feat: init pc-monitor project

- Client: Go-based Windows hardware monitoring (CPU, GPU, memory, disk, network, power)
- Server: Go + Gin + SQLite backend with REST API
- Frontend: Vue 3 + Element Plus dashboard
- Docker deployment support
- Windows service installation script

client/install/install.ps1

@@ -0,0 +1,87 @@
+# PC Monitor Client Installation Script
+# Run as Administrator
+
+param(
+    [string]$ServerUrl = "http://your-server:8080",
+    [string]$InstallDir = "C:\Program Files\PCMonitor"
+)
+
+# Check if running as Administrator
+$isAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
+if (-not $isAdmin) {
+    Write-Error "Please run this script as Administrator"
+    exit 1
+}
+
+Write-Host "Installing PC Monitor Client..." -ForegroundColor Green
+
+# Create installation directory
+if (-not (Test-Path $InstallDir)) {
+    New-Item -ItemType Directory -Path $InstallDir -Force | Out-Null
+}
+
+# Copy executable
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$exePath = Join-Path $scriptDir "pc-monitor-client.exe"
+
+if (-not (Test-Path $exePath)) {
+    Write-Error "pc-monitor-client.exe not found in script directory"
+    exit 1
+}
+
+Copy-Item $exePath -Destination $InstallDir -Force
+
+# Create config file
+$configPath = Join-Path $InstallDir "config.yaml"
+@"
+server:
+  url: "$ServerUrl"
+  token: ""
+collect:
+  interval: 30s
+report:
+  interval: 60s
+"@ | Out-File -FilePath $configPath -Encoding UTF8
+
+# Create Windows Service using NSSM
+$nssmPath = Join-Path $InstallDir "nssm.exe"
+if (-not (Test-Path $nssmPath)) {
+    Write-Host "Downloading NSSM..." -ForegroundColor Yellow
+    $nssmUrl = "https://nssm.cc/release/nssm-2.24.zip"
+    $zipPath = Join-Path $InstallDir "nssm.zip"
+    Invoke-WebRequest -Uri $nssmUrl -OutFile $zipPath
+    Expand-Archive -Path $zipPath -DestinationPath $InstallDir -Force
+    $nssmExe = Get-ChildItem -Path $InstallDir -Recurse -Filter "nssm.exe" | Where-Object { $_.FullName -match "win64" } | Select-Object -First 1
+    if ($nssmExe) {
+        Copy-Item $nssmExe.FullName -Destination $nssmPath -Force
+    }
+    Remove-Item $zipPath -Force
+}
+
+# Install service
+$serviceName = "PCMonitor"
+$clientExe = Join-Path $InstallDir "pc-monitor-client.exe"
+
+& $nssmPath install $serviceName $clientExe
+& $nssmPath set $serviceName AppDirectory $InstallDir
+& $nssmPath set $serviceName DisplayName "PC Monitor Client"
+& $nssmPath set $serviceName Description "Monitors PC hardware metrics and reports to server"
+& $nssmPath set $serviceName Start SERVICE_AUTO_START
+& $nssmPath set $serviceName AppStdout (Join-Path $InstallDir "stdout.log")
+& $nssmPath set $serviceName AppStderr (Join-Path $InstallDir "stderr.log")
+
+# Start service
+Start-Service $serviceName
+
+Write-Host ""
+Write-Host "Installation complete!" -ForegroundColor Green
+Write-Host "Service '$serviceName' installed and started." -ForegroundColor Green
+Write-Host ""
+Write-Host "Configuration file: $configPath" -ForegroundColor Cyan
+Write-Host "Please edit the config file to set your server URL and token." -ForegroundColor Cyan
+Write-Host ""
+Write-Host "Useful commands:" -ForegroundColor Yellow
+Write-Host "  Start service:   Start-Service $serviceName"
+Write-Host "  Stop service:    Stop-Service $serviceName"
+Write-Host "  Service status:  Get-Service $serviceName"
+Write-Host "  View logs:       Get-Content (Join-Path $InstallDir 'stdout.log') -Tail 50"