feat: vmsuite.sh and the cli suite: G1-G3, F1-F7 of TESTPLAN.md as unattended checks

Each block in share/vmtest/<suite>/ starts from a fresh ssh-ready snapshot, gets a
Plasma session environment over ssh (the theme item needs one) and prints PASS/FAIL
lines. ONLY=<prefix> runs one block. 55 checks pass on the plain CachyOS VM.

share/vmtest/cli/30-f4-single-brings-conversion.sh

@@ -0,0 +1,6 @@
+# F4: --options theme,single,machine --boot desktop: single brings the conversion; the rest stays off.
+sf --defaults --options theme,single,machine --boot desktop >/dev/null; rc=$?
+[[ $rc -eq 0 ]] && pass "F4 exit 0" || fail "F4 exit $rc"
+expect_on gaming theme single machine
+expect_off poweroff cec glyphs launcher notify
+systemctl is-enabled steamify-boot-desktop.service >/dev/null 2>&1 && pass "F4 boot-desktop unit enabled" || fail "F4 boot-desktop unit not enabled"