rsnix v0.4.0: GUI input foundation — PS/2 mouse + scheduler message queues

Mouse (IRQ12, stream mode): ByteRing generalized for both PS/2 devices,
ISR routes data-port bytes by the controller's aux bit; mouse_init with
bounded-ACK handshake (boots without a mouse); packet decoder with
bit-3 resync, screen-relative deltas, buttons.  Exposed as /dev/mouse,
the `mouse` stream command, and `make test-mouse`.

Message queues (ADR 0003's GUI-era primitive): every task gets a static
16-slot TaskMsg ring; send/recv/recv_blocking with direct wake + tick
scan safety net for the lost-wakeup race; `msgrecv`/`send` commands,
`mouse <id>` routes real IRQ12 events into a task's queue, jobs shows
q=.  `make test-msg` + `make test-disk` regression pass.

1 files changed, 11 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 01e265a..f244251 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ export BOOT_EFI=$(ESP_DIR)/EFI/BOOT/BOOTX64.EFI
 # Create one with: make disk   (or: ./scripts/mkdisk.sh)
 export DISK_IMG ?= /tmp/disk.img
 
-.PHONY: all run run-gui clean image debug release fmt bootloader boot-image disk disk-fresh inspect test-disk
+.PHONY: all run run-gui clean image debug release fmt bootloader boot-image disk disk-fresh inspect test-disk test-mouse test-msg
 
 # ---- Build ---------------------------------------------------------------
 
@@ -113,6 +113,16 @@ inspect:
 test-disk:
         ./scripts/test-disk.sh
 
+# Automated PS/2 mouse round trip: boot -> inject mouse_move/mouse_button
+# via the monitor -> verify /dev/mouse + the `mouse` stream -> poweroff.
+test-mouse:
+        ./scripts/test-mouse.sh
+
+# Automated scheduler message-queue round trip: msgrecv/send, real-input
+# routing into a task's queue, queue-full boundary.
+test-msg:
+        ./scripts/test-msg.sh
+
 # ---- Full boot chain -----------------------------------------------------
 
 # Build bootloader only (rsboot submodule)