Restore layouts using windows from the current Space only

[olerida]

Problem

When two layouts in different macOS Spaces contain windows from the same app, restoring the second layout may select an Accessibility window from the first Space. Settle then moves/repositions that window there, leaving the current Space incomplete and preventing the second layout from becoming active.

Reproduction

1. Restore layout L in Space S; L contains a window from app A.
2. Switch to Space S2.
3. Restore layout L2; L2 also contains a window from app A.
4. Settle reuses the app A window from Space S instead of a window in S2.

Expected behavior

• Restore and reposition only app windows that belong to the current Space.
• Never reuse or move a window from another Space.
• If the app has no suitable window in the current Space, request a new window there when the app supports it.
• If a new window cannot be created, report it as unresolved without modifying windows in other Spaces.
• Support multiple required windows from the same app without reusing one window twice.

Validation

Test with two layouts in separate Spaces sharing at least one app, including an app that supports multiple windows. Confirm both layouts remain intact and are independently detected as active.

[olerida]

Implemented on codex/restore-current-space-windows for validation.

Current behavior:

• Reuses only windows correlated with the current Space.
• Uses the app's enabled Command-N Accessibility menu action to create each missing window, with a non-activating workspace fallback.
• Correlates AX and visible windows by CGWindowID when available, with a conservative unambiguous visual fallback.
• Reports unresolved app names instead of only a window count.
• Includes all five localizations.

Verification:

• Safari Command-N was exercised locally: a new standard Safari window was created in the current Space, its CGWindowID matched the visible window list, and the test window was closed afterward.
• 31 unit tests pass.
• Signed Release build 1.5.0 (8) builds and passes strict codesign verification.

Keep this issue open until the two-Space layout scenario is manually validated end to end.