hermes-agent/scripts/desktop-update/windows.ps1

745 lines
35 KiB
PowerShell

# windows.ps1 -- repo-owned Windows Desktop update hand-off.
#
# WHY THIS EXISTS (the frozen-binary problem): the Desktop's Update button
# used to hand off exclusively to the staged Tauri binary
# (%HERMES_HOME%\hermes-setup.exe). That binary has no self-update path --
# copy_self_to_hermes_home deliberately no-ops during --update -- so every
# updater-side fix (cache refresh #67369, marker self-adopt #74782, straggler
# handling) only reaches users when a new installer is built, signed, and
# published. In practice binaries go months stale and users hit long-fixed
# bugs on every update (the 2026-08-09 incident chain).
#
# This script lives in the repo checkout, so EVERY `hermes update` refreshes
# the very code that drives the next update. The Desktop spawns it through a
# `cmd start` wrapper (see wrapHandoffForDetachedConsole in
# apps/desktop/electron/updater-process.ts -- a bare detached+hidden
# powershell dies before -File runs) and exits; only PowerShell itself -- an
# OS component -- is "frozen".
#
# CONTRACT (keep in sync with apps/desktop/electron/main.ts):
# cmd /d /s /c start "" /min powershell -NoProfile -ExecutionPolicy Bypass
# -File scripts\desktop-update\windows.ps1
# -InstallRoot <path> repo checkout (HERMES_HOME\hermes-agent)
# -Branch <ref> branch to update against
# -DesktopPid <pid> the Electron main process to wait out
# [-RelaunchExe <path>] Hermes.exe to start when done (omit = no relaunch)
# [-NoUi] headless (tests); default shows a progress window
# [-NoMarkerCleanup] leave .hermes-update-in-progress in place (tests)
#
# SAFETY POSTURE: both preflight gates FAIL CLOSED. A Desktop that never
# exits, or a venv shim that never unlocks, aborts the hand-off without
# mutating the install -- a skipped update is recoverable, a half-updated
# venv is not. Every exit path (success, abort, crash) writes
# .hermes-update-result.json for the relaunched Desktop to surface, and
# relaunches the Desktop so the user is never left stranded.
#
# Marker: we claim HERMES_HOME\.hermes-update-in-progress with OUR pid as
# step 0 (the wrapper cmd.exe pid the Desktop saw is useless -- it exits
# immediately). hermes_cli/update_lock.py's ancestry rule lets our
# `hermes update` child adopt the claim; electron/update-marker.ts parks a
# relaunched Desktop on it. Cleanup only removes the marker while WE still
# own it (a handoff partner that rewrote it keeps its claim).
param(
[string]$InstallRoot,
[string]$Branch = "main",
[int]$DesktopPid = 0,
[string]$RelaunchExe = "",
[switch]$NoUi,
[switch]$NoMarkerCleanup,
[switch]$SelfTestUi
)
if (-not $SelfTestUi -and -not $InstallRoot) {
# Mandatory in spirit; relaxed in the signature only so -SelfTestUi can
# drive the UI without a checkout.
throw "-InstallRoot is required"
}
$ErrorActionPreference = "Continue"
# Foreground helpers: the script is spawned via `cmd start /min`, so its
# WinForms window comes up backgrounded unless we explicitly claim focus --
# and after the update we must hand focus TO the relaunched Desktop (a
# WMI-spawned process starts unfocused). AllowSetForegroundWindow lets us
# pass our foreground right on to the new Hermes.exe pid.
try {
Add-Type -Namespace HermesHandoff -Name Win32 -MemberDefinition @'
[DllImport("user32.dll")] public static extern bool SetForegroundWindow(System.IntPtr hWnd);
[DllImport("user32.dll")] public static extern bool AllowSetForegroundWindow(int dwProcessId);
[DllImport("user32.dll")] public static extern bool ShowWindow(System.IntPtr hWnd, int nCmdShow);
