Add KWin Wayland session instructions to Waydroid-only sessions documentation

[Githubguy132010]

Fixes #52

Add instructions for KWin Wayland to the Waydroid-only session documentation.

• Add a new section for KWin Wayland in faq/setting-up-waydroid-only-sessions.md.
• Include instructions for creating /usr/bin/kwin-waydroid.sh.
• Include instructions for creating /usr/share/wayland-sessions/kwin.desktop.

---

For more details, open the Copilot Workspace session.

[aleasto]

Why is this not kwin_wayland --exit-with-session waydroid session start?

[Githubguy132010]

Good point @aleasto. Let me fix that.

[Githubguy132010]

Shouldn't it be kwin_wayland --exit-with-session && waydroid session start?

[aleasto]

Shouldn't it be kwin_wayland --exit-with-session && waydroid session start?

No. Perhaps it needs quotes: kwin_wayland --exit-with-session "waydroid session start"

[Githubguy132010]

Alright. I'm testing it.

[aleasto]

Pardon, waydroid show-full-ui, not waydroid session start.

And now you don't need a separate script because it's a one-liner.

[Githubguy132010]

Ok, 1 sec.

[Githubguy132010]

I think we need to run waydroid session start first and then run waydroid show-full-ui

[Githubguy132010]

Good idea?

[aleasto]

No

[Githubguy132010]

Why not?

[Githubguy132010]

All I get is a black screen with a cursor.

[aleasto]

You typed waydroid-show-full-ui instead of waydroid show-full-ui

[Githubguy132010]

Good point.

[Githubguy132010]

Fixed

[Githubguy132010]

I still have a black screen. Great.