docs: TODO: first desktop login from the ISO install passed

TODO.md

@@ -4,9 +4,11 @@
 
 1. **Done (2026-09-27, `f42859a`):** a VM install from the ISO (Hello's
    Install, no manual fixes) ran Steamify's step: every component OK,
-   `exit: 0`, SDDM autologin into gamescope. Still to check: the first
-   desktop login (Vapor layout, single user's launcher, the app next to
-   Hello); in the VM switch the SDDM session to plasma first. The VM's text
+   `exit: 0`, SDDM autologin into gamescope. First desktop login (session switched to plasma in the VM) passed too:
+   Vapor layout, the app opened with everything on. The first-login script
+   runs the newest *release*, so it only works once 2.6.0 is released (in the
+   test it was pointed at the bundle).
+   The VM's text
    console doesn't show (virgl): read the installed disk with
    `qemu-nbd -r` + `mount -o ro,rescue=nologreplay,subvol=@` (logs in `@log`).
 2. **Rename the ISO** file/label to Steam Machine CachyOS (see Later).