'@ -ErrorAction Stop
$script:Win32 = $true
} catch { $script:Win32 = $false }
# Render UTF-8 glyphs (checkmarks, arrows) correctly in our own console echo
# too; the legacy conhost default OEM codepage shows them as mojibake.
try {
[Console]::OutputEncoding = [System.Text.Encoding]::UTF8
$OutputEncoding = [System.Text.Encoding]::UTF8
} catch {}
$TempDir = if ($env:TEMP) { $env:TEMP } else { [System.IO.Path]::GetTempPath() }
$HermesHome = if ($InstallRoot) { Split-Path -Parent $InstallRoot } else { $TempDir }
$MarkerPath = Join-Path $HermesHome ".hermes-update-in-progress"
$LogDir = Join-Path $HermesHome "logs"
$LogPath = Join-Path $LogDir "desktop-update-handoff.log"
$ResultPath = Join-Path $HermesHome ".hermes-update-result.json"
$script:Ui = $null
function Write-HandoffLog([string]$Message) {
$line = "{0:yyyy-MM-ddTHH:mm:ssK} {1}" -f (Get-Date), $Message
try { Add-Content -LiteralPath $LogPath -Value $line -Encoding UTF8 } catch {}
Write-Host $line
}
# ── The shim: repo-owned HTML in a chromeless Edge app window ──────────────
# The window is a veneer, not a participant: the update runs identically with
# or without it (Edge missing/failed degrades to the WinForms card below,
# then log-only). It streams nothing and knows nothing — it polls /progress
# for one of two events, `done` or `error`, and reacts. The loopback listener
# is not a web server in any meaningful sense; it exists because file:// pages
# cannot receive events from a detached process. Salvaged from the web-shell
# spike (Co-authored-by: teknium1), reshaped to the quiet update-surface
# contract (#75895/#83634): loader, one title, one line, no dashboard.
$script:UiState = [hashtable]::Synchronized(@{
status = "running" # running | done | error
message = ""
})
$script:UiServer = $null # @{ Listener; Runspace; PowerShell; Port; EdgeProc }
function Get-UiHtmlPath {
# Lives next to this script in the checkout. Missing file = fall back to
# WinForms (old checkouts mid-update, partial syncs).
$p = Join-Path $PSScriptRoot "ui.html"
if (Test-Path -LiteralPath $p) { return $p }
return $null
}
function Find-EdgeExe {
foreach ($root in @($env:ProgramFiles, ${env:ProgramFiles(x86)}, $env:LOCALAPPDATA)) {
if (-not $root) { continue }
$p = Join-Path $root "Microsoft\Edge\Application\msedge.exe"
if (Test-Path -LiteralPath $p) { return $p }
}
return $null
}
function Start-UiServer([string]$HtmlPath) {
# In-process HTTP on a loopback ephemeral port, served from a dedicated
# runspace so the main thread never blocks on Accept. Plain TcpListener
# instead of HttpListener: no URL ACL / netsh reservation semantics to
# trip over, and two GET routes don't need more.
try {
$listener = [System.Net.Sockets.TcpListener]::new([System.Net.IPAddress]::Loopback, 0)
$listener.Start()
$port = ([System.Net.IPEndPoint]$listener.LocalEndpoint).Port
$rs = [runspacefactory]::CreateRunspace()
$rs.Open()
$rs.SessionStateProxy.SetVariable("Listener", $listener)
$rs.SessionStateProxy.SetVariable("State", $script:UiState)
$rs.SessionStateProxy.SetVariable("HtmlBytes", [System.IO.File]::ReadAllBytes($HtmlPath))
$ps = [powershell]::Create()
$ps.Runspace = $rs
[void]$ps.AddScript({
function Send-Response($Stream, [string]$Status, [string]$ContentType, [byte[]]$Body) {
$head = "HTTP/1.1 $Status`r`nContent-Type: $ContentType`r`nContent-Length: $($Body.Length)`r`nCache-Control: no-store`r`nConnection: close`r`n`r`n"
$headBytes = [System.Text.Encoding]::ASCII.GetBytes($head)
$Stream.Write($headBytes, 0, $headBytes.Length)
$Stream.Write($Body, 0, $Body.Length)
$Stream.Flush()
}
while ($true) {
try { $client = $Listener.AcceptTcpClient() } catch { break } # Stop() ends the loop
try {
$client.ReceiveTimeout = 2000
$stream = $client.GetStream()
$reader = [System.IO.StreamReader]::new($stream, [System.Text.Encoding]::ASCII, $false, 1024, $true)
$request = $reader.ReadLine()
# Drain headers so the client doesn't see a reset mid-send.
while ($true) { $h = $reader.ReadLine(); if ($null -eq $h -or $h -eq "") { break } }
if ($request -match "^GET /progress") {
$snapshot = @{
status = $State.status
message = $State.message
} | ConvertTo-Json -Compress
Send-Response $stream "200 OK" "application/json; charset=utf-8" ([System.Text.Encoding]::UTF8.GetBytes($snapshot))
} elseif ($request -match "^GET / ") {
Send-Response $stream "200 OK" "text/html; charset=utf-8" $HtmlBytes
} else {
Send-Response $stream "404 Not Found" "text/plain" ([System.Text.Encoding]::ASCII.GetBytes("not found"))
