Revert "Gnome 49 adaptation"

[spitzerl]

Reverts #1

[Copilot]

Pull request overview

This PR reverts the prior “GNOME 49 adaptation” changes, restoring the extension’s earlier GNOME Shell window-management API usage and updating documentation to reflect a narrower support target.

Changes:

• Replace GNOME 49-specific window APIs/types (e.g., Mtk.Rectangle, maximize flag setters) with older equivalents (Meta.Rectangle, maximize()/unmaximize(), get_maximized() checks).
• Update README to state support is only for GNOME 45 and simplify installation instructions to the extensions.gnome.org link.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
src/extension.js	Reverts GNOME 49 adaptation API changes (rectangle type + maximize/restore + maximized state checks).
README.md	Narrows documented support to GNOME 45 and removes manual install steps in favor of the GNOME Extensions listing.

Comments suppressed due to low confidence (1)

src/extension.js:564

• The tile-preview rectangle type was switched back to Meta.Rectangle, but the extension metadata still declares support up to GNOME Shell 49. If GNOME 49 expects Mtk.Rectangle (as implied by the reverted adaptation), this will break the preview on 49. Either reintroduce a version/feature-detection shim for the rectangle type (supporting both Meta.Rectangle and Mtk.Rectangle) or update the advertised supported shell versions to match the APIs used.

        global.window_manager.emit("show-tile-preview",
            global.display.get_focus_window(), new Meta.Rectangle(
                { x: rx, y: ry, width: rw, height: rh }
            )
            , this._monitorId
        );

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