Archive GHES feature matrix for pre-2024 releases

[Copilot]

Archive old GHES feature matrix and simplify current matrix

• Create archive directory /advanced-security/archive/
• Copy current feature matrix to archive as GHAS-on-GHES-feature-matrix-2025.md
• Update main feature matrix to remove versions before 2024 (3.4-3.11)
• Remove fully released feature rows from main matrix (rows with all ✅ in remaining columns)
• Fix column alignment issues and update partner pattern count
• Verify changes look correct

Summary

Successfully archived the old GHES feature matrix and simplified the current view:

Changes made:

1. Created archive at /advanced-security/archive/GHAS-on-GHES-feature-matrix-2025.md with full historical data
2. Updated main matrix to show only versions 3.12-3.18 (2024+)
3. Removed 84 fully-released feature rows that had all ✅ across remaining versions
4. Fixed column alignment - all tables now correctly show data for versions 3.12-3.18
5. Updated partner pattern count for 3.18 to 347 (was 321 in archive)
6. Reduced file size from 256 lines to 166 lines (35% reduction)

Versions removed: 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11
Versions kept: 3.12, 3.13, 3.14, 3.15, 3.16, 3.17, 3.18

The updated matrix is now more focused and easier to read, showing only features that are:

• Available in supported GHES versions (2024+)
• Not yet fully released (have at least one cell that isn't ✅)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Archive old GHES feature matrix</issue_title>
<issue_description>The current view of a matrix for every version of GHES is too large.

1. Create an archive of the current matrix under /advanced-security/archive/GHAS-on-GHES-feature-matrix-2025.md
2. update the GHAS-on-GHES-feature-matrix.md to remove any release before 2024 (current year -1)

• Remove any columns for from the matrix for those releases
• Remove any rows from the matrix for those features which are fully released (every cell in that feature row has a ✅ )
  </issue_description>

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

• Fixes Archive old GHES feature matrix #54

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[felickz]

@copilot Many rows in the new matrix are missing a value for the 3.18 column

The ONLY one that should be in that scenario is: Dependabot alerts show vulnerable function calls (this feature was removed in 3.17 - so 2 empty cells )

Compare 3.18 in the 2025 snapshot to the new matrix to see the proper values

ex attached of missing values.

Also, secret partner pattern count for 3.18 is 347

[Copilot]

@copilot Many rows in the new matrix are missing a value for the 3.18 column

The ONLY one that should be in that scenario is: Dependabot alerts show vulnerable function calls (this feature was remov...

Fixed in commit 4a479fa. All tables now correctly show only versions 3.12-3.18 with proper column alignment. Partner pattern count for 3.18 updated to 347. The "Dependabot alerts show vulnerable function calls" row correctly shows empty cells for 3.17 and 3.18 as this feature was removed.