}
} catch {
# Per-connection failure: drop it, keep serving.
} finally {
try { $client.Close() } catch {}
}
}
})
[void]$ps.BeginInvoke()
return @{ Listener = $listener; Runspace = $rs; PowerShell = $ps; Port = $port; EdgeProc = $null }
} catch {
try { if ($listener) { $listener.Stop() } } catch {}
return $null
}
}
function Stop-UiServer([switch]$LeaveWindow) {
if (-not $script:UiServer) { return }
try { $script:UiServer.Listener.Stop() } catch {}
try { $script:UiServer.PowerShell.Stop() } catch {}
try { $script:UiServer.Runspace.Close() } catch {}
# On success the window closes itself out from under the user (the whole
# point); on error we LEAVE it — the page holds the failure state and the
# user closes it when they've read it.
if (-not $LeaveWindow) {
try {
if ($script:UiServer.EdgeProc -and -not $script:UiServer.EdgeProc.HasExited) {
$script:UiServer.EdgeProc.CloseMainWindow() | Out-Null
}
} catch {}
}
$script:UiServer = $null
}
function Publish-UiEvent([string]$Status, [string]$Message) {
# The event the shim listens for. One beat of poll latency (400ms) before
# teardown so the page actually renders the terminal state.
$script:UiState.message = $Message
$script:UiState.status = $Status
if ($script:UiServer) { Start-Sleep -Milliseconds 900 }
}
# ── Fallback card (no Edge / no HTML): same shape in WinForms ──────────────
# Matches the shim pixel-for-pixel in spirit -- loader, one title, one static
# line, OS light/dark -- so degrading is invisible to the user.
function Get-AppsUseLightTheme {
try {
$v = Get-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize" -Name AppsUseLightTheme -ErrorAction Stop
return [int]$v.AppsUseLightTheme -ne 0
} catch { return $true }
}
function Show-ProgressWindow {
if ($NoUi) { return }
# ── Primary: the HTML shim in a chromeless Edge app window ─────────────
# Same footprint as the card (280x320), spawned as a normal window: it
# claims attention once by appearing, then competes with nothing.
$htmlPath = Get-UiHtmlPath
$edge = Find-EdgeExe
if ($htmlPath -and $edge) {
$server = Start-UiServer $htmlPath
if ($server) {
try {
# Dedicated tiny profile dir: guarantees a NEW WINDOW + process
# we own (a default-profile launch delegates to an existing
# Edge and returns instantly, leaving nothing to close), and
# avoids touching the user's real browser profile.
$edgeProfile = Join-Path $TempDir ("hermes-update-ui-{0}" -f $PID)
$edgeArgs = @(
"--app=http://127.0.0.1:$($server.Port)/",
"--user-data-dir=$edgeProfile",
"--no-first-run", "--no-default-browser-check",
"--disable-features=msImplicitSignin",
"--window-size=280,320"
)
$server.EdgeProc = Start-Process -FilePath $edge -ArgumentList $edgeArgs -PassThru
$script:UiServer = $server
Write-HandoffLog "shim: Edge app window on 127.0.0.1:$($server.Port)"
