feat(acp): hermes acp --setup-browser bootstraps browser tools for registry installs

acp_adapter/bootstrap/bootstrap_browser_tools.ps1

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+# bootstrap_browser_tools.ps1 — install agent-browser + Playwright Chromium
+# into ~/.hermes/node/ for use by Hermes Agent's browser tools on Windows.
+#
+# Targets the registry-install path: users who got Hermes via
+# `uvx --from 'hermes-agent[acp]==X' hermes-acp` don't have a repo clone,
+# so the install.ps1 `npm install`-in-repo flow doesn't apply. This script
+# is a self-contained, idempotent slice of install.ps1's browser block.
+#
+# Usage:
+#   .\bootstrap_browser_tools.ps1                # use defaults
+#   .\bootstrap_browser_tools.ps1 -Yes           # accept Chromium download
+#   .\bootstrap_browser_tools.ps1 -SkipChromium  # Node + agent-browser only
+#
+# Idempotent: re-running this is safe and fast.
+
+[CmdletBinding()]
+param(
+    [switch]$Yes,
+    [switch]$SkipChromium
+)
+
+$ErrorActionPreference = "Stop"
+$NodeVersion = "22"
+
+# ─────────────────────────────────────────────────────────────────────────
+# Logging
+# ─────────────────────────────────────────────────────────────────────────
+
+function Write-Info    { param([string]$msg) Write-Host "[*] $msg" -ForegroundColor Cyan    }
+function Write-Success { param([string]$msg) Write-Host "[+] $msg" -ForegroundColor Green   }
+function Write-Warn    { param([string]$msg) Write-Host "[!] $msg" -ForegroundColor Yellow  }
+function Write-Err     { param([string]$msg) Write-Host "[x] $msg" -ForegroundColor Red     }
+
+# ─────────────────────────────────────────────────────────────────────────
+# Paths
+# ─────────────────────────────────────────────────────────────────────────
+
+$HermesHome = $env:HERMES_HOME
+if (-not $HermesHome) {
+    $HermesHome = Join-Path $env:USERPROFILE ".hermes"
+}
+$NodePrefix = Join-Path $HermesHome "node"
+
+# ─────────────────────────────────────────────────────────────────────────
+# Step 1: Node.js
+# ─────────────────────────────────────────────────────────────────────────
+
+function Resolve-NpmExe {
+    # Same gotcha as install.ps1: prefer npm.cmd over npm.ps1 so the
+    # PowerShell execution policy doesn't block us.
+    $cmd = Get-Command npm -ErrorAction SilentlyContinue
+    if (-not $cmd) { return $null }
+    $npmExe = $cmd.Source
+    if ($npmExe -like "*.ps1") {
+        $sibling = Join-Path (Split-Path $npmExe -Parent) "npm.cmd"
+        if (Test-Path $sibling) { return $sibling }
+    }
+    return $npmExe
+}
+
+function Resolve-NpxExe {
+    $cmd = Get-Command npx -ErrorAction SilentlyContinue
+    if (-not $cmd) { return $null }
+    $npxExe = $cmd.Source
+    if ($npxExe -like "*.ps1") {
+        $sibling = Join-Path (Split-Path $npxExe -Parent) "npx.cmd"
+        if (Test-Path $sibling) { return $sibling }
+    }
+    return $npxExe
+}
+
+function Ensure-Node {
+    # System Node on PATH?
+    $sysNode = Get-Command node -ErrorAction SilentlyContinue
+    if ($sysNode) {
+        try {
+            $v = & $sysNode.Source --version
+            $major = [int]($v -replace '^v(\d+).*', '$1')
+            if ($major -ge 20) {
+                Write-Success "Node.js $v found on PATH"
+                return
+            }
+            Write-Warn "Node.js $v is older than v20 — installing managed Node."
+        } catch {
+            Write-Warn "Failed to query Node version: $_"
+        }
+    }
+
+    # Hermes-managed Node?
+    $managedNode = Join-Path $NodePrefix "node.exe"
+    if (Test-Path $managedNode) {
+        $v = & $managedNode --version
+        Write-Success "Node.js $v found (Hermes-managed at $NodePrefix)"
+        # Prepend to current-process PATH so subsequent npm/npx calls find it.
+        $env:PATH = "$NodePrefix;$env:PATH"
+        return
+    }
+
+    Write-Info "Installing Node.js $NodeVersion LTS into $NodePrefix ..."
