diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9510aee948..264287afe8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -37,6 +37,26 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Set OS-specific paths
+        run: |
+          if [ "${{ runner.os }}" = "Windows" ]; then
+            printf '%s\n' "OPENCODE_E2E_ROOT=${{ runner.temp }}\\opencode-e2e" >> "$GITHUB_ENV"
+            printf '%s\n' "OPENCODE_TEST_HOME=${{ runner.temp }}\\opencode-e2e\\home" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_DATA_HOME=${{ runner.temp }}\\opencode-e2e\\share" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_CACHE_HOME=${{ runner.temp }}\\opencode-e2e\\cache" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_CONFIG_HOME=${{ runner.temp }}\\opencode-e2e\\config" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_STATE_HOME=${{ runner.temp }}\\opencode-e2e\\state" >> "$GITHUB_ENV"
+            printf '%s\n' "MODELS_DEV_API_JSON=${{ github.workspace }}\\packages\\opencode\\test\\tool\\fixtures\\models-api.json" >> "$GITHUB_ENV"
+          else
+            printf '%s\n' "OPENCODE_E2E_ROOT=${{ runner.temp }}/opencode-e2e" >> "$GITHUB_ENV"
+            printf '%s\n' "OPENCODE_TEST_HOME=${{ runner.temp }}/opencode-e2e/home" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_DATA_HOME=${{ runner.temp }}/opencode-e2e/share" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_CACHE_HOME=${{ runner.temp }}/opencode-e2e/cache" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_CONFIG_HOME=${{ runner.temp }}/opencode-e2e/config" >> "$GITHUB_ENV"
+            printf '%s\n' "XDG_STATE_HOME=${{ runner.temp }}/opencode-e2e/state" >> "$GITHUB_ENV"
+            printf '%s\n' "MODELS_DEV_API_JSON=${{ github.workspace }}/packages/opencode/test/tool/fixtures/models-api.json" >> "$GITHUB_ENV"
+          fi
+
       - name: Setup Bun
         uses: ./.github/actions/setup-bun
 
@@ -48,36 +68,37 @@ jobs:
         working-directory: packages/opencode
         run: bun script/seed-e2e.ts
         env:
-          MODELS_DEV_API_JSON: ${{ github.workspace }}/packages/opencode/test/tool/fixtures/models-api.json
+          MODELS_DEV_API_JSON: ${{ env.MODELS_DEV_API_JSON }}
           OPENCODE_DISABLE_MODELS_FETCH: "true"
           OPENCODE_DISABLE_SHARE: "true"
           OPENCODE_DISABLE_LSP_DOWNLOAD: "true"
           OPENCODE_DISABLE_DEFAULT_PLUGINS: "true"
           OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER: "true"
-          OPENCODE_TEST_HOME: ${{ runner.temp }}/opencode-e2e/home
-          XDG_DATA_HOME: ${{ runner.temp }}/opencode-e2e/share
-          XDG_CACHE_HOME: ${{ runner.temp }}/opencode-e2e/cache
-          XDG_CONFIG_HOME: ${{ runner.temp }}/opencode-e2e/config
-          XDG_STATE_HOME: ${{ runner.temp }}/opencode-e2e/state
+          OPENCODE_TEST_HOME: ${{ env.OPENCODE_TEST_HOME }}
+          XDG_DATA_HOME: ${{ env.XDG_DATA_HOME }}
+          XDG_CACHE_HOME: ${{ env.XDG_CACHE_HOME }}
+          XDG_CONFIG_HOME: ${{ env.XDG_CONFIG_HOME }}
+          XDG_STATE_HOME: ${{ env.XDG_STATE_HOME }}
           OPENCODE_E2E_PROJECT_DIR: ${{ github.workspace }}
           OPENCODE_E2E_SESSION_TITLE: "E2E Session"
           OPENCODE_E2E_MESSAGE: "Seeded for UI e2e"
           OPENCODE_E2E_MODEL: "opencode/gpt-5-nano"
 
       - name: Run opencode server
-        run: bun run dev -- --print-logs --log-level WARN serve --port 4096 --hostname 0.0.0.0 &
+        working-directory: packages/opencode
+        run: bun dev -- --print-logs --log-level WARN serve --port 4096 --hostname 0.0.0.0 &
         env:
-          MODELS_DEV_API_JSON: ${{ github.workspace }}/packages/opencode/test/tool/fixtures/models-api.json
+          MODELS_DEV_API_JSON: ${{ env.MODELS_DEV_API_JSON }}
           OPENCODE_DISABLE_MODELS_FETCH: "true"
           OPENCODE_DISABLE_SHARE: "true"
           OPENCODE_DISABLE_LSP_DOWNLOAD: "true"
           OPENCODE_DISABLE_DEFAULT_PLUGINS: "true"
           OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER: "true"
-          OPENCODE_TEST_HOME: ${{ runner.temp }}/opencode-e2e/home
-          XDG_DATA_HOME: ${{ runner.temp }}/opencode-e2e/share
-          XDG_CACHE_HOME: ${{ runner.temp }}/opencode-e2e/cache
-          XDG_CONFIG_HOME: ${{ runner.temp }}/opencode-e2e/config
-          XDG_STATE_HOME: ${{ runner.temp }}/opencode-e2e/state
+          OPENCODE_TEST_HOME: ${{ env.OPENCODE_TEST_HOME }}
+          XDG_DATA_HOME: ${{ env.XDG_DATA_HOME }}
+          XDG_CACHE_HOME: ${{ env.XDG_CACHE_HOME }}
+          XDG_CONFIG_HOME: ${{ env.XDG_CONFIG_HOME }}
+          XDG_STATE_HOME: ${{ env.XDG_STATE_HOME }}
           OPENCODE_CLIENT: "app"
 
       - name: Wait for opencode server
@@ -93,17 +114,17 @@ jobs:
         run: ${{ matrix.settings.command }}
         env:
           CI: true
-          MODELS_DEV_API_JSON: ${{ github.workspace }}/packages/opencode/test/tool/fixtures/models-api.json
+          MODELS_DEV_API_JSON: ${{ env.MODELS_DEV_API_JSON }}
           OPENCODE_DISABLE_MODELS_FETCH: "true"
           OPENCODE_DISABLE_SHARE: "true"
           OPENCODE_DISABLE_LSP_DOWNLOAD: "true"
           OPENCODE_DISABLE_DEFAULT_PLUGINS: "true"
           OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER: "true"
-          OPENCODE_TEST_HOME: ${{ runner.temp }}/opencode-e2e/home
-          XDG_DATA_HOME: ${{ runner.temp }}/opencode-e2e/share
-          XDG_CACHE_HOME: ${{ runner.temp }}/opencode-e2e/cache
-          XDG_CONFIG_HOME: ${{ runner.temp }}/opencode-e2e/config
-          XDG_STATE_HOME: ${{ runner.temp }}/opencode-e2e/state
+          OPENCODE_TEST_HOME: ${{ env.OPENCODE_TEST_HOME }}
+          XDG_DATA_HOME: ${{ env.XDG_DATA_HOME }}
+          XDG_CACHE_HOME: ${{ env.XDG_CACHE_HOME }}
+          XDG_CONFIG_HOME: ${{ env.XDG_CONFIG_HOME }}
+          XDG_STATE_HOME: ${{ env.XDG_STATE_HOME }}
           PLAYWRIGHT_SERVER_HOST: "localhost"
           PLAYWRIGHT_SERVER_PORT: "4096"
           VITE_OPENCODE_SERVER_HOST: "localhost"