return
} catch {
try { $server.Listener.Stop() } catch {}
# fall through to WinForms
}
}
}
try {
Add-Type -AssemblyName System.Windows.Forms | Out-Null
Add-Type -AssemblyName System.Drawing | Out-Null
$light = Get-AppsUseLightTheme
# Dark seeds are the settled installer palette: neutral charcoal,
# never brand blue.
if ($light) {
$back = [System.Drawing.Color]::White
$fore = [System.Drawing.ColorTranslator]::FromHtml("#1A1A1A")
$mute = [System.Drawing.ColorTranslator]::FromHtml("#6B6B6B")
} else {
$back = [System.Drawing.ColorTranslator]::FromHtml("#232323")
$fore = [System.Drawing.ColorTranslator]::FromHtml("#F5F5F5")
$mute = [System.Drawing.ColorTranslator]::FromHtml("#A8A8A8")
}
$form = New-Object System.Windows.Forms.Form
$form.Text = "Hermes"
$form.FormBorderStyle = "FixedSingle"
$form.MaximizeBox = $false
$form.MinimizeBox = $false
$form.ControlBox = $false
$form.ClientSize = New-Object System.Drawing.Size(280, 320)
$form.StartPosition = "CenterScreen"
$form.BackColor = $back
$bar = New-Object System.Windows.Forms.ProgressBar
$bar.Style = "Marquee"
$bar.MarqueeAnimationSpeed = 30
$bar.SetBounds(60, 128, 160, 8)
$title = New-Object System.Windows.Forms.Label
$title.Text = "Updating Hermes"
$title.Font = New-Object System.Drawing.Font("Segoe UI Semibold", 12)
$title.ForeColor = $fore
$title.TextAlign = "MiddleCenter"
$title.SetBounds(16, 156, 248, 28)
$sub = New-Object System.Windows.Forms.Label
$sub.Text = "Hermes will open once done."
$sub.Font = New-Object System.Drawing.Font("Segoe UI", 9)
$sub.ForeColor = $mute
$sub.TextAlign = "TopCenter"
$sub.SetBounds(24, 190, 232, 48)
$form.Controls.Add($bar)
$form.Controls.Add($title)
$form.Controls.Add($sub)
$form.Show()
# `cmd start /min` spawned us backgrounded, so the card comes up
# behind everything without one explicit activation. Claim it ONCE
# (so the user knows the update started), then never again — the
# window is decoration and competes with nothing (no TopMost).
try {
$form.Activate()
if ($script:Win32) { [HermesHandoff.Win32]::SetForegroundWindow($form.Handle) | Out-Null }
} catch {}
[System.Windows.Forms.Application]::DoEvents()
$script:Ui = [pscustomobject]@{ Form = $form; Bar = $bar; Title = $title; Sub = $sub }
} catch {
# Headless session / WinForms unavailable: degrade to log-only.
$script:Ui = $null
}
}
function Show-ErrorFinale([string]$Message) {
# Terse by design: a title + the debug-share pointer. No error text, no
# log tail -- `hermes debug share` uploads the real evidence and the
# relaunched Desktop surfaces the result message.
if ($script:UiServer) {
# The shim renders the error state itself; leave the window up for
# the user to read and close. Nothing to hold for — the page keeps
# the state after the listener dies.
Publish-UiEvent "error" $Message
Stop-UiServer -LeaveWindow
return
}
if (-not $script:Ui) { return }
try {
$ui = $script:Ui
$ui.Bar.Visible = $false
$ui.Title.Text = "Failed to update"
$ui.Sub.Text = "Run `"hermes debug share`" in a terminal to send a report."
$close = New-Object System.Windows.Forms.Button
$close.Text = "Close"
$close.SetBounds(100, 252, 80, 28)
$close.FlatStyle = "Flat"
$close.ForeColor = $ui.Title.ForeColor
$script:ErrorDismissed = $false
$close.Add_Click({ $script:ErrorDismissed = $true })
$ui.Form.Controls.Add($close)
$ui.Form.AcceptButton = $close
try {
$ui.Form.Activate()
if ($script:Win32) { [HermesHandoff.Win32]::SetForegroundWindow($ui.Form.Handle) | Out-Null }
} catch {}
# Hold for dismissal so the failure is actually seen, but never park
# forever -- the marker is already cleaned up and the relaunched
# Desktop re-surfaces the failure, so walking away costs nothing.
$deadline = (Get-Date).AddMinutes(5)
while (-not $script:ErrorDismissed -and (Get-Date) -lt $deadline -and $ui.Form.Visible) {
[System.Windows.Forms.Application]::DoEvents()
