Быстрая установка (PowerShell от Администратора)</h4>
+                    <code id="pc-install-cmd">powershell -ExecutionPolicy Bypass -Command "Invoke-WebRequest -Uri 'http://77.239.126.123:7272/static/downloads/install_agent.ps1' -OutFile install_agent.ps1; .\install_agent.ps1 -ServerUrl 'http://77.239.126.123:7272' -AgentName 'MyPC'"</code>
+                </div>
+                <div class="instr-card">
+                    <h4>⚙️ Параметры</h4>
+                    <p><b>-ServerUrl</b> — адрес сервера мониторинга<br>
+                    <b>-AgentName</b> — имя ПК (по умолчанию hostname)<br>
+                    <b>-Interval</b> — интервал отправки в секундах (по умолчанию 60)</p>
+                </div>
+                <div class="instr-card">
+                    <h4>📊 Что мониторится</h4>
+                    <p>CPU, RAM, Disk (все диски), Network, GPU, Uptime, Top 5 процессов</p>
+                </div>
+                <div class="instr-card">
+                    <h4>🔧 Управление</h4>
+                    <ul class="cmd-list">
+                        <li>Get-ScheduledTask 'VPS-Monitor-Agent'</li>
+                        <li>Stop-ScheduledTask 'VPS-Monitor-Agent'</li>
+                        <li>Start-ScheduledTask 'VPS-Monitor-Agent'</li>
+                        <li>Unregister-ScheduledTask 'VPS-Monitor-Agent'</li>
+                    </ul>
+                </div>
+                <div class="instr-card">
+                    <h4>📁 Файлы</h4>
+                    <p>Агент: <code style="display:inline">C:\VPS-Monitor\vps_monitor_agent.ps1</code><br>
+                    Конфиг: <code style="display:inline">C:\VPS-Monitor\agent_config.json</code></p>
+                </div>
+            </div>
+        </div>
+    </div>
+
     <footer class="app-footer">
         автор:&ensp;<a href="https://github.com/andrey271192" target="_blank">GitHub</a>&ensp;·&ensp;<a href="https://boosty.to/iot_andrey" target="_blank">Boosty</a>&ensp;·&ensp;<a href="https://t.me/Iot_andrey" target="_blank">Поддержка</a>&ensp;·&ensp;<a href="https://t.me/Iot_andrey" target="_blank">@Iot_andrey</a>
     </footer>

windows/README_PC.md

@@ -0,0 +1,50 @@
+# VPS Monitor — Windows PC Agent
+
+## Quick Install (one command)
+
+Run in PowerShell as Administrator:
+
+```powershell
+irm https://77.239.126.123.nip.io/static/downloads/install_agent.ps1 | iex -ServerUrl "http://77.239.126.123:7272" -AgentName "MyPC"
+```
+
+Or download and run:
+```powershell
+Invoke-WebRequest -Uri "http://77.239.126.123:7272/static/downloads/install_agent.ps1" -OutFile install_agent.ps1
+powershell -ExecutionPolicy Bypass -File install_agent.ps1 -ServerUrl "http://77.239.126.123:7272" -AgentName "Office-PC"
+```
+
+## What it monitors
+
+- CPU usage (%)
+- RAM usage (total, used, %)
+- Disk usage (all drives)
+- Network adapters (speed, traffic)
+- GPU info
+- Uptime
+- Top 5 processes by CPU
+
+## Files
+
+| File | Purpose |
+|------|---------|
+| `install_agent.ps1` | Installer (creates task, config) |
+| `vps_monitor_agent.ps1` | Agent (collects & sends metrics) |
+| `C:\VPS-Monitor\agent_config.json` | Config (server URL, name) |
+
+## Management
+
+```powershell
+# Check status
+Get-ScheduledTask 'VPS-Monitor-Agent'
+
+# Stop
+Stop-ScheduledTask 'VPS-Monitor-Agent'
+
+# Start
+Start-ScheduledTask 'VPS-Monitor-Agent'
+
+# Uninstall
+Unregister-ScheduledTask 'VPS-Monitor-Agent' -Confirm:$false
