Fix print null errors and add main process logging to renderer console

- Added null checks for toolbar, tab-bar, status-bar before accessing .style
- Prevents TypeError when elements don't exist
- Added executeJavaScript to send main process logs to renderer console
- Now we can see main process state in DevTools
- Print should now work without errors

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

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

.vs/ProjectSettings.json

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+}

.vs/VSWorkspaceState.json

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+  "PreviewInSolutionExplorer": false
+}

.vs/pan-converter/v17/DocumentLayout.backup.json

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.vs/pan-converter/v17/DocumentLayout.json

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+      "DocumentGroups": [
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+          "SelectedChildIndex": 0,
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+              "DocumentIndex": 0,
+              "Title": "package.json",
+              "DocumentMoniker": "H:\\Development\\pan-converter\\package.json",
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+              "RelativeToolTip": "package.json",
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+              "Icon": "ae27a6b0-e345-4288-96df-5eaf394ee369.001642|",
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+            {
+              "$type": "Bookmark",
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+            }
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+  ]
+}