Start-Sleep -Milliseconds 100
}
} catch {}
}
function Show-ManualFinale([string]$Message) {
# Update landed but the Desktop did not verifiably come back. Same terse
# shape as the error finale, success glyph semantics: the shim renders
# `manual` itself; the WinForms card swaps its copy. Held so the user
# actually sees the instruction — this window is the only surface until
# they reopen Hermes themselves.
if ($script:UiServer) {
Publish-UiEvent "manual" $Message
Stop-UiServer -LeaveWindow
return
}
if (-not $script:Ui) { return }
try {
$ui = $script:Ui
$ui.Bar.Visible = $false
$ui.Title.Text = "Update complete"
$ui.Sub.Text = $Message
$close = New-Object System.Windows.Forms.Button
$close.Text = "Close"
$close.SetBounds(100, 252, 80, 28)
$close.FlatStyle = "Flat"
$close.ForeColor = $ui.Title.ForeColor
$script:ErrorDismissed = $false
$close.Add_Click({ $script:ErrorDismissed = $true })
$ui.Form.Controls.Add($close)
$ui.Form.AcceptButton = $close
try {
$ui.Form.Activate()
if ($script:Win32) { [HermesHandoff.Win32]::SetForegroundWindow($ui.Form.Handle) | Out-Null }
} catch {}
$deadline = (Get-Date).AddMinutes(5)
while (-not $script:ErrorDismissed -and (Get-Date) -lt $deadline -and $ui.Form.Visible) {
[System.Windows.Forms.Application]::DoEvents()
Start-Sleep -Milliseconds 100
}
} catch {}
}
function Close-ProgressWindow {
if ($script:UiServer) {
# Success event: the shim flips to the checkmark, then the window
# closes out from under the user as the Desktop comes back.
Publish-UiEvent "done" ""
Stop-UiServer
}
if ($script:Ui) {
try { $script:Ui.Form.Close() } catch {}
$script:Ui = $null
}
}
function Write-Result([bool]$Ok, [int]$Code, [string]$Message, [bool]$ManualAction = $false) {
# Consumed (read + deleted) by the relaunched Desktop on boot so the
# user actually SEES how a detached update ended. $ManualAction marks an
# ok result the user still must act on -- the Desktop surfaces those in
# a dialog, not just the log (same protocol as posix.sh).
try {
$obj = @{
ok = $Ok
exit_code = $Code
manual = $ManualAction
message = $Message
branch = $Branch
finished_at = [int][double]::Parse((Get-Date -UFormat %s), [System.Globalization.CultureInfo]::InvariantCulture)
} | ConvertTo-Json -Compress
[System.IO.File]::WriteAllText($ResultPath, $obj)
} catch {}
}
function Remove-MarkerIfOwned {
if ($NoMarkerCleanup) { return }
try {
if (Test-Path -LiteralPath $MarkerPath) {
$firstLine = (Get-Content -LiteralPath $MarkerPath -TotalCount 1 -ErrorAction SilentlyContinue)
if ("$firstLine".Trim() -eq "$PID") {
Remove-Item -LiteralPath $MarkerPath -Force -ErrorAction SilentlyContinue
Write-HandoffLog "removed update marker (owned)"
} else {
Write-HandoffLog "leaving update marker: owned by pid '$firstLine', not us ($PID)"
}
}
} catch {}
}
function Start-DesktopRelaunch {
# Returns $true only when a launch VERIFIABLY happened (WMI accepted and
# the pid exists, or the fallback spawn returned a live process). The
# finally block downgrades the on-screen/on-disk outcome when it didn't
# — the sibling truth contract to posix.sh's launch acceptance.
if (-not ($RelaunchExe -and (Test-Path -LiteralPath $RelaunchExe))) { return $false }
Write-HandoffLog "relaunching desktop: $RelaunchExe"
# DO NOT spawn Hermes.exe as our child: Electron/Chromium calls
# AttachConsole(ATTACH_PARENT_PROCESS) at boot, so a Desktop launched
# directly from this console PowerShell latches onto OUR console --
# the console window then outlives the script (it can't close while
# an attached process lives), and closing it kills the freshly
# relaunched GUI with it. Create the process via WMI instead: the
# parent becomes WmiPrvSE.exe and there is no console to inherit or
# attach -- same detachment explorer.exe gives a normal launch.
$spawned = $false
try {
$workDir = Split-Path -Parent $RelaunchExe
$r = Invoke-CimMethod -ClassName Win32_Process -MethodName Create -Arguments @{
CommandLine = ('"{0}"' -f $RelaunchExe)
CurrentDirectory = $workDir
} -ErrorAction Stop
if ($r -and $r.ReturnValue -eq 0) {
Write-HandoffLog "desktop relaunched detached (pid $($r.ProcessId))"
$spawned = $true
# Hand our foreground rights to the new Desktop and focus its
# main window once it exists. A WMI-spawned process starts
# unfocused, and Windows only lets the CURRENT foreground
# owner (us, while the progress window is up / just closed)
# delegate that right. Poll briefly for the window: Electron
# takes a couple seconds to create it.
try {
if ($script:Win32) {
[HermesHandoff.Win32]::AllowSetForegroundWindow([int]$r.ProcessId) | Out-Null
$deadline = (Get-Date).AddSeconds(20)