+Remove-Item -Recurse C:\VPS-Monitor
+```

windows/install_agent.ps1

@@ -0,0 +1,114 @@
+# VPS Monitor — Windows Agent Installer
+# Usage: powershell -ExecutionPolicy Bypass -File install_agent.ps1 -ServerUrl "http://IP:7272" -AgentName "MyPC"
+
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$ServerUrl,
+
+    [string]$AgentName = $env:COMPUTERNAME,
+
+    [int]$Interval = 60
+)
+
+$InstallDir = "C:\VPS-Monitor"
+$TaskName = "VPS-Monitor-Agent"
+
+Write-Host "================================================" -ForegroundColor Cyan
+Write-Host "  VPS Monitor — Agent Installer" -ForegroundColor Cyan
+Write-Host "================================================" -ForegroundColor Cyan
+Write-Host ""
+Write-Host "  Server:   $ServerUrl" -ForegroundColor White
+Write-Host "  Name:     $AgentName" -ForegroundColor White
+Write-Host "  Interval: ${Interval}s" -ForegroundColor White
+Write-Host "  Install:  $InstallDir" -ForegroundColor White
+Write-Host ""
+
+# Create install directory
+if (-not (Test-Path $InstallDir)) {
+    New-Item -ItemType Directory -Path $InstallDir -Force | Out-Null
+    Write-Host "[+] Created $InstallDir" -ForegroundColor Green
+}
+
+# Download agent script
+Write-Host "[*] Downloading agent..." -ForegroundColor Yellow
+$AgentUrl = "$ServerUrl/static/downloads/vps_monitor_agent.ps1"
+try {
+    Invoke-WebRequest -Uri $AgentUrl -OutFile "$InstallDir\vps_monitor_agent.ps1" -UseBasicParsing
+    Write-Host "[+] Agent downloaded" -ForegroundColor Green
+} catch {
+    Write-Host "[!] Download failed, using local copy..." -ForegroundColor Yellow
+    # Fallback: copy from same directory
+    $localAgent = Join-Path $PSScriptRoot "vps_monitor_agent.ps1"
+    if (Test-Path $localAgent) {
+        Copy-Item $localAgent "$InstallDir\vps_monitor_agent.ps1"
+        Write-Host "[+] Local copy used" -ForegroundColor Green
+    } else {
+        Write-Host "[-] No agent script found!" -ForegroundColor Red
+        exit 1
+    }
+}
+
+# Create config
+$config = @{
+    server_url = $ServerUrl
+    agent_name = $AgentName
+    interval = $Interval
+} | ConvertTo-Json
+
+Set-Content -Path "$InstallDir\agent_config.json" -Value $config
+Write-Host "[+] Config saved" -ForegroundColor Green
+
+# Create scheduled task (run at startup + every 5 min check)
+$existingTask = Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+if ($existingTask) {
+    Unregister-ScheduledTask -TaskName $TaskName -Confirm:$false
+    Write-Host "[*] Removed old task" -ForegroundColor Yellow
+}
+
+$action = New-ScheduledTaskAction `
+    -Execute "powershell.exe" `
+    -Argument "-ExecutionPolicy Bypass -WindowStyle Hidden -File `"$InstallDir\vps_monitor_agent.ps1`"" `
+    -WorkingDirectory $InstallDir
+
+$triggerStartup = New-ScheduledTaskTrigger -AtStartup
+$triggerNow = New-ScheduledTaskTrigger -Once -At (Get-Date) -RepetitionInterval (New-TimeSpan -Minutes 1)
+
+$principal = New-ScheduledTaskPrincipal -UserId "SYSTEM" -LogonType ServiceAccount -RunLevel Highest
+
+$settings = New-ScheduledTaskSettingsSet `
+    -AllowStartIfOnBatteries `
+    -DontStopIfGoingOnBatteries `
+    -RestartCount 3 `
+    -RestartInterval (New-TimeSpan -Minutes 1) `
+    -ExecutionTimeLimit (New-TimeSpan -Days 365)
+
+Register-ScheduledTask `
+    -TaskName $TaskName `
+    -Action $action `
+    -Trigger $triggerStartup `
+    -Principal $principal `
+    -Settings $settings `
+    -Description "VPS Monitor PC Agent — sends metrics to $ServerUrl" | Out-Null
