Add debug logging to Mac Build artifact download steps

Investigating why artifact download succeeds but file is not found.
Adding ls -la after download to see actual directory contents.

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/mac_build.yml

@@ -191,6 +191,13 @@ jobs:
           name: signed-mac-app
           path: /tmp/eagle0/eagle0MAC
 
+      - name: Debug - List download directory
+        run: |
+          echo "=== Contents of /tmp/eagle0/eagle0MAC ==="
+          ls -la /tmp/eagle0/eagle0MAC || echo "Directory does not exist"
+          echo "=== Find any zip files ==="
+          find /tmp/eagle0 -name "*.zip" 2>/dev/null || echo "No zip files found"
+
       - name: Unzip signed app
         run: |
           cd /tmp/eagle0/eagle0MAC
@@ -239,6 +246,11 @@ jobs:
           name: notarized-mac-app
           path: /tmp/eagle0/eagle0MAC
 
+      - name: Debug - List download directory
+        run: |
+          echo "=== Contents of /tmp/eagle0/eagle0MAC ==="
+          ls -la /tmp/eagle0/eagle0MAC || echo "Directory does not exist"
+
       - name: Unzip notarized app
         run: |
           cd /tmp/eagle0/eagle0MAC