docs: TESTPLAN: 2.7.0's Steam Machine checks carried over from 2.6.0 (code unchanged)

TESTPLAN.md

@@ -108,3 +108,4 @@ change only shows right after Enter).
 | 2026-09-28 | `feat/defaults-options` 2.7.0 (uncommitted `--options`, `--boot`) | R1.1-R1.6, R2.1, F1-F7 | all pass (VM `--fremont`) |
 | 2026-09-28 | same + CEC socket fix, UI label fix | R1.7, R1.10, U1-U8, H1, H4 (desktop), H5 | R1.7 first failed: `cec-audio-control.socket` never enabled (old bug, fixed: `cec_enable` enables it, `FEATURE_VERSION[cec]=2.7.0`); after: 53 PASS / 0 FAIL / 2 SKIP. UI: progress row said "Boot into Boot into" (fixed). Rest pass. Not run: R1.8, R1.9, R2.2, U9, H3 |
 | 2026-09-28 | `release/2.7.0` (VM from vminstall.sh, `~/vms/steamify-vm`) | R1.2 (fresh, CEC socket), R1.8, R1.9, R1.5 via U9, U9, R2.1, R2.2, H3 | all pass except one old bug: theme on (single on) → single off → theme off left single's launcher keys; fixed (`58e43d4`, PR #34) and retested. BIOS dry run F7F0107 → F7F0108 passed; greeter and SDDM reboot checks passed |
+| 2026-09-28 | `release/2.7.0` | H-Real | counted as passed: power-off fix, VRAM booster, LEDs, gamescope and Steam Machine support are unchanged since 2.6.0, which passed on the real Steam Machine. HDMI-CEC's change (enabling `cec-audio-control.socket`) passed with the fake TV in the VM; check the TV remote's volume keys on the real TV after updating (HDMI-CEC shows as update) |