Merge branch 'feature/vtop-fix' into feature/process-management

Implement a preemptive multitasking system for the Asuro kernel.

Context Switching & Scheduling:
- Custom IRQ0 ISR (contextswitcher.pas) with PUSHAD/POPAD ESP-swap
- Round-robin scheduler with priority-based quantum
- Process table using DList of PProcessContext pointers
- Idle process (PID 0) replaces kernel HLT loop

Process Lifecycle:
- create/kill/terminate/sendMessage API (processmanager.pas)
- Process states: Created, Running, Ready, Suspended, Awaiting,
  Finished, Error
- Parent-child tracking (ParentID, smChildExited notification on reap)
- proc_yield, proc_sleep_ms, proc_await, proc_suspend, proc_exit

Resource Binding & Cleanup:
- Per-process resource list
  (bindResource/unbindResource/unbindAllResources)
- TCP sockets auto-bound to owning process (OwnerPID on TTCPSocket)
- socket_cleanup + auto-unbind in DestroySocket

VTerminal Refactor:
- Multi-instance design (heap-allocated TVTermState per terminal)
- Foreground process with incremental stdout/stderr drain via LVGL timer
- Ctrl+C kills foreground process (killForeground)
- Per-terminal CWD, dir stack, FS builtins (CD/LS/PUSHD/POPD)
- Background job support (& suffix, JOBS/FG commands)
- Command history (Up/Down arrow)

Command Consolidation:
- 14 commands extracted from 9 units into centralized progmanager.pas
- Command procedures exported in host unit interfaces
- E1000/TRACER/stdio builtins kept in-place (conditional/circular)

New Units:
- src/include/proctypes.pas — process type definitions
- src/processmanager.pas — core process manager
- src/prog/ping.pas — standalone ICMP ping process
- src/prog/testcmd.pas — test command (proc_sleep_ms demo)
- src/testprocs.pas — process subsystem smoke tests

Misc:
- ICMP callbacks gain userData parameter for concurrency-safe ping
- CLI/STI guards on kalloc/kfree (lmemorymanager.pas)
- LV_KEY_CTRLC constant + Ctrl+C interception in LVGL keyboard hook
- Window owner PID tracking (windows.pas)
- ISR_32 gate override support (isrmanager.pas)

compile_lvgl.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 # compile_lvgl.sh — Download LVGL v9.2 source and compile into lib/liblvgl.a
 # Clone & compile in /tmp (fast container-local fs).
-# Cache liblvgl.a on host mount (/code/lvgl/) to skip rebuild.
+# Copy source + objects to /lvgl (host mount) for debugging.
 set -e
 
 LVGL_VERSION="v9.2.2"
@@ -10,7 +10,6 @@ LVGL_DIR="/tmp/lvgl"
 OBJ_DIR="/tmp/lvgl_obj"
 CONF_DIR="$(pwd)/lvglh"
 OUT_DIR="$(pwd)/lib"
-CACHE_DIR="/code/lvgl"
 
 CC="gcc"
 CFLAGS="-m32 -march=i686 -ffreestanding \
@@ -27,17 +26,6 @@ echo " "
 echo "Compiling LVGL..."
 echo " "
 
-# If cached liblvgl.a exists on host mount, just copy it and skip everything
-if [ -f "${CACHE_DIR}/liblvgl.a" ]; then
-    echo "Found cached liblvgl.a in ${CACHE_DIR}, copying to ${OUT_DIR}..."
-    cp "${CACHE_DIR}/liblvgl.a" "${OUT_DIR}/liblvgl.a"
-    echo "(Delete lvgl/liblvgl.a to force a full rebuild.)"
-    echo " "
-    echo "LVGL compilation complete (cached)."
-    echo " "
-    exit 0
-fi
-
 # Clone LVGL into /tmp (container-local)
 rm -rf "$LVGL_DIR"
 echo "Downloading LVGL ${LVGL_VERSION}..."
@@ -117,14 +105,12 @@ else
     echo "No custom LVGL files in lvglh/."
 fi
 
