debug: add tag validation debugging to identify release workflow issue

.github/workflows/release.yml

@@ -34,18 +34,29 @@ jobs:
       - name: Validate tag format
         id: version
         run: |
+          echo "Event name: ${{ github.event_name }}"
+          echo "GITHUB_REF: $GITHUB_REF"
+
           if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
             TAG_NAME="${{ github.event.inputs.tag }}"
+            echo "Using workflow_dispatch tag input"
           else
             TAG_NAME="${GITHUB_REF#refs/tags/}"
+            echo "Using GITHUB_REF tag extraction"
           fi
 
-          echo "Tag name: $TAG_NAME"
+          echo "Tag name: '$TAG_NAME'"
+          echo "Tag length: ${#TAG_NAME}"
+          echo "Tag (hex): $(echo -n "$TAG_NAME" | od -A n -t x1)"
+          echo "GITHUB_REF raw: '$GITHUB_REF'"
 
           # Validate semantic versioning format
           if [[ ! "$TAG_NAME" =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.-]+)?$ ]]; then
             echo "❌ Invalid tag format: $TAG_NAME"
             echo "Expected format: v1.2.3 or v1.2.3-beta.1"
+            echo "Testing regex match:"
+            echo "  Pattern: ^v[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.-]+)?\$"
+            echo "  Input: $TAG_NAME"
             exit 1
           fi