+
+Write-Host "[+] Scheduled task created" -ForegroundColor Green
+
+# Start now
+Start-ScheduledTask -TaskName $TaskName
+Write-Host "[+] Agent started!" -ForegroundColor Green
+
+Write-Host ""
+Write-Host "================================================" -ForegroundColor Cyan
+Write-Host "  Installation complete!" -ForegroundColor Green
+Write-Host "================================================" -ForegroundColor Cyan
+Write-Host ""
+Write-Host "  Files:     $InstallDir" -ForegroundColor White
+Write-Host "  Task:      $TaskName" -ForegroundColor White
+Write-Host "  Status:    Running" -ForegroundColor White
+Write-Host ""
+Write-Host "  Commands:" -ForegroundColor Gray
+Write-Host "    Check:   Get-ScheduledTask '$TaskName'" -ForegroundColor Gray
+Write-Host "    Stop:    Stop-ScheduledTask '$TaskName'" -ForegroundColor Gray
+Write-Host "    Start:   Start-ScheduledTask '$TaskName'" -ForegroundColor Gray
+Write-Host "    Remove:  Unregister-ScheduledTask '$TaskName'" -ForegroundColor Gray
+Write-Host "    Logs:    type $InstallDir\agent_config.json" -ForegroundColor Gray
+Write-Host ""

windows/vps_monitor_agent.ps1

@@ -0,0 +1,160 @@
+# VPS Monitor — Windows PC Agent
+# Sends system metrics to VPS Monitoring server
+#
+# Install: Run install_agent.ps1
+# Manual:  powershell -ExecutionPolicy Bypass -File vps_monitor_agent.ps1
+
+param(
+    [string]$ServerUrl = "",
+    [string]$AgentName = "",
+    [int]$Interval = 60
+)
+
+# Load config
+$ConfigPath = Join-Path $PSScriptRoot "agent_config.json"
+if (Test-Path $ConfigPath) {
+    $config = Get-Content $ConfigPath | ConvertFrom-Json
+    if (-not $ServerUrl) { $ServerUrl = $config.server_url }
+    if (-not $AgentName) { $AgentName = $config.agent_name }
+    if ($config.interval) { $Interval = $config.interval }
+}
+
+if (-not $ServerUrl -or -not $AgentName) {
+    Write-Host "ERROR: server_url and agent_name required" -ForegroundColor Red
+    Write-Host "Edit agent_config.json or pass -ServerUrl and -AgentName"
+    exit 1
+}
+
+Write-Host "================================================" -ForegroundColor Cyan
+Write-Host "  VPS Monitor — PC Agent" -ForegroundColor Cyan
+Write-Host "  Server: $ServerUrl" -ForegroundColor Gray
+Write-Host "  Name:   $AgentName" -ForegroundColor Gray
+Write-Host "  Interval: ${Interval}s" -ForegroundColor Gray
+Write-Host "================================================" -ForegroundColor Cyan
+Write-Host ""
+
+function Get-SystemMetrics {
+    $metrics = @{}
+
+    # Hostname
+    $metrics["hostname"] = $env:COMPUTERNAME
+
+    # OS
+    $os = Get-CimInstance Win32_OperatingSystem
+    $metrics["os"] = "$($os.Caption) $($os.Version)"
+
+    # CPU
+    $cpu = Get-CimInstance Win32_Processor
+    $metrics["cpu_name"] = $cpu.Name
+    $metrics["cpu_percent"] = [math]::Round((Get-Counter '\Processor(_Total)\% Processor Time' -ErrorAction SilentlyContinue).CounterSamples[0].CookedValue, 1)
+
+    # RAM
+    $totalRam = [math]::Round($os.TotalVisibleMemorySize / 1024, 0)
+    $freeRam = [math]::Round($os.FreePhysicalMemory / 1024, 0)
+    $usedRam = $totalRam - $freeRam
+    $metrics["ram_total_mb"] = $totalRam
+    $metrics["ram_used_mb"] = $usedRam
+    $metrics["ram_percent"] = [math]::Round(($usedRam / $totalRam) * 100, 1)
+
+    # Disk (all drives)
+    $disks = @()
+    Get-CimInstance Win32_LogicalDisk -Filter "DriveType=3" | ForEach-Object {
