feat(codex): добавлен proxy launcher для GUI

- Зачем:
  - нужен удобный запуск Codex GUI с proxy-окружением Windows и WSL.
- Что:
  - добавлен PowerShell launcher, выставляющий proxy-переменные и WSLENV.
  - добавлен chezmoi-скрипт для Start Menu ярлыка Codex Proxy.
  - обновлена документация по использованию Codex GUI через прокси.
- Проверка:
  - git diff --cached --check.
  - запуск launcher и повторный запуск shortcut-скрипта.

chezmoi/dot_local/bin/start-codex-proxy.ps1

@@ -0,0 +1,77 @@
+$ErrorActionPreference = 'Stop'
+
+$ProxyHostName = 'hproxy.local'
+$ProxyPort = 12334
+$HttpProxy = "http://${ProxyHostName}:${ProxyPort}"
+$SocksProxy = "socks5://${ProxyHostName}:${ProxyPort}"
+$NoProxy = "${ProxyHostName},localhost,127.0.0.1,::1,[::1],.concept-software.ru"
+
+function Set-ProxyEnvironment {
+    $env:HTTP_PROXY = $HttpProxy
+    $env:HTTPS_PROXY = $HttpProxy
+    $env:ALL_PROXY = $SocksProxy
+    $env:NO_PROXY = $NoProxy
+
+    $env:http_proxy = $HttpProxy
+    $env:https_proxy = $HttpProxy
+    $env:all_proxy = $SocksProxy
+    $env:no_proxy = $NoProxy
+}
+
+function Add-WslEnvEntries {
+    $RequiredEntries = @(
+        'HTTP_PROXY/u',
+        'HTTPS_PROXY/u',
+        'ALL_PROXY/u',
+        'NO_PROXY/u',
+        'http_proxy/u',
+        'https_proxy/u',
+        'all_proxy/u',
+        'no_proxy/u'
+    )
+
+    $Entries = New-Object System.Collections.Generic.List[string]
+    if (-not [string]::IsNullOrWhiteSpace($env:WSLENV)) {
+        foreach ($Entry in ($env:WSLENV -split ':')) {
+            if (-not [string]::IsNullOrWhiteSpace($Entry) -and -not $Entries.Contains($Entry)) {
+                [void]$Entries.Add($Entry)
+            }
+        }
+    }
+
+    foreach ($Entry in $RequiredEntries) {
+        if (-not $Entries.Contains($Entry)) {
+            [void]$Entries.Add($Entry)
+        }
+    }
+
+    $env:WSLENV = [string]::Join(':', $Entries)
+}
+
+function Get-CodexExecutable {
+    $Package = Get-AppxPackage -Name 'OpenAI.Codex' -ErrorAction SilentlyContinue |
+        Select-Object -First 1
+
+    if ($null -eq $Package) {
+        throw 'Codex Windows App is not installed. Expected AppX package: OpenAI.Codex.'
+    }
+
+    $Manifest = Get-AppxPackageManifest $Package
+    $Application = @($Manifest.Package.Applications.Application) | Select-Object -First 1
+    if ($null -eq $Application -or [string]::IsNullOrWhiteSpace($Application.Executable)) {
+        throw 'Codex Windows App manifest does not contain an executable entry.'
+    }
+
+    $Executable = Join-Path $Package.InstallLocation ([string]$Application.Executable)
+    if (-not (Test-Path -LiteralPath $Executable)) {
+        throw "Codex Windows App executable was not found: $Executable"
+    }
+
+    return $Executable
+}
+
+Set-ProxyEnvironment
+Add-WslEnvEntries
+
+$CodexExecutable = Get-CodexExecutable
+Start-Process -FilePath $CodexExecutable