Bug: `exporttags` with `--output-file-format json` outputs only appVersion, no tags

[felickz]

Describe the bug
The exporttags command with --output-file-format json produces a JSON file containing only the appVersion field. The actual tags are completely missing from the output. The text format works correctly.

To Reproduce
Steps to reproduce the behavior:

1. Run appinspector exporttags --output-file-format json --output-file-path .\tags.json
2. Open tags.json
3. Observe the file contains only:

   {
     "appVersion": "Microsoft Application Inspector 1.9.55+0b8c96ee0b"
   }

4. No tags are present in the output

Expected behavior
The JSON output should contain all exported tags in a structured format, equivalent to the text format output which correctly lists all tags.

Screenshots

Operating Environment (please complete the following information):

• Application Inspector Version: 1.9.55 (latest on NuGet as of Feb 2026)
• OS: Windows
• Browser: N/A
• Browser Version: N/A

Additional context
Using --output-file-format text works correctly as a workaround and outputs all tags:

appinspector exporttags --output-file-format text --output-file-path .\tags.txt

Installed via dotnet tool install -g Microsoft.CST.ApplicationInspector.CLI.