+
+    $arch = if ([Environment]::Is64BitOperatingSystem) { "x64" } else { "x86" }
+    $indexUrl = "https://nodejs.org/dist/latest-v${NodeVersion}.x/"
+
+    try {
+        $indexPage = Invoke-WebRequest -Uri $indexUrl -UseBasicParsing
+        $matches = [regex]::Matches($indexPage.Content, "node-v${NodeVersion}\.\d+\.\d+-win-${arch}\.zip")
+        if ($matches.Count -eq 0) {
+            Write-Err "Could not locate Node.js $NodeVersion zip for win-$arch"
+            throw "no tarball"
+        }
+        $zipName = $matches[0].Value
+        $zipUrl = "$indexUrl$zipName"
+
+        $tmpDir = Join-Path $env:TEMP "hermes-node-$([guid]::NewGuid().ToString('N'))"
+        New-Item -ItemType Directory -Force -Path $tmpDir | Out-Null
+        $zipPath = Join-Path $tmpDir $zipName
+
+        Write-Info "Downloading $zipName ..."
+        Invoke-WebRequest -Uri $zipUrl -OutFile $zipPath -UseBasicParsing
+
+        Expand-Archive -Path $zipPath -DestinationPath $tmpDir -Force
+        $extracted = Get-ChildItem -Path $tmpDir -Directory | Where-Object { $_.Name -like "node-v*" } | Select-Object -First 1
+
+        if (-not $extracted) { Write-Err "Node.js extraction failed"; throw "extract" }
+
+        if (Test-Path $NodePrefix) { Remove-Item -Recurse -Force $NodePrefix }
+        New-Item -ItemType Directory -Force -Path $HermesHome | Out-Null
+        Move-Item -Path $extracted.FullName -Destination $NodePrefix
+
+        Remove-Item -Recurse -Force $tmpDir -ErrorAction SilentlyContinue
+
+        $env:PATH = "$NodePrefix;$env:PATH"
+        $v = & "$NodePrefix\node.exe" --version
+        Write-Success "Node.js $v installed to $NodePrefix"
+    } catch {
+        Write-Err "Node.js install failed: $_"
+        Write-Info "Install Node 20+ manually from https://nodejs.org/en/download/ and re-run."
+        throw
+    }
+}
+
+# ─────────────────────────────────────────────────────────────────────────
+# Step 2: agent-browser
+# ─────────────────────────────────────────────────────────────────────────
+
+function Ensure-AgentBrowser {
+    $npmExe = Resolve-NpmExe
+    if (-not $npmExe) {
+        Write-Err "npm not on PATH after Node install — aborting"
+        throw "npm missing"
+    }
+
+    # Already installed?
+    $existing = Get-Command agent-browser -ErrorAction SilentlyContinue
+    if ($existing) {
+        Write-Success "agent-browser already installed at $($existing.Source)"
+        return
+    }
+
+    # When the user has system Node (winget / installer-based), `npm install
+    # -g` writes to a directory that may require admin rights. Force the
+    # prefix to the user-writable Hermes-managed Node directory so we never
+    # need elevation and the agent can always find the result. Mirrors the
+    # bash bootstrap's `--prefix $NODE_PREFIX` strategy.
+    New-Item -ItemType Directory -Force -Path $NodePrefix | Out-Null
+
+    Write-Info "Installing agent-browser (npm, prefix=$NodePrefix)..."
+    & $npmExe install -g --prefix $NodePrefix --silent `
+        "agent-browser@^0.26.0" "@askjo/camofox-browser@^1.5.2"
+    if ($LASTEXITCODE -ne 0) {
+        Write-Err "npm install -g agent-browser failed (exit $LASTEXITCODE)"
+        throw "npm install"
+    }
+
+    # Windows npm global installs drop shims at $NodePrefix\ root (not bin/).
+    # Prepend to PATH so any subsequent npx call resolves them.
