Use native AppKit table behavior

[lyc280705]

What changed

• Replace the custom table scroll-view rebalancer with the standard AppKit NSScrollView and NSTableView column sizing path.
• Keep the Name column pinned and flexible while allowing the remaining Finder-style columns to resize and reorder independently.
• Refresh saved column layouts, regression tests, build number, README links, and the release workflow default for 2.6.33.

Why

The custom layout compensation fought AppKit during divider drags, window resizing, and column reordering. Using NSTableColumn resizing masks plus NSTableView's native autoresizing policy matches Apple's documented table behavior and avoids rewriting neighboring column widths.

Validation

• CleanZip table behavior and archive round-trip tests pass.
• Window grow/shrink changes only the flexible Name column.
• Non-name dividers resize independently; non-name columns reorder; Name remains pinned.
• App and Finder service are universal x86_64 + arm64 binaries.
• App/service code signatures verify; PKG and ZIP checksums pass.
• Expanded release payloads contain no .DS_Store, __MACOSX, or AppleDouble metadata files.