[patrik-bartak]

Problem

Numeric and alphabetic workspaces appear as one continuous group, making them harder to distinguish.

Changes

• Add an optional vertical divider between adjacent numeric and alphabetic workspace names: 1 2 3 │ A B C.
• Expose the toggle in workspace appearance settings and through workspace.groupDivider and workspaceDefaults.groupDivider.
• Keep it off by default, preserve workspace order, and classify original names independently of custom labels.
• Update the schema, guide, presentation example, and tests.

Testing

• Full Xcode build passed.
• Focused tests cover divider placement, inherited defaults, widget overrides, and schema consistency.
• Before/after screenshots are pending; the running developer bar and configuration were not changed.

Merging

Squash merge.

Implemented by GPT-6 via Codex.