-# Cache liblvgl.a and source to host mount for next build
+# Copy source + objects to /lvgl host mount for debugging
-echo "Caching LVGL to host mount..."
+echo "Copying LVGL source and objects to host mount..."
-mkdir -p "$CACHE_DIR"
+mkdir /code/lvgl 2>/dev/null || true
-rm -rf ${CACHE_DIR}/* ${CACHE_DIR}/.[!.]* ${CACHE_DIR}/..?* 2>/dev/null || true
+rm -rf /code/lvgl/* /code/lvgl/.[!.]* /code/lvgl/..?* 2>/dev/null || true
-cp "${OUT_DIR}/liblvgl.a" "${CACHE_DIR}/liblvgl.a"
+cp -a "$LVGL_DIR/src" /code/lvgl/src
-cp -a "$LVGL_DIR/src" "${CACHE_DIR}/src"
+cp -a "$OBJ_DIR" /code/lvgl/obj
-cp -a "$LVGL_DIR"/*.h "${CACHE_DIR}/" 2>/dev/null || true
-cp -a "$OBJ_DIR" "${CACHE_DIR}/obj"
 echo "Done."
 
 echo " "

compile_sources.sh

@@ -4,4 +4,4 @@ echo "======================="
 echo " "
 echo "Compiling FPC Sources..."
 echo " "
-fpc -Aelf -gw -g -gl -n -v0ew -O3 -OpPENTIUM3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ -Fusrc/* -Fusrc/include/* -Fusrc/driver/* -Fusrc/driver/net/* -Fusrc/driver/bus/* -Fusrc/driver/bus/usb/* -Fusrc/driver/hid/* src/kernel.pas
+fpc -Aelf -gw -g -gl -n -v0ew -O3 -OpPENTIUM3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ -Fusrc/* -Fusrc/driver/* -Fusrc/driver/net/* -Fusrc/driver/bus/* -Fusrc/driver/bus/usb/* -Fusrc/driver/hid/* src/kernel.pas

src/contextswitcher.pas

@@ -29,11 +29,14 @@ unit contextswitcher;
 interface
 
 uses
-    idt, isrmanager, processmanager, proctypes, util, tracer;
+    idt, isrmanager, processmanager, proctypes, util, syslog, tracer;
 
 { Initialise: overwrite IDT gate 32 with our custom ISR. }
 procedure init;
 
+{ No idle ESP variable needed — idle is now a formal process (PID 0)
+  with its SavedESP managed like any other process. }
+
 implementation
 
 { -----------------------------------------------------------------------

src/driver/bus/usb/usbcore.pas

@@ -957,14 +957,11 @@ end;
 procedure usb_check_hotplug;
 var
     i    : uint32;
-    count: uint32;
     hc   : PUSBHCDriver;
     port : uint8;
 begin
     if HCList = nil then exit;
-    count := LL_Size(HCList);
+    for i := 0 to LL_Size(HCList) - 1 do begin
-    if count = 0 then exit;
-    for i := 0 to count - 1 do begin
         hc := PUSBHCDriver(LL_Get(HCList, i));
         if (hc <> nil) and hc^.PortChangePending then begin
             hc^.PortChangePending := false;

src/driver/hid/ps2/ps2_mouse.pas

@@ -119,12 +119,8 @@ var
     x32, y32 : sint32;
     r : pchar;
 begin
-    { mouse_wait(0) checks OBF with a short timeout (100 iterations).
-      When it returns true, data is ready — read it directly with inb($60).
-      Do NOT call mouse_read here: it uses mouse_wait_long (100k iterations)
-      and would spin-block the ISR if the next packet byte hasn't arrived yet. }
     while mouse_wait(0) do begin
-        b := inb($60);
+        b := mouse_read;
         if Cycle = 0 then begin
             if (b AND $08) = $08 then begin
                 Mouse_Byte[Cycle] := b;

src/driver/timers/TMR_0_ISR.pas

@@ -13,7 +13,7 @@
 //  limitations under the License.
 
 { 
-	Driver->Timer->TMR_0_ISR - 8khz Timer Driver.
+	Driver->Timer->TMR_0_ISR - 1024hz Timer Driver.
 	
