fix(ci): restore Windows smoke tests (reverted by #478)

PR #478 (worktree compatibility) accidentally reverted commit d1bd7ac
which changed Windows CI from full test suite to smoke tests only.

The full test suite times out on Windows due to slow filesystem I/O.
Linux runs comprehensive tests; Windows just verifies the binary works.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -51,10 +51,11 @@ jobs:
           file: ./coverage.out
           fail_ci_if_error: false
 
-  test-windows-cmd:
-    name: Test (Windows - cmd)
+  # Windows smoke tests only - full test suite times out (see bd-bmev)
+  # Linux runs comprehensive tests; Windows just verifies binary works
+  test-windows:
+    name: Test (Windows - smoke)
     runs-on: windows-latest
-    continue-on-error: true  # Windows filesystem is slow; don't block PRs
     steps:
       - uses: actions/checkout@v6
 
@@ -69,30 +70,22 @@ jobs:
           git config --global user.email "ci@beads.test"
 
       - name: Build
-        run: go build -v ./cmd/bd
+        run: go build -v -o bd.exe ./cmd/bd
 
-      - name: Test cmd package
-        run: go test -v -short -timeout=30m -parallel=4 ./cmd/...
+      - name: Smoke test - version
+        run: ./bd.exe version
 
-  test-windows-internal:
-    name: Test (Windows - internal)
-    runs-on: windows-latest
-    continue-on-error: true  # Windows filesystem is slow; don't block PRs
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Set up Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: '1.24'
-
-      - name: Configure Git
+      - name: Smoke test - init and CRUD
         run: |
-          git config --global user.name "CI Bot"
-          git config --global user.email "ci@beads.test"
-
-      - name: Test internal packages
-        run: go test -v -short -timeout=30m -parallel=4 ./internal/...
+          ./bd.exe init --quiet --prefix smoke
+          $output = ./bd.exe create --title "Windows smoke test" --type task
+          $id = ($output | Select-String -Pattern "smoke-\w+").Matches.Value
+          echo "Created issue: $id"
+          ./bd.exe list
+          ./bd.exe show $id
+          ./bd.exe update $id --status in_progress
+          ./bd.exe close $id
+          echo "All smoke tests passed!"
 
   lint:
     name: Lint