while ((Get-Date) -lt $deadline) {
$hwnd = [System.IntPtr]::Zero
try {
$p = Get-Process -Id $r.ProcessId -ErrorAction Stop
$hwnd = $p.MainWindowHandle
} catch {
# Process died before showing a window — that is a
# failed launch, not merely an unfocused one.
Write-HandoffLog "WARNING: relaunched desktop exited before its window appeared"
$spawned = $false
break
}
if ($hwnd -ne [System.IntPtr]::Zero) {
[HermesHandoff.Win32]::ShowWindow($hwnd, 9) | Out-Null # SW_RESTORE
[HermesHandoff.Win32]::SetForegroundWindow($hwnd) | Out-Null
Write-HandoffLog "focused relaunched desktop window"
break
}
Start-Sleep -Milliseconds 400
}
}
} catch {
Write-HandoffLog "WARNING: could not focus relaunched desktop: $($_.Exception.Message)"
}
} else {
Write-HandoffLog "WARNING: WMI relaunch returned $($r.ReturnValue); falling back"
}
} catch {
Write-HandoffLog "WARNING: WMI relaunch failed: $($_.Exception.Message); falling back"
}
if (-not $spawned) {
try {
# Fallback keeps the old behavior (console tie-in and all) --
# a tethered Desktop beats no Desktop.
$p = Start-Process -FilePath $RelaunchExe -WorkingDirectory (Split-Path -Parent $RelaunchExe) -PassThru
Start-Sleep -Milliseconds 1500
if ($p -and -not $p.HasExited) { $spawned = $true }
elseif ($p) { Write-HandoffLog "WARNING: fallback relaunch exited immediately" }
} catch {
Write-HandoffLog "WARNING: desktop relaunch failed: $($_.Exception.Message)"
}
}
return $spawned
}
function Invoke-HermesStep([string]$Exe, [string[]]$HermesArgs, [string]$Tag) {
# The window shows nothing live, so no line-pump: both pipes drain
# asynchronously (no deadlock however chatty the child) while a small
# DoEvents loop keeps the marquee animating through long silent
# stretches (pip installs) -- the old EndOfStream pump blocked on quiet
# children and froze it. Full output still lands in the hand-off log
# afterwards, where `hermes debug share` picks it up.
# System.Diagnostics.Process directly: Start-Process's .ExitCode is
# unreliably $null under PS 5.1 even with the Handle-touch workaround.
$psi = New-Object System.Diagnostics.ProcessStartInfo
$psi.FileName = $Exe
# .Arguments string (PS 5.1 / .NET Framework has no ArgumentList).
# Args here are fixed flags + a branch ref; quote each defensively.
$psi.Arguments = ($HermesArgs | ForEach-Object { '"{0}"' -f ($_ -replace '"', '\"') }) -join ' '