+        $totalGb = [math]::Round($_.Size / 1GB, 1)
+        $freeGb = [math]::Round($_.FreeSpace / 1GB, 1)
+        $usedGb = $totalGb - $freeGb
+        $pct = if ($totalGb -gt 0) { [math]::Round(($usedGb / $totalGb) * 100, 1) } else { 0 }
+        $disks += @{
+            drive = $_.DeviceID
+            total_gb = $totalGb
+            used_gb = $usedGb
+            free_gb = $freeGb
+            percent = $pct
+        }
+    }
+    $metrics["disks"] = $disks
+
+    # Primary disk summary
+    $primary = $disks | Where-Object { $_.drive -eq "C:" } | Select-Object -First 1
+    if ($primary) {
+        $metrics["disk_total_gb"] = $primary.total_gb
+        $metrics["disk_used_gb"] = $primary.used_gb
+        $metrics["disk_percent"] = $primary.percent
+    }
+
+    # Network
+    $adapters = Get-NetAdapter -Physical -ErrorAction SilentlyContinue | Where-Object { $_.Status -eq "Up" }
+    $netInfo = @()
+    foreach ($a in $adapters) {
+        $stats = Get-NetAdapterStatistics -Name $a.Name -ErrorAction SilentlyContinue
+        $netInfo += @{
+            name = $a.Name
+            speed_mbps = [math]::Round($a.LinkSpeed.Replace(" Gbps","000").Replace(" Mbps","") -as [double], 0)
+            sent_mb = if ($stats) { [math]::Round($stats.SentBytes / 1MB, 0) } else { 0 }
+            received_mb = if ($stats) { [math]::Round($stats.ReceivedBytes / 1MB, 0) } else { 0 }
+        }
+    }
+    $metrics["network"] = $netInfo
+
+    # Uptime
+    $uptime = (Get-Date) - $os.LastBootUpTime
+    $metrics["uptime"] = "up $($uptime.Days)d $($uptime.Hours)h $($uptime.Minutes)m"
+    $metrics["uptime_seconds"] = [math]::Round($uptime.TotalSeconds, 0)
+
+    # GPU (if available)
+    try {
+        $gpu = Get-CimInstance Win32_VideoController | Select-Object -First 1
+        if ($gpu) {
+            $metrics["gpu_name"] = $gpu.Name
+            $metrics["gpu_ram_mb"] = [math]::Round($gpu.AdapterRAM / 1MB, 0)
+        }
+    } catch {}
+
+    # Top processes by CPU
+    $topProcs = Get-Process | Sort-Object CPU -Descending | Select-Object -First 5 |
+        ForEach-Object { @{ name = $_.ProcessName; cpu = [math]::Round($_.CPU, 1); ram_mb = [math]::Round($_.WorkingSet64 / 1MB, 0) } }
+    $metrics["top_processes"] = $topProcs
+
+    return $metrics
+}
+
+function Send-Metrics($metrics) {
+    $body = @{
+        agent_name = $AgentName
+        timestamp = (Get-Date).ToString("o")
+        metrics = $metrics
+    } | ConvertTo-Json -Depth 5
+
+    try {
+        $response = Invoke-RestMethod -Uri "$ServerUrl/api/pc/heartbeat" `
+            -Method POST `
+            -Body $body `
+            -ContentType "application/json" `
+            -TimeoutSec 15
+
+        return $true
+    } catch {
+        Write-Host "  [!] Send failed: $($_.Exception.Message)" -ForegroundColor Yellow
+        return $false
+    }
+}
+
+# Main loop
+Write-Host "Agent started. Press Ctrl+C to stop." -ForegroundColor Green
+Write-Host ""
+
+while ($true) {
+    $ts = Get-Date -Format "HH:mm:ss"
+
+    try {
+        $metrics = Get-SystemMetrics
+        $ok = Send-Metrics $metrics
+
+        if ($ok) {
+            Write-Host "[$ts] OK — CPU: $($metrics.cpu_percent)% RAM: $($metrics.ram_percent)% Disk: $($metrics.disk_percent)%" -ForegroundColor Green
+        }
+    } catch {
+        Write-Host "[$ts] ERROR: $($_.Exception.Message)" -ForegroundColor Red
+    }
+
+    Start-Sleep -Seconds $Interval
+}