feat: add logic for move-everything-to-display feature

[Lukas-Klein]

Closes #314

Motivation

Moving an entire workspace from one display to another currently requires
relocating each window individually, which is tedious with many windows
open. This PR adds a move-everything command that does it all in one go.

Changes

• src/model/reactor.rs
  • Added a new MoveEverythingToDisplay { selector } variant to
    ReactorCommand
• src/actor/reactor/events/command.rs
  • Wired up the new command variant in the match handler
  • Implemented handle_command_reactor_move_everything_to_display which
    reuses the same guard logic as MoveWindowToDisplay (no-op during
    drag, inactive source/target space, source equals target) and then
    iterates over all windows in the active workspace, moving each one to
    the target display and centring it within the destination screen frame
• src/bin/rift-cli.rs
  • Added a MoveEverything subcommand under DisplayCommands accepting
    --direction, --index, and --uuid, matching the interface of the
    existing MoveWindow command

Usage

rift display move-everything --direction <left|right|up|down>
rift display move-everything --index <n>
rift display move-everything --uuid <uuid>

Tests done

No automated test suite. Manually verified that all windows on the active
workspace are relocated to the target display and their frames are
correctly clamped within the destination screen bounds.

[acsandmann]

implementation looks fine, i just am unsure about the naming. move-everything doesn't really sound right to me. need to think about it more..

[Lukas-Klein]

maybe move-all-windows?

[Swoorup]

Wouldn't the ability to assign specific workspaces to a particular display void the need for this?

[Lukas-Klein]

That it would, but I'm not sure if that's how @acsandmann is imagining rift to develop.

Because right now, each display has its own workspaces. Assigning specific workspaces to specific displays would completely eliminate that behaviour. I don't know if that's desired.

I would kind of like that, as I really liked this feature in Aerospace, but that's up to @acsandmann I guess.

[Swoorup]

just my 2c, if we have per display workspaces, a lot of existing commands would just naturally fit. As you don't need display specific commands.