scripts: rebuild the dev loop around build.sh/run.sh

`make` did not parse at all (missing separator at line 139), so every
make target was dead.  The folder also carried three overlapping
launchers (boot.sh, qemu.sh, boot-image.sh) plus a fourth partial one
in the Makefile, `cargo build --package rsdos` copy-pasted eight times,
the QEMU invocation copy-pasted per script, and the test helpers
(fail/wait_log/wait_qemu_exit/qemu_hmp) duplicated in five tests.

New layout:
- scripts/lib.sh: single config (image, OVMF, mem/smp), the one cargo
  invocation (build_all), the one QEMU shape (qemu_args), and the test
  harness (test_boot, wait_log, wait_qemu_exit, qemu_hmp, sendkeys)
- scripts/build.sh: kernel + every bins/* in one pass
- scripts/mksystem.sh: freshness-aware image build that now stages
  every bins/*.efi into /bin/cli|gui (they were never copied before)
- scripts/run.sh: build + stage + boot in one command; --headless,
  --debug (GDB stub), --monitor (HMP socket), --fresh, --mem/--smp/
  --bios/--image; on Wayland it auto-selects XWayland plus
  grab-on-hover so the mouse can be captured (Ctrl+Alt+G toggles)
- scripts/tests/: the five automated tests on the shared harness
- deleted: boot.sh, qemu.sh, boot-image.sh, lib-boot-args.sh,
  build-image-release.sh, build-bootloader.sh (rsboot chain dropped)

The Makefile is now a thin wrapper: make run, make test, make system,
make inspect, make help.  Two-command flow: ./scripts/build.sh then
./scripts/run.sh (run.sh alone also works).

Stale test assumptions fixed so the suite is green again: test-gfx
waited for "gfx: check" while the shell prints "gfx check: PASS";
test-mouse/test-msg hardcoded msgrecv = task 3 (wm-input took slot 3 —
ids are parsed from the log now); the queue-full probe targeted task 0,
whose exec pump drains its own queue as completion codes (moved to the
cursor task, which never recvs).

Verified in QEMU: make test -> test-disk, test-gfx, test-mouse,
test-msg, test-fault all PASS.

1 files changed, 83 insertions, 0 deletions

diff --git a/scripts/tests/test-mouse.sh b/scripts/tests/test-mouse.sh
new file mode 100755
index 0000000..bb835be
--- /dev/null
+++ b/scripts/tests/test-mouse.sh
@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+#
+# scripts/tests/test-mouse.sh — automated PS/2 mouse round-trip test.
+#
+# Boots QEMU headless, injects mouse movement via the QEMU monitor,
+# verifies the on-screen cursor tracks it, and tests the mouse stream
+# routing command.
+#
+# Usage: ./scripts/tests/test-mouse.sh
+# Env:   SYSTEM_IMG, OVMF, QEMU (see scripts/lib.sh)
+#
+set -euo pipefail
+TNAME="mouse"
+# shellcheck source=../lib.sh
+source "$(dirname "$0")/../lib.sh"
+
+# cursor_state — one-shot `cursor` command, parsed to "x y buttons".
+cursor_state() {
+        sendkeys "cursor"
+        sleep 0.5
+        sed -n 's/.*cursor: x=\([0-9]*\) y=\([0-9]*\) buttons=\([A-Za-z-]*\).*/\1 \2 \3/p' "$LOG" | tail -1
+}
+
+echo "==> 1/6 build (kernel + bins)"
+build_all
+
+echo "==> 2/6 stage system image"
+stage_image --force
+
+echo "==> 3/6 boot QEMU (headless)"
+test_boot
+grep -aq "ps2: mouse ready" "$LOG" || fail "mouse driver did not come up at boot"
+wait_log "$LOG" "cursor: task " 10 || fail "cursor task did not spawn"
+
+echo "==> 4/6 cursor position tracks injected movement"
+INIT=$(cursor_state)
+[ -n "$INIT" ] || fail "no initial cursor position"
+IX=$(echo "$INIT" | awk '{print $1}')
+IY=$(echo "$INIT" | awk '{print $2}')
+IB=$(echo "$INIT" | awk '{print $3}')
+echo "    initial: x=$IX y=$IY buttons=$IB"
+[ "$IB" = "---" ] || fail "expected no buttons at boot, got $IB"
+
+qemu_hmp "mouse_move 20 7"
+S1=$(cursor_state)
+X1=$(echo "$S1" | awk '{print $1}')
+Y1=$(echo "$S1" | awk '{print $2}')
+[ "$X1" -eq $((IX + 20)) ] || fail "x did not move +20 (was $IX, now $X1)"
+[ "$Y1" -eq $((IY + 7)) ] || fail "y did not move +7 (was $IY, now $Y1)"
+echo "    moved:   x=$X1 y=$Y1 (delta +20,+7)"
+
+echo "==> 5/6 left button edge detection"
+qemu_hmp "mouse_button 1"
+S2=$(cursor_state)
+IB2=$(echo "$S2" | awk '{print $3}')
+[ "$IB2" = "L--" ] || fail "expected L--, got $IB2"
+
+qemu_hmp "mouse_button 0"
+S3=$(cursor_state)
+IB3=$(echo "$S3" | awk '{print $3}')
+[ "$IB3" = "---" ] || fail "expected --- after release, got $IB3"
+echo "    button:  $IB2 → $IB3"
+
+echo "==> 6/6 mouse stream routing to msgrecv's task"
+# The spawned task id shifts with the task table (wm-input took slot 3) —
+# parse it rather than hardcoding.
+sendkeys "msgrecv"
+sleep 1
+MID="$(sed -n 's/.*msgrecv: task \([0-9][0-9]*\) listening.*/\1/p' "$LOG" | tail -1)"
+[ -n "$MID" ] || fail "msgrecv did not spawn"
+echo "  msgrecv task id: $MID"
+sendkeys "mouse $MID"
+qemu_hmp "mouse_move 20 7"
+qemu_hmp "mouse_button 1"
+sleep 0.5
+qemu_hmp "mouse_button 0"
+sleep 0.5
+sendkeys "ctrl-c"
+sleep 0.5
+grep -aq "Mouse(+20,+7" "$LOG" || fail "routed mouse move not logged"
+
+echo ""
+echo "PASS — mouse round trip"