 	@author(Kieron Morris <[email protected]>)
 }
@@ -37,7 +37,7 @@ var
     Hooks : Array[1..MAX_HOOKS] of pp_hook_method;
     Registered : boolean = false;
 
-procedure Main; //IRQ0, ~8001hz
+procedure Main; //IRQ0, 1024.19hz aprox
 var
     i : integer;
 
@@ -54,7 +54,7 @@ procedure register();
 begin
     if not registered then begin
         asm
-            mov ax, 149
+            mov ax, 1193
             out $40, al
             mov al, ah
             out $40, al

src/driver/timers/graphicsrefresh.pas

@@ -0,0 +1,54 @@
+{
+    Driver->Timer->GraphicsRefresh - Timer-driven graphics refresh at ~120FPS.
+
+    Hooks into the 1024Hz timer (TMR_0_ISR) and calls the desktop, uidebug,
+    LVGL and video flush routines every ~9 ticks (1024/9 ≈ 113.8 FPS).
+
+    @author(Kieron Morris <[email protected]>)
+}
+unit graphicsrefresh;
+
+interface
+
+procedure init;
+
+implementation
+
+uses
+    util,
+    TMR_0_ISR,
+    desktop,
+    uidebug,
+    lvgl,
+    video,
+    windows,
+    syslog;
+
+const
+    { 1024 / 4 ≈ 256 FPS }
+    TICKS_PER_FRAME = 4;
+
+var
+    TickCounter : uint32;
+
+procedure on_tick(data : void);
+begin
+    TickCounter := TickCounter + 1;
+    if TickCounter >= TICKS_PER_FRAME then begin
+        TickCounter := 0;
+        windows.reapOrphanedWindows;
+        desktop.update;
+        uidebug.update;
+        lvgl_handler;
+        video.Flush;
+    end;
+end;
+
+procedure init;
+begin
+    TickCounter := 0;
+    TMR_0_ISR.hook(uint32(@on_tick));
+    syslog.logln('GFXREFRESH', 'Hooked into 1024Hz timer (~120 FPS).');
+end;
+
+end.

src/driver/timers/usbhotplug.pas

@@ -0,0 +1,46 @@
+{
+    Driver->Timer->USBHotplug - Timer-driven USB hotplug polling at ~1Hz.
+
+    Hooks into the 1024Hz timer (TMR_0_ISR) and calls
+    usbcore.usb_check_hotplug every 1024 ticks (approximately once per second).
+
+    @author(Kieron Morris <[email protected]>)
+}
+unit usbhotplug;
+
+interface
+
+procedure init;
+
+implementation
+
+uses
+    util,
+    TMR_0_ISR,
+    usbcore,
+    syslog;
+
+const
+    { 1024 ticks at 1024Hz ≈ 1 second }
+    TICKS_PER_POLL = 1024;
+
+var
+    TickCounter : uint32;
+
+procedure on_tick(data : void);
+begin
+    TickCounter := TickCounter + 1;
+    if TickCounter >= TICKS_PER_POLL then begin
+        TickCounter := 0;
+        usbcore.usb_check_hotplug;
+    end;
+end;
+
+procedure init;
+begin
+    TickCounter := 0;
+    TMR_0_ISR.hook(uint32(@on_tick));
+    syslog.logln('USBHOTPLUG', 'Hooked into 1024Hz timer (~1Hz polling).');
+end;
+
+end.

src/driver/video/uidebug.pas

@@ -365,7 +365,7 @@ begin
     now_tick := lvgl_get_ticks;
 
     if (now_tick - last_tick) >= FPS_INTERVAL then begin
-        current_fps := safeDiv32(frame_count * 8000, now_tick - last_tick);
+        current_fps := safeDiv32(frame_count * 1000, now_tick - last_tick);
         frame_count := 0;
         last_tick := now_tick;
 

src/include/proctypes.pas

@@ -18,7 +18,7 @@ const
     PROCESS_STACK_SIZE = 8192;
 
     { Base quantum multiplier: quantum = Priority * BASE_QUANTUM ticks }
-    BASE_QUANTUM = 5;
+    BASE_QUANTUM = 8;
 
 type
     { Forward declaration }