Add comprehensive debugging for version passing between workflows

Added debug logging at every stage of version passing to identify
where the version parameter is being lost:

1. bump-version job: Verify agent_version output is set correctly
2. pypi-publish-agent prepare job: Show inputs.version and verify
   the get-version step output
3. pypi-reusable-publish: Already has debug showing empty version

Debug output will show:
- Event name and workflow trigger type
- Input version values at each stage
- Step output values
- Final version passed to reusable workflow

This will pinpoint exactly where the version parameter becomes empty
in the workflow_call chain.

Related: Previous debug showed "Expected version: " (empty)

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

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

.github/workflows/bump-version.yml

@@ -103,6 +103,12 @@ jobs:
           echo "Agent version: $VERSION"
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"
 
+      - name: Verify agent version output
+        if: ${{ inputs.service == 'cua-agent' || inputs.service == 'cua-computer' }}
+        run: |
+          echo "=== Bump Version Job Outputs ==="
+          echo "Agent version output: ${{ steps.agent_version.outputs.version }}"
+
       - name: Push changes
         run: |
           git push origin main --follow-tags

.github/workflows/pypi-publish-agent.yml

@@ -45,6 +45,12 @@ jobs:
       - name: Determine version
         id: get-version
         run: |
+          echo "=== Version Determination Debug ==="
+          echo "Event name: ${{ github.event_name }}"
+          echo "Input version: ${{ inputs.version }}"
+          echo "Workflow dispatch version: ${{ github.event.inputs.version }}"
+          echo "GitHub ref: ${{ github.ref }}"
+
           if [ "${{ github.event_name }}" == "push" ]; then
             # Extract version from tag (for package-specific tags)
             if [[ "${{ github.ref }}" =~ ^refs/tags/agent-v([0-9]+\.[0-9]+\.[0-9]+) ]]; then
@@ -60,6 +66,8 @@ jobs:
             # Use version from workflow_call
             VERSION=${{ inputs.version }}
           fi
+
+          echo "=== Final Version ==="
           echo "VERSION=$VERSION"
           echo "version=$VERSION" >> $GITHUB_OUTPUT
 
@@ -149,6 +157,14 @@ jobs:
           echo "Updated dependencies in pyproject.toml:"
           grep -E "cua-computer|cua-som|cua-core" pyproject.toml
 
+      - name: Verify prepare job outputs
+        run: |
+          echo "=== Prepare Job Outputs ==="
+          echo "Version output: ${{ steps.get-version.outputs.version }}"
+          echo "Computer version output: ${{ steps.update-deps.outputs.computer_version }}"
+          echo "SOM version output: ${{ steps.update-deps.outputs.som_version }}"
+          echo "Core version output: ${{ steps.update-deps.outputs.core_version }}"
+
   publish:
     needs: prepare
     uses: ./.github/workflows/pypi-reusable-publish.yml