ci(release): wxs 用 env 绝对路径定位 IME DLL

之前 light.exe 失败的根因：openless-ime.wxs 的 Source 写的相对路径
src-tauri\target\windows-ime-msvc\... ，要从 openless-all/app/ 才能
resolve；但 Tauri 内置 wix bundler 的 candle/light cwd 是 src-tauri/，
路径错位，文件找不到 → light 失败。

本地 windows-package-msvc.ps1 通过 Repair-TauriMsiBundle 从 appRoot 手动
跑 light 兜底，CI 没有这个兜底所以挂掉。

修法：wxs Source 改用 $(env.OPENLESS_IME_DLL_X64) / _X86 绝对路径变量；
工作流的 IME build 步骤把绝对路径写到 $GITHUB_ENV。这样无论 candle/light
cwd 在哪，都能拿到正确的 DLL 路径。

本地脚本本就 set 这两个 env var（windows-package-msvc.ps1:213），改后
本地 + CI 共用同一条 absolute-path 路径，Repair fallback 不再必需。

.github/workflows/release-tauri.yml

@@ -188,8 +188,8 @@ jobs:
         run: bash scripts/build-mac.sh
 
       # ── Windows：先 build OpenLessIme.dll(x64+x86)，再跑 tauri bundle。
-      #    openless-ime.wxs 引用 src-tauri\target\windows-ime-msvc\{x64,x86}\Release\OpenLessIme.dll；
-      #    没有这一步 light.exe 链接 MSI 时找不到 DLL → 整个 Windows release 挂掉。
+      #    openless-ime.wxs 用 $(env.OPENLESS_IME_DLL_X64) / _X86 拿绝对路径，
+      #    跨 candle/light cwd 都能 resolve（Tauri wix bundler cwd 不固定）。
       - name: Build Windows IME native DLLs
         if: matrix.platform == 'windows-latest'
         shell: pwsh
@@ -197,8 +197,8 @@ jobs:
         run: |
           $appRoot = (Resolve-Path .).Path
           foreach ($t in @(
-            @{ Platform = 'x64';   Folder = 'x64' },
-            @{ Platform = 'Win32'; Folder = 'x86' }
+            @{ Platform = 'x64';   Folder = 'x64'; EnvName = 'OPENLESS_IME_DLL_X64' },
+            @{ Platform = 'Win32'; Folder = 'x86'; EnvName = 'OPENLESS_IME_DLL_X86' }
           )) {
             $out = Join-Path $appRoot "src-tauri\target\windows-ime-msvc\$($t.Folder)\Release"
             $obj = Join-Path $appRoot "src-tauri\target\windows-ime-msvc\obj\$($t.Folder)\Release"
@@ -206,11 +206,12 @@ jobs:
             if ($LASTEXITCODE -ne 0) {
               throw "OpenLessIme $($t.Platform) build failed with exit $LASTEXITCODE"
             }
-            $dll = Join-Path $out 'OpenLessIme.dll'
+            $dll = (Resolve-Path (Join-Path $out 'OpenLessIme.dll')).Path
             if (-not (Test-Path $dll)) {
               throw "OpenLessIme.dll not produced at $dll"
             }
-            Write-Host "[ok] built $dll"
+            "$($t.EnvName)=$dll" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
+            Write-Host "[ok] built $dll (exported $($t.EnvName))"
           }
 
       # ── Windows：仅 Windows 跑通用 tauri build（Linux 用下方专用 step，避免重复构建）──

openless-all/app/src-tauri/wix/openless-ime.wxs

@@ -5,12 +5,12 @@
       <Directory Id="OpenLessImeDirectory" Name="windows-ime">
         <Directory Id="OpenLessImeX64Directory" Name="x64">
           <Component Id="OpenLessImeDllX64Component" Guid="{B787DE6F-DF71-4D68-9DE8-04D3665A26F3}" Win64="yes">
-            <File Id="OpenLessImeDllX64" Name="OpenLessIme.dll" Source="src-tauri\target\windows-ime-msvc\x64\Release\OpenLessIme.dll" KeyPath="yes" />
+            <File Id="OpenLessImeDllX64" Name="OpenLessIme.dll" Source="$(env.OPENLESS_IME_DLL_X64)" KeyPath="yes" />
           </Component>
         </Directory>
         <Directory Id="OpenLessImeX86Directory" Name="x86">
           <Component Id="OpenLessImeDllX86Component" Guid="{A2E61B9A-4034-4ABF-A42F-964A9B1F08BB}" Win64="no">
-            <File Id="OpenLessImeDllX86" Name="OpenLessIme.dll" Source="src-tauri\target\windows-ime-msvc\x86\Release\OpenLessIme.dll" KeyPath="yes" />
+            <File Id="OpenLessImeDllX86" Name="OpenLessIme.dll" Source="$(env.OPENLESS_IME_DLL_X86)" KeyPath="yes" />
           </Component>
         </Directory>
       </Directory>