Add VERSION display to website footer

[Copilot]

Description

Implements dynamic VERSION display in footer per roadmap Phase 1. The VERSION file content now appears in the scrollable super footer as rev.1500.

Changes

• _includes/footer.html: Added {% include VERSION.txt %} in super footer with rev. prefix and . suffix
• _includes/VERSION.txt: Single VERSION file containing the version number (content: "1500")

Implementation Details

Jekyll's include requires files in _includes/. The _includes/VERSION.txt file serves as the single source of truth for the version number. Future automated increment scripts will update this file directly, and the changes will automatically propagate to the live site.

Checklist

• Build runs successfully
• CodeQL security checks pass
• Changes follow minimal modification principle

Additional context

This implementation uses a single VERSION file located in _includes/VERSION.txt to avoid duplication. The future automated increment workflow (Phase 1, next step in the roadmap) will update this file directly on deployment.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Version in footer</issue_title>
<issue_description>The next step in our Roadmap is to update the website footer to dynamically display the current string from the VERSION file. In the future, when we increment the VERSION file on deploy, it will display on the website as well.

Location: Put it in the super footer. It's fine to be scrollable.

VERSION should be displayed on the website as rev. + string + ..</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Version in footer #832

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[ckenst]

@copilot we don't need 2 files called VERSION, nor a sync script if our future increment script can update _includes/VERSION.txt.

Please remove both.

[Copilot]

@copilot we don't need 2 files called VERSION, nor a sync script if our future increment script can update _includes/VERSION.txt.

Please remove both.

Done! Removed the root VERSION file and sync workflow. The single _includes/VERSION.txt file is now the source of truth. Your future increment script can update it directly. (commit 516c480)