fix: ship terminal-init.js + transparent variant in MSI, guard Assets drift

The MSI shipped only terminal.html / xterm.js / xterm.css / xterm-addon-fit.js
even though terminal.html has loaded terminal-init.js since commit 75280b1 and
transparent sessions load terminal-transparent.html. Installed users therefore
got a blank terminal pane — portable ZIP users were unaffected because the ZIP
mirrors the whole publish output.

- WiX now lists terminal-init.js and terminal-transparent.html as components.
- A new CI step diffs src/CodeShellManager/Assets/ against the <File Source>
  refs in the WiX manifest and fails the build if they drift, so adding a new
  Asset file without updating WiX can't slip through again.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: AThraen

.github/workflows/build.yml

@@ -28,6 +28,27 @@ jobs:
         with:
           dotnet-version: '10.x'
 
+      # ── Guard: WiX must reference every file in src/CodeShellManager/Assets.
+      # Portable ZIP ships the whole publish output, so this only bites MSI users
+      # (e.g. v0.4.1 silently dropped terminal-init.js → blank terminals).
+      - name: Verify WiX manifest covers all Assets files
+        shell: pwsh
+        run: |
+          $assetFiles = (Get-ChildItem 'src/CodeShellManager/Assets' -File).Name | Sort-Object
+          $wxs = Get-Content 'installer/CodeShellManager.wxs' -Raw
+          $matches = [regex]::Matches($wxs, '\$\(var\.PublishDir\)\\Assets\\([^"]+)')
+          $wxsRefs = ($matches | ForEach-Object { $_.Groups[1].Value } | Sort-Object -Unique)
+          $diff = Compare-Object $assetFiles $wxsRefs
+          if ($diff) {
+            Write-Host "::error::installer/CodeShellManager.wxs is out of sync with src/CodeShellManager/Assets/"
+            $diff | ForEach-Object {
+              $side = if ($_.SideIndicator -eq '<=') { 'missing from WiX' } else { 'not present in Assets/' }
+              Write-Host "  $($_.InputObject) — $side"
+            }
+            exit 1
+          }
+          Write-Host "WiX/Assets in sync ($($assetFiles.Count) files)"
+
       # ── Build (every push / PR) ──────────────────────────────────────────────
       - name: Restore & Build
         run: dotnet build src/CodeShellManager/CodeShellManager.csproj -c Release

installer/CodeShellManager.wxs

@@ -54,10 +54,18 @@
         <File Source="$(var.PublishDir)\Assets\app.ico" KeyPath="yes" />
       </Component>
 
-      <!-- Assets — one component per file so auto-GUID works -->
+      <!-- Assets — one component per file so auto-GUID works.
+           If you add a new file to src/CodeShellManager/Assets, also add it here
+           or it will be missing from MSI installs (portable ZIP ships everything). -->
       <Component Directory="AssetsFolder" Guid="*">
         <File Source="$(var.PublishDir)\Assets\terminal.html" KeyPath="yes" />
       </Component>
+      <Component Directory="AssetsFolder" Guid="*">
+        <File Source="$(var.PublishDir)\Assets\terminal-transparent.html" KeyPath="yes" />
+      </Component>
+      <Component Directory="AssetsFolder" Guid="*">
+        <File Source="$(var.PublishDir)\Assets\terminal-init.js" KeyPath="yes" />
+      </Component>
       <Component Directory="AssetsFolder" Guid="*">
         <File Source="$(var.PublishDir)\Assets\xterm.js" KeyPath="yes" />
       </Component>