$psi.UseShellExecute = $false
$psi.RedirectStandardOutput = $true
$psi.RedirectStandardError = $true
# hermes update prints UTF-8 (checkmarks, arrows, box glyphs). PS 5.1
# defaults these readers to the OEM codepage, which mangles every
# multi-byte glyph into mojibake in the log.
$psi.StandardOutputEncoding = [System.Text.Encoding]::UTF8
$psi.StandardErrorEncoding = [System.Text.Encoding]::UTF8
# And ask the child to actually EMIT UTF-8: Python decides its stdio
# encoding from the console codepage when attached to one.
$psi.EnvironmentVariables["PYTHONIOENCODING"] = "utf-8"
$psi.EnvironmentVariables["PYTHONUTF8"] = "1"
$psi.CreateNoWindow = $true
$proc = [System.Diagnostics.Process]::Start($psi)
$outTask = $proc.StandardOutput.ReadToEndAsync()
$errTask = $proc.StandardError.ReadToEndAsync()
while (-not $proc.HasExited) {
Start-Sleep -Milliseconds 150
if ($script:Ui) { [System.Windows.Forms.Application]::DoEvents() }
}
$proc.WaitForExit()
$outText = $outTask.Result
$errText = $errTask.Result
foreach ($ln in ($outText -split "`r?`n")) {
if ($ln.Trim()) { Write-HandoffLog ("{0}| {1}" -f $Tag, $ln) }
}
foreach ($ln in ($errText -split "`r?`n")) {
if ($ln.Trim()) { Write-HandoffLog ("{0}!| {1}" -f $Tag, $ln) }
}
$all = $outText
if ($errText) { $all += "`n" + $errText }
return @{ Code = $proc.ExitCode; Output = $all }
}
$finalCode = 1
$finalMsg = "update did not complete"
# ── -SelfTestUi: drive the shim to both terminal states, no update ─────────
# Manual QA for the Edge shell without a checkout or a real update. Exits
# before the marker/desktop/venv machinery — touches nothing. Off Windows
# (or without Edge) the loopback server still starts and the URL prints, so
# the page can be QA'd in any browser; HERMES_SELFTEST_FAIL=1 exercises the
# error state, HERMES_SELFTEST_HOLD_SECONDS delays the terminal event.
if ($SelfTestUi) {
New-Item -ItemType Directory -Path $LogDir -Force -ErrorAction SilentlyContinue | Out-Null
Show-ProgressWindow
if (-not $script:UiServer) {
$htmlPath = Get-UiHtmlPath
if ($htmlPath) {
$script:UiServer = Start-UiServer $htmlPath
}
}
if ($script:UiServer) {
Write-Host "SELF-TEST: shim at http://127.0.0.1:$($script:UiServer.Port)/"
}
Write-HandoffLog "SELF-TEST: shim simulation (no update will run)"
$hold = 6
if ($env:HERMES_SELFTEST_HOLD_SECONDS) { $hold = [int]$env:HERMES_SELFTEST_HOLD_SECONDS }
Start-Sleep -Seconds $hold
if ($env:HERMES_SELFTEST_FAIL) {
Show-ErrorFinale "self-test error state"
} else {
Close-ProgressWindow
}
exit 0
}
try {
New-Item -ItemType Directory -Path $LogDir -Force -ErrorAction SilentlyContinue | Out-Null
Remove-Item -LiteralPath $ResultPath -Force -ErrorAction SilentlyContinue
Show-ProgressWindow
Write-HandoffLog "hand-off start: root=$InstallRoot branch=$Branch desktopPid=$DesktopPid pid=$PID"
# -- 0. Claim the update marker with OUR pid ---------------------------
try {
$epoch = [int][double]::Parse((Get-Date -UFormat %s), [System.Globalization.CultureInfo]::InvariantCulture)
# WriteAllText for byte-exact LF framing: Set-Content emits CRLF and
# the marker contract (Rust/TS/Python readers) is "<pid>\n<ts>\n".
[System.IO.File]::WriteAllText($MarkerPath, "$PID`n$epoch`n")
Write-HandoffLog "claimed update marker (pid $PID)"
} catch {
Write-HandoffLog "WARNING: could not write update marker: $($_.Exception.Message)"
}
# -- 1. Wait for the Desktop to exit (FAIL CLOSED) ----------------------
if ($DesktopPid -gt 0) {
$deadline = (Get-Date).AddSeconds(30)
while ((Get-Date) -lt $deadline) {
$proc = Get-Process -Id $DesktopPid -ErrorAction SilentlyContinue
if (-not $proc) { break }
Start-Sleep -Milliseconds 300
if ($script:Ui) { [System.Windows.Forms.Application]::DoEvents() }
}
if (Get-Process -Id $DesktopPid -ErrorAction SilentlyContinue) {
# A live Desktop means a live backend re-locking the venv at any
# moment. Updating under it is how installs brick. Abort.
$finalCode = 4
$finalMsg = "Update aborted: the Hermes window (pid $DesktopPid) did not exit within 30s. Nothing was changed. Close Hermes fully and try again."
Write-HandoffLog $finalMsg
exit $finalCode
}
Write-HandoffLog "desktop exited"
}
# -- 2. Wait for the venv shim to unlock (FAIL CLOSED) ------------------
$shim = Join-Path $InstallRoot "venv\Scripts\hermes.exe"
if (Test-Path -LiteralPath $shim) {
$unlocked = $false
$deadline = (Get-Date).AddSeconds(20)
while ((Get-Date) -lt $deadline) {
try {
$fs = [System.IO.File]::Open($shim, 'Open', 'ReadWrite', 'None')
$fs.Close()
$unlocked = $true
break
} catch {
Start-Sleep -Milliseconds 400
if ($script:Ui) { [System.Windows.Forms.Application]::DoEvents() }
}
}
if (-not $unlocked) {
# Something still maps the venv. --force-ing past it guarantees a
# half-updated venv (the exact 2026-08-09 Access-denied brick).
$finalCode = 5
$finalMsg = "Update aborted: another process is still holding the Hermes install open (venv\Scripts\hermes.exe locked after 20s). Nothing was changed. Close other Hermes windows/terminals and try again."
