Install straight from the repo with one piped command

Piped in via irm | iex there is no checkout next to the script, so the
installer now notices that and fetches the repository archive to %TEMP%
itself. README documents the one-liner, the download-and-run variant for
switches, and the clone path.

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

install.ps1

@@ -18,7 +18,33 @@ param(
 Set-StrictMode -Version 1.0
 $ErrorActionPreference = 'Stop'
 
-$src  = Split-Path -Parent $MyInvocation.MyCommand.Path
+$repoUrl = 'https://git.nebulm.com/smoido/claude-mode'
+
+# Running from a checkout, the source is the files next to this script. Piped
+# in (irm ... | iex) there is no script file and no checkout, so fetch the
+# repository archive and install from that instead.
+$src = $null
+if ($PSScriptRoot -and (Test-Path -LiteralPath (Join-Path $PSScriptRoot 'claude-mode.ps1'))) {
+    $src = $PSScriptRoot
+}
+else {
+    [Net.ServicePointManager]::SecurityProtocol =
+        [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
+    $tmp = Join-Path $env:TEMP ('claude-mode-src-' + [IO.Path]::GetRandomFileName().Replace('.', ''))
+    New-Item -ItemType Directory -Path $tmp -Force | Out-Null
+    $zip = Join-Path $tmp 'repo.zip'
+    Write-Host "no local checkout found - fetching source from $repoUrl" -ForegroundColor Cyan
+    Invoke-WebRequest -Uri "$repoUrl/archive/master.zip" -OutFile $zip -UseBasicParsing
+    Expand-Archive -LiteralPath $zip -DestinationPath $tmp
+    # Forgejo nests everything under a repo-named folder; find it wherever it is.
+    $extracted = Get-ChildItem -LiteralPath $tmp -Directory |
+        Where-Object { Test-Path -LiteralPath (Join-Path $_.FullName 'claude-mode.ps1') } |
+        Select-Object -First 1
+    if ($extracted) { $src = $extracted.FullName }
+    elseif (Test-Path -LiteralPath (Join-Path $tmp 'claude-mode.ps1')) { $src = $tmp }
+    else { throw 'archive did not contain claude-mode.ps1 - repo layout changed?' }
+}
+
 $root = Join-Path $env:USERPROFILE '.claude-mode'
 
 Write-Host "installing claude-mode -> $root" -ForegroundColor Cyan