fix(runner): bootstrap self-hosted windows toolchain

Add a runner bootstrap workflow that works with Windows PowerShell before pwsh is installed.
Update the smoke test to avoid a hard pwsh dependency and point health checks at CAS-Workstation-Kim.
Extend Machinesetup.ps1 to install pwsh and dotnet alongside the existing base tools.

Author: root

.github/workflows/runner-bootstrap.yml

@@ -0,0 +1,53 @@
+name: Runner Bootstrap
+
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  bootstrap:
+    runs-on: [self-hosted, Windows]
+    timeout-minutes: 30
+    defaults:
+      run:
+        shell: powershell
+    steps:
+      - name: Checkout clean workspace
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        with:
+          clean: true
+          fetch-depth: 1
+
+      - name: Bootstrap runner toolchain
+        run: .\Machinesetup.ps1
+
+      - name: Validate core tools
+        run: |
+          $tools = @(
+            @{ Name = "git"; Command = "git"; Args = @("--version") },
+            @{ Name = "pwsh"; Command = "pwsh"; Args = @("--version") },
+            @{ Name = "python"; Command = "python"; Args = @("--version") },
+            @{ Name = "node"; Command = "node"; Args = @("--version") },
+            @{ Name = "npm"; Command = "npm"; Args = @("--version") },
+            @{ Name = "gh"; Command = "gh"; Args = @("--version") },
+            @{ Name = "dotnet"; Command = "dotnet"; Args = @("--version") }
+          )
+
+          $missing = @()
+          foreach ($tool in $tools) {
+            $command = Get-Command $tool.Command -ErrorAction SilentlyContinue
+            if (-not $command) {
+              Write-Host "[missing] $($tool.Name)"
+              $missing += $tool.Name
+              continue
+            }
+
+            Write-Host "[ok] $($tool.Name)"
+            & $command.Source @($tool.Args)
+          }
+
+          if ($missing.Count -gt 0) {
+            throw "Missing required tools after bootstrap: $($missing -join ', ')"
+          }

.github/workflows/runner-health.yml

@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 15
     env:
       GH_TOKEN: ${{ secrets.RUNNER_PAT || github.token }}
-      RUNNER_NAME: MyLocalPC
+      RUNNER_NAME: CAS-Workstation-Kim
       EMAIL_TO: ${{ secrets.EMAIL_TO }}
     steps:
       - name: Check runner status
@@ -76,9 +76,9 @@ jobs:
           server_port: ${{ env.SMTP_PORT }}
           username: ${{ env.SMTP_USERNAME }}
           password: ${{ env.SMTP_PASSWORD }}
-          subject: "Runner offline: MyLocalPC"
+          subject: "Runner offline: CAS-Workstation-Kim"
           body: |
-            Runner: MyLocalPC
+            Runner: CAS-Workstation-Kim
             Repo: ${{ github.repository }}
             Status: ${{ steps.status.outputs.runner_status }}
           to: ${{ env.EMAIL_TO }}

.github/workflows/runner-smoke-test.yml

@@ -12,18 +12,33 @@ jobs:
     timeout-minutes: 10
     defaults:
       run:
-        shell: pwsh
+        shell: powershell
     steps:
       - name: Runner basics
         run: |
           Write-Host "Runner name: $env:RUNNER_NAME"
           Write-Host "Runner OS: $env:RUNNER_OS"
           Write-Host "Runner arch: $env:RUNNER_ARCH"
+          Write-Host "Machine: $env:COMPUTERNAME"
           Write-Host "Repo: $env:GITHUB_REPOSITORY"
 
       - name: Tool versions
         run: |
-          git --version
-          python --version
-          node --version
-          gh --version
+          $tools = @(
+            @{ Name = "git"; Command = "git"; Args = @("--version") },
+            @{ Name = "pwsh"; Command = "pwsh"; Args = @("--version") },
+            @{ Name = "python"; Command = "python"; Args = @("--version") },
+            @{ Name = "node"; Command = "node"; Args = @("--version") },
+            @{ Name = "gh"; Command = "gh"; Args = @("--version") }
+          )
+
+          foreach ($tool in $tools) {
+            $command = Get-Command $tool.Command -ErrorAction SilentlyContinue
+            if (-not $command) {
+              Write-Host "[missing] $($tool.Name)"
+              continue
+            }
+
+            Write-Host "[ok] $($tool.Name)"
+            & $command.Source @($tool.Args)
+          }

Machinesetup.ps1

@@ -17,10 +17,12 @@ Write-Host ("winget: " + ($(if($hasWinget){"OK"}else{"MISSING"})))
 # Tools we want
 $want = @(
   @{name="git";    check="git";    winget="Git.Git"},
+  @{name="pwsh";   check="pwsh";   winget="Microsoft.PowerShell"},
   @{name="python"; check="python"; winget="Python.Python.3.12"},
   @{name="node";   check="node";   winget="OpenJS.NodeJS.LTS"},
   @{name="npm";    check="npm";    winget="OpenJS.NodeJS.LTS"},
-  @{name="gh";     check="gh";     winget="GitHub.cli"}
+  @{name="gh";     check="gh";     winget="GitHub.cli"},
+  @{name="dotnet"; check="dotnet"; winget="Microsoft.DotNet.SDK.10"}
 )
 
 # Install missing tools