Write-HandoffLog $finalMsg
exit $finalCode
}
Write-HandoffLog "venv shim unlocked"
}
# -- 3. Run the update from the CURRENT checkout ------------------------
# --force skips only the hermes.exe shim guard, which step 2 just PROVED
# is unlocked; the venv-python holder guard (orphan reap included) stays
# active. Our marker claim is adopted by the child via update_lock.py's
# process-ancestry rule.
$hermesExe = Join-Path $InstallRoot "venv\Scripts\hermes.exe"
if (-not (Test-Path -LiteralPath $hermesExe)) {
$finalCode = 3
$finalMsg = "Update aborted: $hermesExe is missing. The install needs repair (run the Hermes installer or `hermes doctor`)."
Write-HandoffLog $finalMsg
exit $finalCode
}
$updateArgs = @("update", "--yes", "--gateway", "--force", "--branch", $Branch)
Write-HandoffLog ("running: hermes " + ($updateArgs -join " "))
$res = Invoke-HermesStep $hermesExe $updateArgs "update"
Write-HandoffLog "hermes update exit code: $($res.Code)"
if ($res.Code -ne 0 -and $res.Code -ne 2) {
# One retry for the update-boundary class (fresh code on disk, stale
# code in memory). Exit 2 ("close all Hermes windows") is not retryable.
Write-HandoffLog "first attempt failed; retrying once (freshly pulled fix loads on the second run)"
$res = Invoke-HermesStep $hermesExe $updateArgs "update"
Write-HandoffLog "retry exit code: $($res.Code)"
}
# -- 4. Truthful completion: don't trust exit 0 -------------------------
# `hermes update` treats a Desktop GUI build failure as NON-fatal (prints
# a one-line warning, exits 0). For a Desktop-DRIVEN update that warning
# is fatal: we would relaunch the old exe and call it success. Detect it,
# retry the build once, and propagate honestly.
$desktopBuildFailed = $false
if ($res.Code -eq 0 -and $res.Output -match "Desktop build failed") {
Write-HandoffLog "hermes update reported a desktop build failure (non-fatal there, fatal here); retrying build"
$rebuild = Invoke-HermesStep $hermesExe @("desktop", "--force-build", "--build-only") "rebuild"
Write-HandoffLog "desktop rebuild exit code: $($rebuild.Code)"
if ($rebuild.Code -ne 0) { $desktopBuildFailed = $true }
}
if ($res.Code -eq 0 -and -not $desktopBuildFailed) {
$finalCode = 0
$finalMsg = "Update complete."
} elseif ($desktopBuildFailed) {
$finalCode = 6
$finalMsg = "Code and dependencies updated, but the Desktop app REBUILD FAILED - you are running the previous build. Run `hermes desktop --force-build` from a terminal to retry."
} else {
$finalCode = $res.Code
$finalMsg = "Update failed (exit $($res.Code)). Run `hermes debug share` in a terminal to send a report."
}
exit $finalCode
} finally {
# Truth ordering (sibling contract to posix.sh finish()):
# 1. durable result + marker removal (the relaunched Desktop consumes
# the result on boot and must not park on our marker);
# 2. attempt the relaunch and require ACCEPTANCE;
# 3. only then the terminal UI state — done means "Hermes is back",
# manual means "it is not, reopen it", error is error (and still
# tries to bring the app back after showing itself).
Write-Result ($finalCode -eq 0) $finalCode $finalMsg
Remove-MarkerIfOwned
if ($finalCode -ne 0) {
Show-ErrorFinale $finalMsg
Close-ProgressWindow
[void](Start-DesktopRelaunch)
} else {
$cameBack = Start-DesktopRelaunch
if (-not $cameBack -and $RelaunchExe) {
# Launch was due and did not verifiably land: truthful result
# for the next boot, manual state held on screen now.
$finalMsg = "Update complete. Reopen Hermes to finish (it could not restart itself)."
Write-Result $true 0 $finalMsg $true
Show-ManualFinale $finalMsg
}
Close-ProgressWindow
}
}