add temporary test completions workflow

Author: mre

.github/workflows/test-completions.yml

@@ -0,0 +1,66 @@
+name: Test Completions Generation
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - add-shell-completions
+
+jobs:
+  test-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@stable
+
+      - name: Build binary
+        run: cargo build --release --features vendored-openssl
+
+      - name: Test completion generation
+        run: |
+          BIN="target/release/lychee"
+          chmod +x $BIN
+
+          # Test all completion types
+          echo "Testing Bash completion..."
+          $BIN --generate complete-bash > /tmp/lychee.bash
+
+          echo "Testing Elvish completion..."
+          $BIN --generate complete-elvish > /tmp/lychee.elv
+
+          echo "Testing Fish completion..."
+          $BIN --generate complete-fish > /tmp/lychee.fish
+
+          echo "Testing PowerShell completion..."
+          $BIN --generate complete-powershell > /tmp/_lychee.ps1
+
+          echo "Testing Zsh completion..."
+          $BIN --generate complete-zsh > /tmp/_lychee
+
+          # Verify files were created and are not empty
+          for file in /tmp/lychee.bash /tmp/lychee.elv /tmp/lychee.fish /tmp/_lychee.ps1 /tmp/_lychee; do
+            if [ ! -s "$file" ]; then
+              echo "Error: $file is empty or missing"
+              exit 1
+            fi
+            echo "✓ $(basename $file): $(wc -l < $file) lines"
+          done
+
+          echo "✅ All completions generated successfully!"
+
+  test-macos:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@stable
+
+      - name: Build and test completions
+        run: |
+          cargo build --release
+          BIN="target/release/lychee"
+
+          # Quick test
+          $BIN --generate complete-bash > /tmp/test.bash
+          $BIN --generate complete-fish > /tmp/test.fish
+          $BIN --generate complete-zsh > /tmp/test.zsh
+
+          echo "✅ macOS completions work!"