ci(main): bundle Classic test resources

Fetch ccccxp/LeagueSkins main with a shallow sparse checkout limited to classic/ and resources/. Package those files beside the Rose portable payload instead of mixing external assets into the application directory.

Add a bilingual test README with the exact Windows copy destinations and safeguards against creating nested classic/classic paths. Record the LeagueSkins repository, branch, and resolved commit in every archive.

Validation:
- Parsed the workflow as YAML.
- Verified a sparse checkout at LeagueSkins 2cc2808c contains 1,526 Classic archives and 21 language mapping files.
- Verified the README names both %LOCALAPPDATA%\Rose destinations.
- git diff --check passed.

Review notes:
- Regular skins are intentionally excluded from this test artifact.
- Classic resources remain separate from the Rose executable payload and require manual merge/overwrite.
- The workflow still produces a portable ZIP only; no installer is generated.

Author: ccccxp

.github/workflows/main-portable.yml

@@ -27,6 +27,12 @@ jobs:
       - name: Check out main
         uses: actions/checkout@v5
 
+      - name: Fetch Classic test resources
+        shell: pwsh
+        run: |
+          git clone --branch main --single-branch --depth 1 --filter=blob:none --sparse https://github.com/ccccxp/LeagueSkins.git _resources/LeagueSkins
+          git -C _resources/LeagueSkins sparse-checkout set classic resources
+
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
@@ -44,9 +50,22 @@ jobs:
         shell: pwsh
         run: |
           $payload = "dist/Rose"
+          $resourceRepo = "_resources/LeagueSkins"
+          $classicSource = "$resourceRepo/classic"
+          $mappingSource = "$resourceRepo/resources"
+          $readme = "packaging/README-CLASSIC-TESTING.txt"
           if (-not (Test-Path "$payload/Rose.exe" -PathType Leaf)) {
             throw "Rose.exe was not produced"
           }
+          if (-not (Get-ChildItem $classicSource -Recurse -Filter *.fantome -File | Select-Object -First 1)) {
+            throw "LeagueSkins Classic archives were not fetched"
+          }
+          if (-not (Test-Path "$mappingSource/default/skin_ids.json" -PathType Leaf)) {
+            throw "LeagueSkins shared skin mappings were not fetched"
+          }
+          if (-not (Test-Path $readme -PathType Leaf)) {
+            throw "Classic testing README was not found"
+          }
 
           $pluginRoot = @(
             "$payload/_internal/Pengu Loader/plugins",
@@ -78,10 +97,32 @@ jobs:
             }
           }
 
-          New-Item -ItemType Directory -Force -Path artifacts | Out-Null
+          $bundle = "bundle"
+          New-Item -ItemType Directory -Force -Path `
+            artifacts, `
+            "$bundle/Rose", `
+            "$bundle/Classic-Resources/classic", `
+            "$bundle/Classic-Resources/resources" | Out-Null
+          Copy-Item "$payload/*" "$bundle/Rose" -Recurse -Force
+          Copy-Item "$classicSource/*" "$bundle/Classic-Resources/classic" -Recurse -Force
+          Copy-Item "$mappingSource/*" "$bundle/Classic-Resources/resources" -Recurse -Force
+          Copy-Item $readme "$bundle/README-CLASSIC-TESTING.txt" -Force
+
+          $resourceSha = (git -C $resourceRepo rev-parse HEAD).Trim()
+          $sourceNote = @(
+            "Classic resource repository: https://github.com/ccccxp/LeagueSkins",
+            "Branch: main",
+            "Commit: $resourceSha"
+          ) -join "`n"
+          [IO.File]::WriteAllText(
+            "$bundle/Classic-Resources/RESOURCE-SOURCE.txt",
+            "$sourceNote`n",
+            [Text.UTF8Encoding]::new($false)
+          )
+
           $shortSha = "${{ github.sha }}".Substring(0, 8)
-          $archive = "artifacts/Rose-main-portable-$shortSha.zip"
-          Compress-Archive -Path $payload -DestinationPath $archive -CompressionLevel Optimal
+          $archive = "artifacts/Rose-main-classic-test-$shortSha.zip"
+          Compress-Archive -Path "$bundle/*" -DestinationPath $archive -CompressionLevel Optimal
           $hash = (Get-FileHash $archive -Algorithm SHA256).Hash.ToLowerInvariant()
           $checksum = "$hash  $([IO.Path]::GetFileName($archive))`n"
           [IO.File]::WriteAllText(
@@ -93,7 +134,7 @@ jobs:
       - name: Upload portable artifact
         uses: actions/upload-artifact@v6
         with:
-          name: Rose-main-portable-${{ github.run_number }}
+          name: Rose-main-classic-test-${{ github.run_number }}
           path: |
             artifacts/*.zip
             artifacts/*.sha256

packaging/README-CLASSIC-TESTING.txt

@@ -0,0 +1,42 @@
+Rose Classic Test Package / Rose Classic 测试包
+================================================
+
+中文说明
+--------
+
+此压缩包是便携式测试包，不包含安装器。
+
+1. 完全退出 Rose。
+2. 按 Win+R，输入 %LOCALAPPDATA%\Rose，然后按 Enter。
+3. 建议先备份该目录中现有的 classic 和 resources 文件夹。
+4. 将 Classic-Resources\classic 内的全部内容复制到
+   %LOCALAPPDATA%\Rose\classic，并在提示时选择合并和覆盖文件。
+5. 将 Classic-Resources\resources 内的全部内容复制到
+   %LOCALAPPDATA%\Rose\resources，并在提示时选择合并和覆盖文件。
+6. 从 Rose\Rose.exe 启动测试版本。
+
+请勿把整个 Classic-Resources 文件夹放进 Rose 数据目录，也不要产生
+%LOCALAPPDATA%\Rose\classic\classic 这样的重复目录层级。
+
+Classic-Resources\RESOURCE-SOURCE.txt 记录了本次打包使用的 LeagueSkins
+仓库地址、分支和精确提交。
+
+English instructions
+--------------------
+
+This is a portable test package. It does not contain an installer.
+
+1. Exit Rose completely.
+2. Press Win+R, enter %LOCALAPPDATA%\Rose, and press Enter.
+3. Back up the existing classic and resources folders first.
+4. Copy everything inside Classic-Resources\classic to
+   %LOCALAPPDATA%\Rose\classic. Merge folders and replace files when prompted.
+5. Copy everything inside Classic-Resources\resources to
+   %LOCALAPPDATA%\Rose\resources. Merge folders and replace files when prompted.
+6. Start the test build from Rose\Rose.exe.
+
+Do not copy the whole Classic-Resources folder into the Rose data directory,
+and do not create a nested %LOCALAPPDATA%\Rose\classic\classic directory.
+
+Classic-Resources\RESOURCE-SOURCE.txt records the LeagueSkins repository,
+branch, and exact commit used by this package.