+    $env:PATH = "$NodePrefix;$env:PATH"
+
+    Write-Success "agent-browser installed to $NodePrefix"
+}
+
+# ─────────────────────────────────────────────────────────────────────────
+# Step 3: Playwright Chromium
+# ─────────────────────────────────────────────────────────────────────────
+
+function Find-SystemBrowser {
+    $candidates = @(
+        "C:\Program Files\Google\Chrome\Application\chrome.exe",
+        "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe",
+        "C:\Program Files\Chromium\Application\chromium.exe",
+        "${env:LOCALAPPDATA}\Google\Chrome\Application\chrome.exe",
+        "${env:LOCALAPPDATA}\Chromium\Application\chromium.exe"
+    )
+    foreach ($p in $candidates) {
+        if (Test-Path $p) { return $p }
+    }
+    # Edge — Chromium-based, agent-browser can use it
+    foreach ($p in @(
+        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe",
+        "C:\Program Files\Microsoft\Edge\Application\msedge.exe"
+    )) {
+        if (Test-Path $p) { return $p }
+    }
+    return $null
+}
+
+function Write-BrowserEnv {
+    param([string]$BrowserPath)
+    $envFile = Join-Path $HermesHome ".env"
+    New-Item -ItemType Directory -Force -Path $HermesHome | Out-Null
+    if (Test-Path $envFile) {
+        $existing = Get-Content $envFile -Raw -ErrorAction SilentlyContinue
+        if ($existing -and ($existing -match "(?m)^AGENT_BROWSER_EXECUTABLE_PATH=")) {
+            return
+        }
+    }
+    Add-Content -Path $envFile -Value ""
+    Add-Content -Path $envFile -Value "# Hermes Agent browser tools — use the system Chrome/Chromium/Edge binary."
+    Add-Content -Path $envFile -Value "AGENT_BROWSER_EXECUTABLE_PATH=$BrowserPath"
+    Write-Success "Configured browser tools to use $BrowserPath"
+}
+
+function Confirm-ChromiumDownload {
+    if ($Yes) { return $true }
+    if (-not [Environment]::UserInteractive) {
+        Write-Warn "Non-interactive shell — skipping Chromium prompt."
+        Write-Info "Re-run with -Yes to install Chromium (~400 MB download)."
+        return $false
+    }
+    $reply = Read-Host "Install Playwright Chromium (~400 MB download)? [y/N]"
+    return ($reply -match "^(y|yes)$")
+}
+
+function Ensure-Chromium {
+    if ($SkipChromium) {
+        Write-Info "Skipping Chromium install (-SkipChromium)"
+        return
+    }
+
+    # agent-browser on Windows expects a Playwright-managed Chromium under
+    # %LOCALAPPDATA%\ms-playwright. The system-browser shortcut from the
+    # Linux/macOS path doesn't apply the same way on Windows — Playwright's
+    # default launch path won't pick up a stock Chrome install without an
+    # explicit AGENT_BROWSER_EXECUTABLE_PATH. We still offer it as a
+    # fallback when the user doesn't want the download.
+
+    if (-not (Confirm-ChromiumDownload)) {
+        $sys = Find-SystemBrowser
+        if ($sys) {
+            Write-Info "Using system browser at $sys (Chromium download skipped)."
+            Write-BrowserEnv -BrowserPath $sys
+        } else {
+            Write-Info "Chromium install skipped. Browser tools won't launch until"
+            Write-Info "Chromium is installed or AGENT_BROWSER_EXECUTABLE_PATH is set."
+        }
+        return
+    }
+
+    $npxExe = Resolve-NpxExe
+    if (-not $npxExe) {
+        Write-Err "npx not on PATH — cannot install Playwright Chromium"
+        throw "npx missing"
+    }
+
+    Write-Info "Installing Playwright Chromium (~400 MB) ..."
+    & $npxExe --yes playwright install chromium
+    if ($LASTEXITCODE -ne 0) {
+        Write-Err "Playwright Chromium install failed (exit $LASTEXITCODE)"
+        Write-Info "Try again later: npx --yes playwright install chromium"
+        throw "playwright"
+    }
+    Write-Success "Playwright Chromium installed"
+}
+
+# ─────────────────────────────────────────────────────────────────────────
+# Main
+# ─────────────────────────────────────────────────────────────────────────
+
+Write-Info "Hermes Agent: bootstrapping browser tools"
+Write-Info "  HERMES_HOME = $HermesHome"
+Write-Info "  OS          = Windows"
+
+Ensure-Node
+Ensure-AgentBrowser
+Ensure-Chromium
+
+Write-Success "Browser tools setup complete."
+Write-Info "Hermes Agent will pick up agent-browser from $NodePrefix on next launch."