fix(hyprland/workspaces): adapt dispatch commands for Lua IPC protocol

[higorprado]

Hyprland 0.54 replaced the text-based dispatch socket protocol with a Lua-based one. Commands like "dispatch workspace 1" are now interpreted as invalid Lua (return hl.dispatch(workspace 1)), breaking workspace clicks and scroll navigation.

Add IPC::dispatch() that probes the running Hyprland on first call and routes commands through the new hl.dsp Lua API when the Lua protocol is detected, falling back to the old text format otherwise.

Affected dispatchers: workspace, focusworkspaceoncurrentmonitor, togglespecialworkspace

[zjeffer]

window.cpp and windowcount.cpp will also need this fix

[higorprado]

window.cpp and windowcount.cpp will also need this fix

@zjeffer thanks for the review! I've checked window.cpp and windowcount.cpp thoroughly — neither file has any getSocket1Reply("dispatch ...") calls. They only use getSocket1JsonReply() for queries like activeworkspace, clients, monitors, and workspaces. Could you clarify what specifically needs fixing there? Are the query calls (e.g., j/activeworkspace) also affected by the Lua protocol change, or is there something else I'm missing?

[zjeffer]

window.cpp and windowcount.cpp will also need this fix

@zjeffer thanks for the review! I've checked window.cpp and windowcount.cpp thoroughly — neither file has any getSocket1Reply("dispatch ...") calls. They only use getSocket1JsonReply() for queries like activeworkspace, clients, monitors, and workspaces. Could you clarify what specifically needs fixing there? Are the query calls (e.g., j/activeworkspace) also affected by the Lua protocol change, or is there something else I'm missing?

I misread, I thought they used getSocket1Reply. Nevermind.

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I just noticed we have tests in test/hyprland/backend.cpp, can you add tests for the new backend functions (where possible)?

[higorprado]

I just noticed we have tests in test/hyprland/backend.cpp, can you add tests for the new backend functions (where possible)?

@zjeffer done — added 7 unit tests for the new backend functions. Had to move buildLuaDispatch to public and isLuaProtocol + s_luaProtocolDetected_ to protected so IPCTestHelper could access them. Let me know if anything else needs changing.

[Akmadan23]

Hey @Alexays, since this fix is very important for hyprland users and addresses a breaking change, I was wondering if it would be possible to release v0.15.1, which would be really helpful. Thanks in advance