qemu: scroll and home verbs in the driver

scroll X Y DY and home are judged by the channel's own ack, like nav and
wake: the deterministic stand-in for a swipe that only brings a control
into view (flare-edge #174), and the fresh-boot state a live panel needs
before each flow (flare-edge #173).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N3G6m9Aw5RyVY4ZowtKzEj

qemu/tests/qmp.py

@@ -26,6 +26,12 @@ warden_debug.c. The same channel is what tools/warden-ctl reaches over SSH on
 a real panel, so these verbs mean the same thing on the rig and on hardware:
 
     nav MENU[/TAB]         jump to a page; fails if the page is unknown
+    scroll X Y DY          scroll the scrollable under pixel X,Y by DY
+                           pixels (positive reveals content below), no
+                           animation: the deterministic stand-in for a
+                           swipe that only brings a control into view
+    home                   close every popup and go to Dashboard/Dashboard,
+                           the state a fresh boot starts in
     wake                   wake the UI as if touched, minus the swallow
                            (sleep.c dims and then blanks an idle panel and
                            eats the touch that ends either); every compiled
@@ -538,6 +544,16 @@ def drive(s, f, script_path, outdir, size, ctl_path=None, console_path=None, ref
             need_ctl(lineno, cmd)
             reply = ctl.send("wake")
             record(lineno, line, "ok" if reply == "wake: ok" else "fail", reply)
+        elif cmd in ("scroll", "home"):
+            # scroll X Y DY: the scrollable under the pixel moves DY pixels
+            # with no animation (warden_debug.c), the deterministic stand-in
+            # for a swipe whose only job was to bring a control into view.
+            # home: close every popup and return to Dashboard/Dashboard, the
+            # state a fresh boot starts in, so a live panel can run one flow
+            # after another. Both are judged by the channel's own ack.
+            need_ctl(lineno, cmd)
+            reply = ctl.send(line)
+            record(lineno, line, "ok" if reply.startswith(f"{cmd}: ok") else "fail", reply)
         elif cmd in ("page", "hit", "stats", "ctl"):
             # Query verbs: print the reply, never judge it. `ctl` is a raw
             # passthrough for anything the channel grows later.