image: single dd-able system.img replaces vvfat+data-disk pair

mksystem.sh stages one FAT32 image: \bzImage + \initramfs.cpio.gz
(rsbl paths), \EFI\BOOT\BOOTX64.EFI (kernel direct by default,
--chain for rsboot), \etc\motd.txt, empty \bin\cli + \bin\gui,
seed files at the root.  --gpt wraps it in a partition table for real
USB dd targets.

Makefile: run/run-gui/debug attach only system.img on ide.0 (vvfat
lines deleted); stamp-based 'system' target rebuilds only when the
kernel is newer, so runtime writes survive reboots; system-fresh
wipes; inspect lists via mtools.  build-image.sh/mkdisk.sh removed.

test-disk.sh boots system.img with a throwaway OVMF varstore — a
stale NvVars makes the firmware skip the \EFI\BOOT fallback.
sendkeys.py pacing 50ms->250ms/1.5s: keystroke loss under host load
corrupted typed lines (guest-side PS/2 ring overflow).

Gate: test-disk PASS (fsck clean, file survives poweroff).

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/sendkeys.py b/scripts/sendkeys.py
index 1c97b33..a67903d 100755
--- a/scripts/sendkeys.py
+++ b/scripts/sendkeys.py
@@ -72,9 +72,9 @@ def type_line(sock, line):
         else:
             sys.stderr.write("warning: no sendkey mapping for %r\n" % ch)
             continue
-        time.sleep(0.05)
+        time.sleep(0.25)
     sendkey(sock, "ret")
-    time.sleep(0.7)
+    time.sleep(1.5)
 
 
 def main():