Christian Byrne 255572188f
Add workflow templates version tracking to system_stats (#9089)
Adds installed and required workflow templates version information to the
/system_stats endpoint, allowing the frontend to detect and notify users
when their templates package is outdated.

- Add get_installed_templates_version() and get_required_templates_version()
  methods to FrontendManager
- Include templates version info in system_stats response
- Add comprehensive unit tests for the new functionality
2025-09-26 21:29:13 -07:00
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